CN114142724B - Power supply system, voltage setting device, voltage setting method and communication system - Google Patents
Power supply system, voltage setting device, voltage setting method and communication system Download PDFInfo
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- CN114142724B CN114142724B CN202111294131.1A CN202111294131A CN114142724B CN 114142724 B CN114142724 B CN 114142724B CN 202111294131 A CN202111294131 A CN 202111294131A CN 114142724 B CN114142724 B CN 114142724B
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- 238000004891 communication Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
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- 230000033228 biological regulation Effects 0.000 claims description 3
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- 238000006243 chemical reaction Methods 0.000 abstract description 65
- 238000010586 diagram Methods 0.000 description 15
- 238000002955 isolation Methods 0.000 description 14
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- 238000004590 computer program Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
Abstract
A power supply system, a voltage setting device, a voltage setting method and a communication system, the power supply system includes: an input port, an output port, a first voltage converter, and a second voltage converter; the first voltage converter is used for detecting the input voltage of an external input voltage source, when the input voltage of the input voltage source is not in a set voltage range, the input voltage of the input voltage source is regulated in the set voltage range and is output to the second voltage converter, and when the input voltage is in the set voltage range, the input voltage of the input voltage source is transmitted to the second voltage converter; the second voltage converter receives the output voltage of the first voltage converter and adjusts and outputs the output voltage of the first voltage converter to the load according to a first set proportion. By utilizing the power supply system provided by the application, the conversion efficiency of the power supply system can be improved on the premise of simultaneously meeting the input of wide voltage and the output of narrow voltage, so that higher power density is realized, and space is saved.
Description
Technical Field
The present disclosure relates to the field of power supply of communication devices, and in particular, to a power supply system, a voltage setting device, a voltage setting method, and a communication system.
Background
With the gradual development of electronic technology, the communication equipment is used more and more widely, and in a globalization scene, the power supply of the communication equipment needs to adapt to input voltages with different magnitudes so as to supply power to the communication equipment. For example, in a power supply system in China, the power supply voltage supplied to the communication equipment is-48V, but not all countries use this power supply standard, for example, russian would use-60V for power supply and some areas might use-36V for power supply. Thus, if the communication device is to be used in these areas, these different power supply standards for different areas are to be considered. In addition, the voltage range that the communication device of the back end allows to input is: 9-14V. Therefore, the voltage range of the input voltage is wider than that of the output voltage, so that the power supply of the communication equipment can simultaneously realize the wide input voltage (-36V to-72V) and the narrow output voltage (9-14V), and the power supply of the communication equipment realizes voltage conversion in a closed-loop control mode, namely, when the input voltage, the parameters of internal components, an external load and other factors change, the closed-loop control is realized, namely, the difference value between a controlled signal and a reference signal is detected, and the conduction pulse width of a power switching device in the power supply is regulated by utilizing the difference value, so that the average value of the output voltage is changed, and the output voltage of the power supply of the communication equipment can be kept stable. Although this approach can achieve both a wider input voltage and a narrower output voltage, it can lead to a reduction in overall voltage conversion efficiency and make it difficult to increase the power density of the power supply of the communication device.
Therefore, it is necessary to optimize the internal structure of the power supply of the communication device so that it improves the conversion efficiency on the premise of satisfying the wide input voltage and the narrow output voltage, thereby realizing higher power density to save the space of the communication device.
Disclosure of Invention
The utility model provides a power supply system, voltage setting device, voltage setting method communication system utilizes the first voltage converter in the power supply system, can narrow the input voltage scope of direct current input source, makes the second voltage converter of rear end not use the mode of closed loop work, also can accomplish the voltage conversion of wide input narrow output to, because the second voltage converter of rear end is in open loop operating condition, therefore its work efficiency is higher than the effect of closed loop work, can reduce to minimum to whole power supply system's efficiency influence.
In a first aspect, the present application provides a power supply system including an input port, an output port, a first voltage converter, and a second voltage converter; the input port is connected with an input voltage source, and the output port is connected with a load; the input end of the first voltage converter is connected with the input port, the input end of the second voltage converter is connected to the output end of the first voltage converter, and the input end of the second voltage converter is connected to the output port; the first voltage converter is used for detecting the input voltage of the input voltage source, adjusting the input voltage of the input voltage source within a set voltage range when the input voltage of the input voltage source is not within the set voltage range, outputting the input voltage to the second voltage converter, and directly transmitting the input voltage of the input voltage source to the second voltage converter when the input voltage of the input voltage source is within the set voltage range; the second voltage converter is used for: and receiving the output voltage of the first voltage converter, and adjusting and outputting the output voltage of the first voltage converter to supply power to a load according to a first set proportion.
The first voltage converter may further include a voltage detection circuit, where the voltage detection circuit is configured to detect an input voltage of the input voltage source. The first voltage converter may further comprise a data processing unit, which may be a processor or a controller. The set voltage range may be determined by a voltage range of the load allowed input and a linear buck ratio of the second voltage converter. When the input voltage of the input voltage source is not in the set voltage range, the input voltage of the input voltage source is regulated to be the set voltage and then is output to the second voltage converter. And the set voltage is in the set voltage range.
Utilize the utility model provides a power supply system, through the first voltage converter of newly increasing, adjust the voltage of input voltage source input, make its input voltage's voltage range further narrow to make the second voltage converter of rear end can realize the conversion of voltage through the mode of open loop control, its work efficiency compares closed loop work higher, and the efficiency influence to whole power supply system can be reduced to minimum, is favorable to the realization of power miniaturization. In addition, the voltage conversion process is respectively dispersed in the first voltage converter and the second voltage converter, so that the heat consumption of the whole power conversion part is also dispersed into two parts, and the realization of heat dissipation of a power supply system is more facilitated. In addition, because the voltage that external power supply provided is in the setting voltage range generally, the power supply system that this application provided has obvious promotion to most power supply scenes, and the scene that external power supply was not in the setting voltage range can also be taken into account in whole conversion efficiency.
As a possible implementation manner, the input voltage of the input voltage source is greater than the first voltage and less than the second voltage, and the input voltage allowed by the load is greater than the third voltage and less than the fourth voltage; the ratio of the second voltage to the first voltage is greater than the ratio of the fourth voltage to the third voltage. The first voltage may be a lower limit value of a voltage input to the first voltage converter by the input voltage source, and the second voltage may be an upper limit value of a voltage input to the first voltage converter by the input voltage source; the third voltage may be a lower limit value of the voltage of the input allowed by the load, and the fourth voltage may be an upper limit value of the voltage of the input allowed by the load. When the ratio of the second voltage to the first voltage is greater than the ratio of the fourth voltage to the third voltage, the voltage range of the input voltage source is a wide range compared with the voltage range of the input allowed by the load, and correspondingly, the voltage range of the input allowed by the load is a narrow range.
As a possible implementation manner, when the input voltage of the input voltage source is not in the set voltage range, the first voltage converter adjusts the input voltage of the input voltage source to the set voltage and outputs the set voltage to the second voltage converter, wherein the set voltage is in the set voltage range.
As a possible embodiment, the first voltage converter comprises at least one switching device; the first voltage conversion circuit is used for feeding back the voltage between the output end of the first voltage converter and the second voltage converter as a feedback signal to the control end corresponding to the at least one switching device when the input voltage of the input voltage source is not in the set voltage range, so that the first voltage converter outputs the set voltage, and the set voltage is in the set voltage range.
When the actual output voltage of the first voltage converter is different from the preset required set voltage, the first voltage converter in the boosting closed loop state can continuously adjust the duty ratio of a switching tube of the first voltage converter, and further the actual output voltage of the first voltage converter is equal to the preset required output voltage set voltage. When the actual output voltage of the first voltage conversion circuit is different from the preset required set voltage, the first voltage conversion circuit in the step-down closed loop state can continuously adjust the duty ratio of a switching tube of the first voltage conversion circuit, and further the actual output voltage of the first voltage conversion circuit is equal to the preset required output voltage set voltage.
As a possible implementation manner, the first voltage converter adjusts and outputs the input voltage of the input voltage source to the second voltage converter according to the second set proportion when the input voltage of the input voltage source is not in the set voltage range.
As a possible implementation, the first voltage converter includes at least one switching device therein; when the input voltage of the input voltage source is not in the set voltage range, the first voltage converter fixes the on time of at least one switching device in one working period at the set time so as to enable the input voltage of the input voltage source to be adjusted and output to the second voltage converter according to a second set proportion.
As one possible implementation, the power supply system further includes: the interface circuit is connected between the input port and the first voltage converter; the interface circuit unit includes: reverse connection preventing circuit and electromagnetic interference EMI filter circuit.
The reverse connection prevention circuit comprises a first switch and a second switch, wherein the first switch is connected in series between the positive terminal of the input voltage source and the first voltage converter; the second switch is connected in series between the negative terminal of the input voltage source and the first voltage converter, and the anti-reverse circuit is used for detecting whether current input exists between the positive terminal of the input voltage source and the negative terminal of the input voltage source, and controlling the first switch and the second switch to be closed when current input exists between the positive terminal of the input voltage source and the negative terminal of the input voltage source. The EMI filter circuit is configured to: common mode noise current input by the input voltage source is filtered. The specific filter circuit can be an active circuit or a passive circuit, and the filter circuit can comprise the following components: common mode inductance, differential mode inductance, common mode capacitance, differential mode capacitance, and the like. The interface circuit may further include: the isolation circuit is used for detecting whether current is input or not, and conducting the input port with the first voltage converter when the current is input; when no current input is detected, the input port is disconnected from the first voltage converter. The isolation circuit may adopt an optical coupling isolation mode, or may adopt other isolation circuits with isolation effects, as long as the isolation circuit can physically open or close a circuit between the input port and the first voltage converter. In addition, when the voltage input by the input voltage source is too high, the connection between the input port and the first voltage converter is cut off, so that the connection to the load can be ensured not to be influenced.
As a possible implementation, the interface circuit unit may further comprise a lightning protection circuit. The lightning protection circuit may include a bleeder circuit or a clamp circuit, and the bleeder circuit may include an inductor therein, which may be, but is not limited to, a decoupling inductor, and the bleeder circuit is used for lightning protection of the input circuit.
The interface circuit provided by the embodiment of the application can also comprise a slow start circuit, wherein the slow start circuit can comprise a transistor switch and a switch control circuit; the switch control circuit is connected between the grid electrode and the drain electrode of the transistor switch and is connected with an input power supply; the switch control circuit absorbs a large amount of instant current by adjusting the characteristic of the junction capacitance between the gate and the drain of the transistor switch to be linear, thereby realizing slow start. In order to further save space, optionally, since the first voltage converter or the second voltage converter may include a BUCK circuit or a BOOST circuit, the BUCK circuit or the BOOST circuit itself has a slow start function. Therefore, the BUCK circuit or the BOOST circuit in the first voltage converter or the second voltage converter can be used for achieving the slow starting function in the interface circuit unit, and the area and cost influence of the power supply system in practical application are further reduced in a circuit multiplexing mode.
In a second aspect, the present application provides a voltage setting device, the voltage setting device comprising: a voltage detection circuit and a first voltage converter; the voltage detection circuit is used for: detecting an input voltage of an input voltage source; the first voltage converter is used for adjusting the input voltage of the input voltage source within a set voltage range when the input voltage of the input voltage source is not within the set voltage range, and directly outputting the input voltage of the input voltage source when the input voltage of the input voltage source is within the set voltage range.
As a possible implementation manner, when the input voltage of the input voltage source is not in the set voltage range, the first voltage converter adjusts the input voltage of the input voltage source to the set voltage, and the set voltage is in the set voltage range.
As a possible implementation manner, the first voltage converter adjusts the input voltage of the input voltage source according to the second set proportion when the input voltage of the input voltage source is not in the set voltage range.
In a third aspect, the present application provides a voltage setting method, the method comprising: detecting an input voltage of an input voltage source; when the input voltage of the input voltage source is not in the set voltage range, adjusting the input voltage of the input voltage source in the set voltage range; when the input voltage of the input voltage source is in the set voltage range, the input voltage of the input voltage source is directly output.
In a fourth aspect, the present application provides a communication system comprising the power supply system provided in the first aspect and a communication device; the power supply system is connected with an input voltage source; the power supply system is used for supplying power to the communication device.
These and other aspects of the present application will be more readily apparent from the following description of the embodiments.
Drawings
FIG. 1 is a schematic diagram of a power supply system;
FIG. 2 is a schematic diagram of a power system;
FIG. 3 is a schematic diagram of a third power supply system;
FIG. 4 is a schematic diagram of a power supply system;
FIG. 5 is a schematic diagram of a power supply system;
FIG. 6A is a schematic diagram of a BOOST circuit;
FIG. 6B is a schematic diagram of a BUCK step-down circuit;
FIG. 7 is a schematic diagram of a power supply system;
fig. 8 is a schematic structural diagram of a voltage regulator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted. The words expressing the positions and directions described in the present application are described by taking the drawings as an example, but can be changed according to the needs, and all the changes are included in the protection scope of the present application. The drawings of the present application are merely schematic representations, not to scale.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be described in further detail with reference to the accompanying drawings. The specific method of operation in the method embodiment may also be applied to the device embodiment or the system embodiment. In the description of the present application, "at least one" means one or more, wherein a plurality means two or more. In view of this, the term "plurality" may also be understood as "at least two" in embodiments of the present invention. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/", unless otherwise specified, generally indicates that the associated object is an "or" relationship. In addition, it should be understood that in the description of this application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order.
It should be noted that "connected" in the embodiments of the present application refers to an electrical connection, and two electrical components may be connected directly or indirectly between two electrical components. For example, a may be directly connected to B, or indirectly connected to B through one or more other electrical components, for example, a may be directly connected to B, or directly connected to C, and C may be directly connected to B, where a and B are connected through C.
It should be noted that, in the embodiment of the present application, the "transformation ratio" of the voltage converter refers to a ratio between a larger voltage of the input voltage and the output voltage of the voltage converter and a smaller voltage of the input voltage and the output voltage. If the voltage converter performs the buck conversion, the output voltage of the voltage converter is smaller than the input voltage of the voltage converter, and the conversion ratio of the voltage converter is the input voltage/output voltage. If the voltage converter performs the boost conversion, the output voltage of the voltage converter is larger than the input voltage of the voltage converter, and the conversion ratio of the voltage converter is the output voltage/input voltage.
In this embodiment, the open loop control method refers to: the switching tube in the voltage converter works at a fixed frequency and a fixed duty cycle, and the gain of the voltage converter is a fixed value. The open loop control mode can be in a straight-through state or an open loop state according to the different states of the switching tube in the open loop control mode. The closed loop control mode refers to: and the output voltage is used as a feedback signal, so that the duty ratio of the switching tube is controlled to stabilize the output voltage. Similar to the open loop control method, the closed loop control method can be in a straight-through state and a closed loop state according to the closed or open state of the switching tube.
The power consumption or loss referred to in the following embodiments may be understood as the power consumed per unit time, including the effective power for supplying power, and the ineffective power consumed, such as heat loss, transmission loss, and the like.
It should be noted that the broad voltage range and the narrow voltage range described in the following embodiments are both relative concepts, for example, when the voltage range of the input voltage is-36V to-72V and the voltage range of the input voltage is 9V to 14V, the ratio of the maximum value of the input voltage to the minimum value of the input voltage is-72V/-36 v=2 in the range of the input voltage, and the ratio of the maximum value of the output voltage to the minimum value of the output voltage is 14V/9v≡1.56 in the range of the output voltage. Therefore, the voltage range of the input voltage is wider than the voltage range of the output voltage. The voltage range of the input voltage is a relatively wide voltage range, while the voltage range of the output voltage is a relatively narrow voltage range.
In order to facilitate understanding of the power supply system provided by the embodiment of the present application, a specific application scenario thereof will be described first. The following embodiments are each exemplified by powering a communication device.
At present, in a globalization scene, the power supply of the communication equipment needs to adapt to input voltages with different magnitudes, so that the communication equipment in different areas can be adapted to supply power. For example, the power supply voltage provided to the communication device in China is-48V, but not all countries use this power supply standard, e.g., russian would use-60V for power supply and some areas might use-36V for power supply. In the power supply system, the reason why the negative voltage is used for power supply is: the anti-interference performance of the power supply by using the negative power supply is better, if the power supply is positive voltage, the iron core of equipment such as a relay and the like is connected with a frame, the coil is electrified, the corroded coil with a very thin wire diameter is adopted, and the fault rate is higher; therefore, the positive electrode of the power supply is grounded (a rack), the working power supply of the coil is negative voltage, the corroded iron core has a large size, and the failure rate of the iron core is greatly reduced. Therefore, the communication equipment adopts a mode of supplying power by grounding negative voltage at the positive electrode, and the corrosion phenomenon of the positive electrode of the storage battery can be reduced by utilizing the negative voltage to supply power.
And the input voltage usually allowed by a plastic package power supply system (power system in package, PSiP), a voltage regulating power supply module (voltage regulate module, VRM) and the like in the back-end communication equipment is 12V (the actual allowed input voltage is 9-14V). Therefore, the power supply for voltage conversion under the existing architecture can only perform voltage conversion by using a DC-DC conversion method of a voltage stabilizing closed loop. Current use is typically made of an on-board power supply (board mouted powersupply, BMP) for closed loop voltage regulation.
The on-board power supply may be a power supply directly mounted on a printed circuit board, and is characterized by providing power to an application specific integrated circuit (application specific integrated circuits, ASIC), a digital signal processor (digital signal processing, DSP), a microprocessor, a memory, a field programmable gate array (field programmable gate array, FPGA), and other digital or analog loads. The on-board power supply adopts a closed-loop control method to convert a wide-range input voltage (-36V to-72V) into a stable voltage for output, the output voltage of the on-board power supply adopting closed-loop voltage stabilization is regulated by the duty ratio of an excitation signal, and the change of the excitation signal can be compensated by frequency modulation or width modulation, so that when the input voltage change is larger, the stable output voltage can be ensured. The voltage stabilizing range using the closed loop voltage stabilizing method is wide. The duty ratio is changed by two methods, namely a pulse width modulation type and a frequency modulation type. However, when the on-board power supply with closed loop voltage stabilization is used for voltage conversion, serious switching interference and loss exist, the output voltage and current can generate peak interference and resonance interference through other components in the circuit, the circuit structure in the on-board power supply with closed loop voltage stabilization is complex, the fault rate is high, the maintenance is troublesome, the working efficiency and the power density are difficult to design and are high, and the performance requirements on the devices are also high.
Therefore, it is necessary to optimize the internal structure of the power supply of the communication device so that it improves the conversion efficiency on the premise of satisfying the wide input voltage and the narrow output voltage, thereby realizing higher power density to save the space of the communication device.
Fig. 1 shows a possible application scenario of the embodiment of the present application, as shown in fig. 1, the power supply system 100 includes: an input port 10, an output port 20, a first voltage converter 30, and a second voltage converter 40; the input port 10 is connected to an input voltage source 50, and the output port 20 is connected to a load 60 (i.e., a communication device); an input of the first voltage converter 30 is connected to the input port 10, an input of the second voltage converter 40 is connected to an output of the first voltage converter 30, and an input of the second voltage converter 40 is connected to the output port 20.
The first voltage converter 30 is configured to detect an input voltage of the input voltage source 50, adjust the input voltage of the input voltage source 50 within a set voltage range when the input voltage of the input voltage source 50 is not within the set voltage range, and output the input voltage to the second voltage converter 40; when the input voltage of the input voltage source is in a set voltage range, the input voltage of the input voltage source 50 is directly transmitted to the second voltage converter 40.
The second voltage converter 40 is configured to receive the output voltage of the first voltage converter 30, and adjust and output the output voltage of the first voltage converter 30 to the load 60 according to a first set proportion.
In the existing scenario, since the supply voltages in different regions are different and very different, i.e. the voltage range of the input voltage source 50 in the power supply system 100 is wide, the load 60 in the power supply system 100 requires a narrower range of voltage input. This results in existing power supply systems having to perform voltage conversion using closed loop voltage regulation. However, in practice, since the voltage range of the input voltage source 50 is larger than the voltage range of the output voltage, there is a part of the voltage range of the input voltage source 50 that is matched with the voltage range of the output voltage, that is, the second voltage converter 40 does not need to use a closed-loop voltage stabilizing manner to well complete the voltage conversion. For example, if the voltage range of the input voltage source 50 is (-36V to-72V) and the voltage range of the load 60 allowed to be input is (9V-14V), the voltage conversion is performed by switching from (-36V to-56V) in the voltage range of the input voltage source 50 to the voltage range of the load 60 allowed to be input (9V-14V), and only an open loop control method is required. In other words, when the input voltage of the input voltage source 50 is in the voltage range (-36V to-56V), the second voltage converter 40 can perform the voltage conversion by linearly reducing the input voltage of the input voltage source 50 only by using the open loop conversion (linear conversion). When the input voltage of the input voltage source 50 is in the voltage range (-56V to-72V), closed loop voltage stabilizing control or other voltage conversion modes are used. Thus, in the input voltage range of the input voltage source 50 (for example, -36V to-56V of-48V system), the link loss of the power supply system 100 is basically negligible, and when the input voltage source works in (-56V to-72V) system, the power supply system 100 can still work normally, and outputs a narrow-range output voltage (9V to 14V) to the load 60 at the rear end.
Referring to fig. 2, optionally, the first voltage converter 30 in fig. 2 may include a voltage detection circuit 31, where the voltage detection circuit 31 is configured to detect an input voltage of the input voltage source 50. The voltage detection can be performed by adopting a resistive voltage division detection or coupling capacitance detection mode. Illustratively, the voltage detection circuit 31 may include a voltage transformer, which may form a coupling capacitor with a cable between the input voltage source 50 and the first voltage converter 30, and obtain the input voltage of the input voltage source 50 according to the capacitance value of the coupling capacitor. Furthermore, the voltage detection circuit 31 may further comprise an analog-to-digital converter (analog to digital converter, ADC) for converting the detected input voltage of the input voltage source 50 from an analog quantity to a digital quantity.
Referring to fig. 3, the first voltage converter 30 in fig. 3 may further include a data processing unit 32, where the data processing unit 32 may be a processor or controller, and may be, for example, a general purpose central processing unit (central processing unit, CPU), a general purpose processor, a digital signal processing, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor described above may also be a combination that performs the function of a computation, e.g., including one or more microprocessors, a combination of a DSP and a microprocessor, and so on. The data processing unit 32 may determine the input voltage of the input voltage source 50 with the physical quantity detected by the voltage detection circuit 31.
The set voltage range may be determined by the voltage range that the load 60 allows to input and the linear buck ratio of the second voltage converter 40. Illustratively, the voltage range allowed to be input at load 60 is: 9V-14V, and the set voltage range is (9V (-4) to 14V (-4)), namely (-36V to-56V), when the linear buck conversion ratio of the second voltage converter 40 is 4: (-1).
When the input voltage of the input voltage source 50 is not within the set voltage range, the input voltage of the input voltage source 50 is adjusted within the set voltage range and output to the second voltage converter 40. Therefore, referring to fig. 4, the first voltage converter 30 in fig. 4 may further include a voltage stabilizing circuit 33, where the voltage stabilizing circuit 33 is configured to adjust the input voltage of the input voltage source 50 within a set voltage range when it is determined that the input voltage of the input voltage source 50 is not within the set voltage range, and output the adjusted input voltage to the second voltage converter 40. Specifically, the voltage stabilizing circuit 33 is in an open-loop state or a closed-loop state of boosting or dropping. By way of example, when in the closed loop state, the output voltage is fed back to the feedback circuit, and the duty ratio of the switching tube is continuously adjusted, so that the actual output voltage of the voltage stabilizing circuit 33 is equal to the preset required output voltage setting voltage.
The second voltage converter 40 in the embodiment of the present application is configured to receive the output voltage of the first voltage converter 30, and adjust the output voltage of the first voltage converter 30 according to a first set proportion, and then supply power to the load. Wherein the first set proportion is related to the set voltage range and the voltage range that the load allows to input. For example, when the set voltage range is (-36V to-56V) and the load-allowable input voltage range is (9V to 14V), the first set ratio is: 9V/-36 v= -0.25.
Optionally, the second voltage converter 40 may include: the step-down circuit may be a BUCK step-down circuit, and the specific circuit structure is not described herein in detail. It should be noted that, the step-down circuit is in an open loop state, the circuit gain is a preset value, and a feedback loop may be present or not be set in the circuit. In a step-down circuit in which a feedback loop is present, the feedback loop is in an open state when the step-down circuit is in an open state. Since the step-down circuit is in an open loop state, the conversion efficiency of the circuit is high. In summary, when the input voltage of the input voltage source is in the set voltage range, the second voltage converter 40 is in an open loop state, so as to convert the input voltage of the input voltage source into a voltage range in which the load allows to input, so that the whole power system 100 can work under high efficiency; when the input voltage of the input voltage source is not within the set voltage range, the voltage stabilizing circuit 33 in the first voltage converter 30 can firstly adjust the input voltage of the input voltage source to be within the set voltage range, so that the second voltage converter 40 can also convert the input voltage of the input voltage source 50 to be within the voltage range allowed by the load, so that the whole power system 100 can operate at a higher efficiency, and because the condition that the input voltage of the input voltage source 50 is not within the set voltage range is less common, the whole power system 100 can operate at a higher efficiency in most of the time. The power supply system 100 provided by the application can improve the conversion efficiency on the premise of meeting the requirements of wide input voltage and narrow output voltage, thereby realizing higher power density.
As a possible implementation manner, the input voltage of the input voltage source 50 is greater than the first voltage and less than the second voltage, and the input voltage allowed by the load 60 is greater than the third voltage and less than the fourth voltage; the ratio of the second voltage to the first voltage is greater than the ratio of the fourth voltage to the third voltage.
Wherein, the first voltage may be a lower limit value of the voltage input to the first voltage converter 30 by the input voltage source 50, and the second voltage may be an upper limit value of the voltage input to the first voltage converter 30 by the input voltage source 50; the third voltage may be a lower limit value of the voltage allowed to be input by the load 60, and the fourth voltage may be an upper limit value of the voltage allowed to be input by the load 60. When the ratio of the second voltage to the first voltage is greater than the ratio of the fourth voltage to the third voltage, it is indicated that the voltage range of the input voltage source 50 is wide compared to the voltage range of the input allowed by the load 60, and correspondingly, the voltage range of the input allowed by the load 60 is narrow.
As a possible implementation, the first voltage converter 30 is configured to: when the input voltage of the input voltage source 50 is not in the set voltage range, the input voltage of the input voltage source 50 is adjusted to be the set voltage, and then the set voltage is output to the second voltage converter 40, wherein the set voltage is in the set voltage range.
As a possible implementation, referring to fig. 5, the first voltage converter 30 in fig. 5 includes a voltage conversion circuit 34; the voltage conversion circuit 34 includes at least one switching device; the voltage conversion circuit 34 is configured to: when the input voltage of the input voltage source 50 is not within a set voltage range, the voltage between the output terminal of the first voltage converter 30 and the second voltage converter 40 is fed back to the control terminal corresponding to the at least one switching device as a feedback signal, so that the voltage conversion circuit 34 outputs the set voltage.
Specifically, when the input voltage of the input voltage source 50 is smaller than the set voltage range, the voltage conversion circuit 34 is in a boost closed-loop state, and the actual output voltage of the voltage conversion circuit 34 is continuously fed back to the feedback circuit thereof, and when the actual output voltage of the voltage conversion circuit 34 is different from the preset required set voltage, the voltage conversion circuit 34 in the boost closed-loop state can continuously adjust the duty ratio of the switching tube thereof, so that the actual output voltage of the voltage conversion circuit 34 is equal to the preset required output voltage set voltage.
For example, referring to fig. 6A, the voltage conversion circuit 34 may include: BOOST circuit, this BOOST circuit includes first electric capacity C1, inductance L, first switch Q1, second switch Q2 and second electric capacity C2. The first switch Q1 is a switch tube, the second switch Q2 can be a switch tube or a diode, the first end of the first switch Q1 is connected with the first end of the inductor L, the second end of the inductor L is respectively connected with the first end of the first switch Q1 and the first end of the second switch Q2, the second end of the first switch Q1 is respectively connected with the second end of the first switch Q1 and the second end of the second switch C2, and the second end of the second switch Q2 is connected with the first end of the second switch C2; the third terminal of the first switch Q1 is used for inputting a signal for controlling the state of the second switch Q2, and the third terminal of the second switch Q2 is used for inputting a signal for controlling the state of the second switch Q2.
When the input voltage of the input voltage source 50 is greater than the set voltage range, the voltage conversion circuit 34 is in a step-down closed loop state, and the actual output voltage of the voltage conversion circuit 34 is fed back to the feedback circuit thereof, and when the actual output voltage of the voltage conversion circuit 34 is different from the preset required set voltage, the voltage conversion circuit 34 in the step-down closed loop state can continuously adjust the duty ratio of the switching tube thereof, so that the actual output voltage of the voltage conversion circuit 34 is equal to the preset required output voltage set voltage.
For example, referring to fig. 6B, the voltage conversion circuit 34 may include: the BUCK circuit comprises a first capacitor C1, a first switch Q1, a second switch Q2, an inductor L and a second capacitor C2. The first switch Q1 is a switch tube, the second switch Q2 may be a switch tube or a diode, the first end of the first capacitor C1 is connected to the first end of the first switch Q1, the second end of the first switch Q1 is connected to the first end of the inductor L and the first end of the second switch Q2, the third end of the first switch Q1 is used for inputting a signal for controlling the state of the first switch Q1, the second end of the second switch Q2 is connected to the second end of the first capacitor C1 and the first end of the second capacitor C2, the third end of the second switch Q2 is used for inputting a signal for controlling the state of the second switch Q2, and the second end of the inductor L is connected to the second end of the second capacitor C2.
In some cases, the voltage input by the input voltage source 50 is not in the set voltage range, but the voltage input by the input voltage source 50 may be set to meet the desired voltage range, rather than being in a fixed voltage, so as to further improve the conversion efficiency of the power supply system 100. As a possible implementation manner, when the input voltage of the input voltage source 50 is not in the set voltage range, the input voltage of the input voltage source 50 is adjusted according to the second set ratio and then output to the second voltage converter 40. Optionally, the voltage conversion circuit 34 may also be configured to: when the input voltage of the input voltage source 50 is not in the set voltage range, the on time of the at least one switching device in one working period is fixed at the set time, so that the input voltage of the input voltage source 50 is reduced according to a second set proportion.
Specifically, when the input voltage of the input voltage source 50 is smaller than the set voltage range, the voltage conversion circuit 34 may be in a boost open loop state, and the on time of the at least one switching device in the voltage conversion circuit 34 in one working cycle is fixed at the set time, so that the gain of the voltage conversion circuit 34 is fixed, so that the actual output voltage of the voltage conversion circuit 34 is in the set voltage range.
When the input voltage of the input voltage source 50 is greater than the set voltage range, the voltage conversion circuit 34 is in a step-down open loop state, and the on time of the at least one switching device in the voltage conversion circuit 34 in one working period is fixed at the set time, so that the gain of the voltage conversion circuit 34 is fixed, and the actual output voltage of the voltage conversion circuit 34 is in the set voltage range. For example, at a voltage of-56V to-72V of the input voltage source 50, the gain size of the voltage conversion circuit 34 may be set to 0.7, thereby setting the voltage passing through the voltage conversion circuit 34 to a voltage range of-39.2V to-50.4V. In this way, the actual output voltage of the voltage conversion circuit 34 is within the set voltage range, and the second voltage converter 40 at the rear end can also convert the input voltage of the input voltage source 50 into the voltage range that the load 60 allows to input, so that the whole power system 100 can work at a higher efficiency.
As a possible implementation, referring to fig. 7, the power supply system 100 further includes: an interface circuit 70, the interface circuit 70 being connected between the input port 10 and the first voltage converter 30; the interface circuit 70 includes: an anti-reverse connection circuit 71 and an electromagnetic interference (electromagnetic interference, EMI) EMI filter circuit 72;
the reverse connection preventing circuit 71 includes: a first switch and a second switch, the first switch being connected in series between the positive terminal of the input voltage source 50 and the first voltage converter 30; the second switch is connected in series between the negative terminal of the input voltage source 50 and the first voltage converter 30, and the anti-reverse circuit 71 is configured to: detecting whether current is input to the positive terminal of the input voltage source 50 and the negative terminal of the input voltage source 50, and controlling the first switch and the second switch to be closed when current is input to the positive terminal of the input voltage source 50 and the negative terminal of the input voltage source 50.
The first switch and the second switch may be in a normally open state, and the first switch and the second switch are closed only when detecting that a positive terminal of an input voltage source and a negative terminal of the input voltage source both input current of correct polarity.
The electromagnetic interference EMI filter circuit 72 is configured to: common mode noise current input by the input voltage source 50 is filtered out. Specifically, the filter circuit 72 may be an active circuit or a passive circuit, and the filter circuit 72 may include, but is not limited to, the following components: common mode inductance, differential mode inductance, common mode capacitance, differential mode capacitance, and the like.
Optionally, the interface circuit 70 may further include an isolation circuit, where the isolation circuit is configured to detect whether there is a current input, and to make the input port conductive to the first voltage converter 30 when the current input is detected; when no current input is detected, the input port 10 is disconnected from the first voltage converter 30. Specifically, the isolation circuit may adopt an optical coupling isolation mode, or may adopt other isolation circuits with isolation effects, and the embodiment of the present application does not limit the specific form and structure of the isolation circuit, as long as the isolation circuit can physically open or close the circuit between the input port 10 and the first voltage converter 30. In addition, when the voltage input from the input voltage source 50 is too high, the connection between the input port 10 and the first voltage converter 30 is cut off, so that the connection to the load 60 can be ensured not to be affected.
Optionally, the interface circuit 70 provided in the embodiments of the present application may further include a lightning protection circuit. Illustratively, the lightning protection circuit may include a bleeder circuit or a clamping circuit, and the bleeder circuit may include an inductor therein, which may be, but is not limited to, a decoupling inductor, and the bleeder circuit is used for lightning protection of the input circuit.
In addition, the interface circuit 70 provided in the embodiment of the present application may further include a slow start circuit, where the slow start circuit may include, but is not limited to, a transistor switch and a switch control circuit; the switch control circuit is connected between the grid electrode and the drain electrode of the transistor switch and is connected with an input power supply; the switch control circuit absorbs a large amount of instant current by adjusting the junction capacitance between the gate and the drain of the transistor switch, so that slow start is realized. Optionally, since the first voltage converter 30 or the second voltage converter 40 may include a BUCK circuit or a BOOST circuit, the BUCK circuit or the BOOST circuit may have a slow start function. Therefore, the BUCK circuit or the BOOST circuit in the first voltage converter 30 or the second voltage converter 40 can be used to achieve the soft start function in the interface circuit 70, so that the area and the cost of the power supply system 100 are further reduced in a mode of multiplexing the soft start circuit.
Utilize the utility model provides a power supply system, through the first voltage converter of newly increasing, the voltage of adjustment input voltage source input makes its input voltage's voltage range further narrow to make the second voltage converter of rear end can realize the conversion of voltage through the mode of open loop control, its work efficiency is higher than the effect of closed loop work, can reduce to minimum to the efficiency influence of whole power supply system, is favorable to the miniaturized realization of power. And the voltage conversion process is respectively dispersed in the first voltage converter and the second voltage converter, so that the heat consumption of the whole power conversion part is dispersed into two parts, and the realization of heat dissipation of a power supply system is more facilitated. In addition, since some circuits in the interface circuit unit can be multiplexed with the first voltage converter, the cost and area of the power supply system can be reduced. In addition, because the voltage that external power supply provided is in the setting voltage range generally, the power supply system that this application provided has obvious promotion to most power supply scenes, and the voltage that external power supply was taken into account still can not be in the minority scene of setting voltage range.
Referring to fig. 8, an embodiment of the present application provides a voltage setting device 800, where the voltage setting device 800 includes: a voltage detection circuit 801 and a first voltage converter 802; the voltage detection circuit 801 is configured to: detecting an input voltage of the input voltage source; the first voltage converter 802 is configured to adjust an input voltage of the input voltage source within a set voltage range when the input voltage of the input voltage source is not within the set voltage range; and when the input voltage of the input voltage source is in a set voltage range, directly outputting the input voltage of the input voltage source.
As a possible implementation manner, the first voltage converter 802 is configured to adjust the input voltage of the input voltage source to a set voltage when the input voltage of the input voltage source is not in a set voltage range, where the set voltage is in the set voltage range.
As a possible implementation manner, the first voltage converter 802 is configured to adjust the input voltage of the input voltage source according to a second set proportion when the input voltage of the input voltage source is not in the set voltage range.
The embodiment of the application also provides a voltage setting method, which comprises the following steps: detecting an input voltage of an input voltage source; when the input voltage of the input voltage source is not in a set voltage range, adjusting the input voltage of the input voltage source in the set voltage range; and when the input voltage of the input voltage source is in a set voltage range, directly outputting the input voltage of the input voltage source.
The embodiment of the application also provides a communication system, which comprises the power supply system and the communication equipment; the power supply system is connected with an input voltage source; the power supply system is used for supplying power to the communication equipment.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (7)
1. A power supply system, the power supply system comprising: an input port, an output port, a first voltage converter, and a second voltage converter; the input port is connected with an input voltage source, and the output port is connected with a load; the input end of the first voltage converter is connected with the input port, the input end of the second voltage converter is connected to the output end of the first voltage converter, and the input end of the second voltage converter is connected to the output port;
The first voltage converter is configured to: detecting the input voltage of the input voltage source, adjusting the input voltage of the input voltage source within a set voltage range when the input voltage of the input voltage source is not within the set voltage range, and outputting the input voltage to the second voltage converter; when the input voltage of the input voltage source is in a set voltage range, the input voltage of the input voltage source is directly transmitted to the second voltage converter, and when the input voltage of the input voltage source is not in the set voltage range, the input voltage of the input voltage source is adjusted and output to the second voltage converter according to a second set proportion;
the second voltage converter is configured to: and receiving the output voltage of the first voltage converter, and adjusting and outputting the output voltage of the first voltage converter to the load according to a first set proportion.
2. The power supply system of claim 1, wherein the input voltage of the input voltage source is greater than the first voltage and less than the second voltage, and the load allows an input voltage that is greater than the third voltage and less than the fourth voltage; the ratio of the second voltage to the first voltage is greater than the ratio of the fourth voltage to the third voltage.
3. The power supply system of claim 1, wherein the first voltage converter includes at least one switching device therein;
the first voltage converter is specifically configured to: when the input voltage of the input voltage source is not in the set voltage range, the on time of the at least one switching device in one working period is fixed at the set time, so that the input voltage of the input voltage source is regulated and output to the second voltage converter according to a second set proportion.
4. A power supply system according to any one of claims 1-3, characterized in that the power supply system further comprises: an interface circuit connected between the input port and the first voltage converter; the interface circuit includes: the anti-reverse connection circuit and the electromagnetic interference EMI filter circuit;
the reverse connection preventing circuit comprises: a first switch and a second switch, the first switch being connected in series between the positive terminal of the input voltage source and the first voltage converter; the second switch is connected in series between the negative terminal of the input voltage source and the first voltage converter, and the reverse connection preventing circuit is used for: detecting whether current is input to the positive terminal of the input voltage source and the negative terminal of the input voltage source, and controlling the first switch and the second switch to be closed when current input to the positive terminal of the input voltage source and the negative terminal of the input voltage source is detected;
The EMI filter circuit is used for: and filtering the common mode noise current input by the input voltage source.
5. A voltage setting device, characterized in that the voltage setting device comprises: a voltage detection circuit, a first voltage converter, and a second voltage converter;
the voltage detection circuit is used for: detecting an input voltage of an input voltage source;
the first voltage converter is configured to: when the input voltage of the input voltage source is not in a set voltage range, adjusting the input voltage of the input voltage source in the set voltage range; when the input voltage of the input voltage source is in a set voltage range, the input voltage of the input voltage source is directly output, and when the input voltage of the input voltage source is not in the set voltage range, the input voltage of the input voltage source is adjusted and output to the second voltage converter according to a second set proportion;
the second voltage converter is configured to: and receiving the output voltage of the first voltage converter, and adjusting and outputting the output voltage of the first voltage converter to a load according to a first set proportion.
6. A method of voltage regulation, the method comprising:
Detecting an input voltage of an input voltage source;
when the input voltage of the input voltage source is not in a set voltage range, adjusting the input voltage of the input voltage source in the set voltage range; when the input voltage of the input voltage source is in a set voltage range, the input voltage of the input voltage source is directly output, and when the input voltage of the input voltage source is not in the set voltage range, the input voltage of the input voltage source is adjusted according to a second set proportion, and then the voltage adjusted according to the second set proportion or the directly output voltage is adjusted according to a first set proportion and output.
7. A communication system comprising a power supply system according to any of claims 1-4 and a communication device; the power supply system is connected with an input voltage source; the power supply system is used for supplying power to the communication equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111294131.1A CN114142724B (en) | 2021-11-03 | 2021-11-03 | Power supply system, voltage setting device, voltage setting method and communication system |
| PCT/CN2022/124342 WO2023078028A1 (en) | 2021-11-03 | 2022-10-10 | Power supply system, voltage setting apparatus, voltage setting method, and communication system |
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| CN202111294131.1A CN114142724B (en) | 2021-11-03 | 2021-11-03 | Power supply system, voltage setting device, voltage setting method and communication system |
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| CN114142724A CN114142724A (en) | 2022-03-04 |
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| US9515560B1 (en) * | 2014-08-08 | 2016-12-06 | Flextronics Ap, Llc | Current controlled resonant tank circuit |
| CN107241019A (en) * | 2017-06-19 | 2017-10-10 | 山东超越数控电子有限公司 | A kind of wide input isolation DC/DC converter design methods |
| CN207732627U (en) * | 2017-12-12 | 2018-08-14 | 荣信汇科电气技术有限责任公司 | A kind of IGBT driving powers of Width funtion input |
| CN111418137A (en) * | 2017-11-30 | 2020-07-14 | 华为技术有限公司 | Voltage conversion system and method of use |
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| CN101594053B (en) * | 2009-03-27 | 2011-08-17 | 广州金升阳科技有限公司 | Power supply converter with wide-range voltage input |
| KR101228797B1 (en) * | 2011-05-30 | 2013-01-31 | 한국과학기술원 | Power supply apparatus |
| CN114142724B (en) * | 2021-11-03 | 2024-04-12 | 华为技术有限公司 | Power supply system, voltage setting device, voltage setting method and communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9515560B1 (en) * | 2014-08-08 | 2016-12-06 | Flextronics Ap, Llc | Current controlled resonant tank circuit |
| CN107241019A (en) * | 2017-06-19 | 2017-10-10 | 山东超越数控电子有限公司 | A kind of wide input isolation DC/DC converter design methods |
| CN111418137A (en) * | 2017-11-30 | 2020-07-14 | 华为技术有限公司 | Voltage conversion system and method of use |
| CN207732627U (en) * | 2017-12-12 | 2018-08-14 | 荣信汇科电气技术有限责任公司 | A kind of IGBT driving powers of Width funtion input |
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