CN209845377U - Power supply controller, circuit for connecting load and lamp - Google Patents
Power supply controller, circuit for connecting load and lamp Download PDFInfo
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- CN209845377U CN209845377U CN201920234002.5U CN201920234002U CN209845377U CN 209845377 U CN209845377 U CN 209845377U CN 201920234002 U CN201920234002 U CN 201920234002U CN 209845377 U CN209845377 U CN 209845377U
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Abstract
The utility model discloses a power supply controller, circuit and lamps and lanterns of connecting load, this power supply controller includes: a current regulation module for regulating an output current based on a desired current of a load, having a first output terminal, and outputting the output current through the first output terminal; the loop control module is used for outputting and adjusting current according to the output current, is provided with a first input end, a second input end and a second output end, is electrically connected with the first output end through the first input end, and is electrically connected with the load through the second output end; the voltage and current feedback module is used for generating feedback voltage to control load voltage, is provided with a third output end and is electrically connected with the second input end through the third output end. Therefore, the embodiment of the utility model provides a power controller is adapted to the load of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
Description
Technical Field
The utility model relates to the technical field of circuits, especially, relate to a circuit and lamps and lanterns of electrical source controller, connection load.
Background
When the Light Emitting Diode (LED) lamps with the same power level take the factors of light efficiency, heat dissipation, color temperature and the like into consideration, a power supply controller with the output current adjustable at a factory end is needed to be provided.
In order to meet the LED lamps with different current requirements at the same power level, the current power controller can be implemented as follows: in the first mode, aiming at LED lamps with different current requirements, a circuit board is newly developed; and in the second mode, the current of the LED lamp with different current requirements is adjusted by adopting a singlechip through a software programming mode.
However, the first mode needs to redevelop the circuit board, which increases the development and test time and has a long period, and the second mode needs to be realized by combining software and hardware, so that the circuit is complex and the cost is high.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a power supply controller, circuit and lamps and lanterns of connecting load for solve current power supply controller unadjustable, circuit structure is complicated, the higher problem of cost.
The embodiment of the utility model provides an adopt following technical scheme:
in a first aspect, the present invention provides a power supply controller, including:
a current regulation module for regulating an output current based on a desired current of a load, having a first output terminal, and outputting the output current through the first output terminal;
the loop control module is used for outputting and adjusting current according to the output current, is provided with a first input end, a second input end and a second output end, is electrically connected with the first output end through the first input end, and is electrically connected with the load through the second output end;
the voltage and current feedback module is used for generating feedback voltage to control load voltage, is provided with a third output end and is electrically connected with the second input end through the third output end.
Further, the current regulation module includes:
the first resistor assembly comprises a first fixed-value resistor and a sliding resistor, and the first fixed-value resistor is connected with the sliding resistor in parallel;
a first reference voltage source connected in parallel with the first resistive component.
Further, the current regulation module includes: the circuit comprises N ith resistance components and a second reference voltage source, wherein N is a positive integer greater than or equal to 1, and the N ith resistance components are connected with the second reference voltage source in series;
the ith resistance component comprises an ith fixed value resistor, an ith-1 adjusting resistor and an ith-1 switch, wherein the ith-1 adjusting resistor is connected with the ith-1 switch in series, the ith fixed value resistor is connected with a branch circuit formed by connecting the ith-1 adjusting resistor and the ith-1 switch in series in parallel, and i is a positive integer greater than or equal to 2.
Further, if i is 2, 3, 4, and 5, the current regulation module includes:
the second resistor assembly comprises a second fixed value resistor, a first adjusting resistor and a first switch, wherein the first adjusting resistor is connected with the first switch in series, and the second fixed value resistor is connected with a branch circuit formed by connecting the first adjusting resistor and the first switch in series in parallel;
the third resistor assembly comprises a third fixed-value resistor, a second adjusting resistor and a second switch, the second adjusting resistor is connected with the second switch in series, and the third fixed-value resistor is connected with a branch circuit formed by connecting the second adjusting resistor and the second switch in series in parallel;
the fourth resistor assembly comprises a fourth fixed-value resistor, a third adjusting resistor and a third switch, the third adjusting resistor is connected with the third switch in series, and the fourth fixed-value resistor is connected with a branch of the third adjusting resistor and the third switch in series in parallel;
the fifth resistor assembly comprises a fifth fixed-value resistor, a fourth adjusting resistor and a fourth switch, the fourth adjusting resistor is connected with the fourth switch in series, and the fifth fixed-value resistor is connected with a branch circuit formed by connecting the fourth adjusting resistor and the fourth switch in series in parallel;
the second reference voltage source is connected in series with the second, third, fourth, and fifth resistive components.
Further, the first reference voltage source and the second reference voltage source are the same reference voltage source;
the second reference voltage source is connected in series with the first resistive element, the second resistive element, the third resistive element, the fourth resistive element, and the fifth resistive element.
Further, the loop control module includes: the circuit comprises a first phase compensation resistor, a second phase compensation resistor, a bias resistor, a first diode, a second diode, a constant current loop operational amplifier and a constant voltage loop operational amplifier;
the constant current loop operational amplifier is provided with a first pin and a second pin, the first pin of the constant current loop operational amplifier is the first input end, the second pin of the constant current loop operational amplifier is electrically connected with the cathode of the first diode through the first phase compensation resistor, and the anode of the first diode is the second input end;
the constant-voltage loop operational amplifier is provided with a first pin and a second pin, the first pin of the constant-voltage loop operational amplifier is electrically connected with the cathode of the second diode through the second phase compensation resistor, the anode of the second diode is the second input end, and the second pin of the constant-voltage loop operational amplifier is electrically connected with the first pin of the constant-current loop operational amplifier through the bias resistor.
Further, the loop control module includes: the voltage sampling circuit comprises a first voltage sampling resistor, a second voltage sampling resistor and a third voltage sampling resistor;
the second pin of the constant voltage ring operational amplifier is grounded through the first voltage sampling resistor, and the second pin of the constant voltage ring operational amplifier is electrically connected with the anode of the load through the second voltage sampling resistor and the third voltage sampling resistor.
Further, the voltage and current feedback module comprises:
a voltage and current feedback unit for generating a feedback voltage according to the current flowing through the loop control module, having a third output terminal and a third input terminal, and electrically connected to the second input terminal through the third output terminal;
and the voltage and current control unit is used for controlling the voltage at the two ends of the load according to the feedback voltage, is provided with a fourth output end, and is electrically connected with the third input end through the fourth output end.
Further, the voltage and current feedback unit includes:
the feedback optical coupler is provided with a first pin, a second pin, a third pin and a fourth pin, the first pin of the feedback optical coupler is electrically connected with a power supply, the second pin of the feedback optical coupler is the third output end, and the third pin of the feedback optical coupler and the fourth pin of the feedback optical coupler are the third input end.
Further, the voltage and current control unit is a PWM control circuit.
In a second aspect, the present invention provides a circuit for connecting a load, including: the PFC power factor correction circuit comprises a PFC power factor correction circuit, an isolation transformer, a power supply controller, an output filtering module and a sampling resistor; wherein the content of the first and second substances,
the power controller adopts the power controller;
the PFC power factor correction circuit is electrically connected with a voltage and current feedback module of the power controller, the voltage and current feedback module is electrically connected with the isolation transformer, the isolation transformer is electrically connected with the output filtering module, and the output filtering module is connected with the sampling resistor and the load in series.
In a third aspect, the present invention provides a lamp with a power supply controller, including: the lamp body and the circuit connected with the load; wherein the load is the lamp body.
Further, the light fixture comprises a street lamp.
The embodiment of the utility model provides an above-mentioned at least one technical scheme who adopts can reach following beneficial effect:
the embodiment of the utility model provides a power supply controller, it includes current regulation module, loop control module and voltage and current feedback module, and current regulation module's first output is connected with loop control module's first input electricity, and voltage and current feedback module's third output is connected with loop control module's second input electricity, and loop control module's second output is connected with the load electricity. The current regulation module is used for regulating output current based on the current of a load and transmitting the output current to the loop control module through a first output end and a first input end; the loop control module is used for outputting the adjusting current to the load through the second output end after the output current is operated; the voltage and current feedback module is used for generating feedback voltage according to the current flowing through the loop control module so as to control the load voltage. Therefore, the embodiment of the utility model provides a power controller is adapted to the load of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 is a schematic structural diagram of a power supply controller according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a circuit for connecting a load according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a lamp with a power supply controller according to an embodiment of the present invention.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a power supply controller 40 according to an embodiment of the present invention includes: a current regulation module 1 for regulating the output current based on the required current of the load, a loop control module 2 for outputting a regulated current according to the output current, and a voltage and current feedback module 3 for generating a feedback voltage to control the load voltage. The connection and working relationship among the current regulation module 1, the loop control module 2, and the voltage and current feedback module 3 are explained as follows:
the current regulation module 1 has a first output terminal, and outputs an output current through the first output terminal, the output current being obtained by the current regulation module 1 based on a required current of a load. The circuit for implementing the current regulation module may be a circuit for converting resistance value of a resistor, for example, a circuit including a sliding rheostat. Wherein the load may comprise a luminaire, which may be a street lamp. The power of the street lamp is relatively large, such as 80W and 100W, and of course, other powers are possible.
The loop control module 2 has a first input terminal, a second input terminal, and a second output terminal, and is electrically connected to the first output terminal through the first input terminal, and is electrically connected to the load through the second output terminal. The loop control module 2 is configured to output the regulated current after operating the output current, and a specific implementation circuit of the loop control module may be a circuit including an operational amplifier. The load may be an LED lamp.
The voltage and current feedback module 3 has a third output terminal and is electrically connected to the second input terminal through the third output terminal. The voltage and current feedback module 3 is configured to generate a feedback voltage according to a current flowing through the loop control module to control a load voltage, and a specific implementation circuit of the voltage and current feedback module may be a circuit including a feedback optocoupler.
The embodiment of the utility model provides a power supply controller, it includes current regulation module, loop control module and voltage and current feedback module, and current regulation module's first output is connected with loop control module's first input electricity, and voltage and current feedback module's third output is connected with loop control module's second input electricity, and loop control module's second output is connected with the load electricity. The current regulation module is used for regulating output current based on the current of a load and transmitting the output current to the loop control module through a first output end and a first input end; the loop control module is used for outputting the adjusting current to the load through the second output end after the output current is operated; the voltage and current feedback module is used for generating feedback voltage according to the current flowing through the loop control module so as to control the load voltage. Therefore, the embodiment of the utility model provides a power controller is adapted to the load of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
Optionally, the current regulation module 1 described in the above embodiment may be implemented by using the following circuit:
a first implementation circuit, comprising: a first resistive component and a first reference voltage source. As shown in fig. 1, the first resistor assembly includes a first fixed resistor R0 and a sliding resistor VR1, and the first fixed resistor R0 is connected in parallel with the sliding resistor VR 1. The first reference voltage source is connected in parallel with the first resistive element.
Wherein, this first reference voltage source is used for providing electric quantity for first resistance component, and this first reference voltage source specifically can adopt the voltage source among the prior art, and first reference voltage source can select according to the actual demand, the embodiment of the utility model provides a do not specifically prescribe a limit.
Wherein, first definite value resistance R0 is used for preventing the phenomenon of the short circuit from taking place when the resistance of sliding resistance VR1 is zero, and this first definite value resistance R0's resistance can set up according to actual demand, the embodiment of the utility model provides a do not specifically prescribe a limit. And the resistance range of sliding resistance VR1 also can set up according to actual demand, the embodiment of the utility model provides a do not specifically limit.
The embodiment of the utility model provides a through setting up sliding resistance, can be according to the electric current demand adjustment output current of load, circuit structure is simple, easily realizes.
A second implementation circuit, comprising: n resistance components and second reference voltage source, N is the positive integer more than or equal to 1, and N resistance components and second reference voltage source are connected in series. Wherein the content of the first and second substances,
the resistance component comprises an ith constant value resistance, an ith-1 adjusting resistance and an ith-1 switch, wherein the ith-1 adjusting resistance is connected with the ith-1 switch in series, the ith constant value resistance is connected with a branch circuit formed by connecting the ith-1 adjusting resistance and the ith-1 switch in series in parallel, and i is a positive integer greater than or equal to 2.
In an implementation, if i is 2, 3, 4, or 5, the current adjusting module may include: a second resistive component, a third resistive component, a fourth resistive component, and a fifth resistive component. The second resistor assembly, the third resistor assembly, the fourth resistor assembly and the fifth resistor assembly are connected with a second reference voltage source in series. As shown in fig. 1:
the second resistor assembly comprises a second fixed resistor R1, a first adjusting resistor RJ1 and a first switch S1, wherein the first adjusting resistor RJ1 is connected in series with the first switch S1, and the second fixed resistor R1 is connected in parallel with a branch of the series connection of the first adjusting resistor RJ1 and the first switch S1.
The third resistor assembly comprises a third fixed resistor R2, a second adjusting resistor RJ2 and a second switch S2, the second adjusting resistor RJ2 is connected with the second switch S2 in series, and the third fixed resistor R2 is connected with a branch of the second adjusting resistor RJ2 and the second switch S2 in series in parallel.
The fourth resistor assembly comprises a fourth fixed resistor R3, a third adjusting resistor RJ3 and a third switch S3, the third adjusting resistor RJ3 is connected with the third switch S3 in series, and the fourth fixed resistor R3 is connected with a branch of the third adjusting resistor RJ3 and the third switch S3 in series in parallel.
The fifth resistor assembly comprises a fifth fixed resistor R4, a fourth adjusting resistor RJ4 and a fourth switch S4, the fourth adjusting resistor RJ4 is connected in series with the fourth switch S4, and the fifth fixed resistor R4 is connected in parallel with a branch of the series connection of the fourth adjusting resistor RJ4 and the fourth switch S4.
Wherein, the resistance of second fixed value resistance R1, first adjusting resistance RJ1, third fixed value resistance R2, second adjusting resistance RJ2, fourth fixed value resistance R3, third adjusting resistance RJ3, fifth fixed value resistance R4 and fourth adjusting resistance RJ4 can set up according to actual demand, the embodiment of the utility model provides a do not do specifically and restrict.
The embodiment of the utility model provides a through setting up second resistance module, third resistance module, fourth resistance module and fifth resistance module, can realize that accurate calculation obtains accurate output current value according to the accurate output current of adjusting of the electric current demand of load, circuit structure is simple, easily realizes.
The third implementation circuit: the first reference voltage source in the first realizing circuit and the second reference voltage source in the second realizing circuit are the same reference voltage source.
The second reference voltage source is connected in series with the first resistor component in the first realizing circuit and the second resistor component, the third resistor component, the fourth resistor component and the fifth resistor component in the second realizing circuit.
The embodiment of the utility model provides a through setting up first resistance module, second resistance module, third resistance module, fourth resistance module and fifth resistance module, can select the implementation mode of adjustment output current in a flexible way according to the electric current demand of load, circuit structure is simple, and the flexibility is higher.
Optionally, as shown in fig. 1, the loop control module in the foregoing embodiment may include: the circuit comprises a first phase compensation resistor Rfb1, a second phase compensation resistor Rfb2, a bias resistor RC0, a first diode D1, a second diode D2, a constant current loop operational amplifier U1A and a constant voltage loop operational amplifier U1B.
The constant current loop operational amplifier U1A has a first pin and a second pin, the first pin of the constant current loop operational amplifier U1A is a first input terminal, the second pin of the constant current loop operational amplifier U1A is electrically connected to the cathode of the first diode D1 through the first phase compensation resistor Rfb1, and the anode of the first diode D1 is a second input terminal.
The constant voltage loop operational amplifier U1B has a first pin and a second pin, the first pin of the constant voltage loop operational amplifier U1B is electrically connected to the cathode of the second diode D2 through a second phase compensation resistor Rfb2, the anode of the second diode D2 is a second input terminal, and the second pin of the constant voltage loop operational amplifier U1B is electrically connected to the first pin of the constant current loop operational amplifier U1A through a bias resistor RC 0.
The first diode D1 and the second diode D2 are used for isolation control of the constant current loop operational amplifier U1A and the constant voltage loop operational amplifier U1B, so that the constant current loop operational amplifier U1A and the constant voltage loop operational amplifier U1B do not affect each other.
Wherein, the resistance of first phase compensation resistance Rfb1, second phase compensation resistance Rfb2 and offset resistor RC0 can set up according to actual need, the embodiment of the utility model provides a do not specifically limit.
Optionally, as shown in fig. 1, the loop control module in the foregoing embodiment may include: a first voltage sampling resistor RS1, a second voltage sampling resistor RS2 and a third voltage sampling resistor RS 0.
The second pin of the constant voltage loop operational amplifier U1B is grounded through a first voltage sampling resistor RS1, and the second pin of the constant voltage loop operational amplifier U1B is electrically connected to the positive electrode of the load through a second voltage sampling resistor RS2 and a third voltage sampling resistor RS 0.
Wherein, first voltage sampling resistance RS1, second voltage sampling resistance RS2 and third voltage sampling resistance RS 0's resistance can set up according to actual demand, the embodiment of the utility model provides a do not specifically restrict.
The embodiment of the utility model provides a specific working process of electrical source controller 40 can be:
for example, as shown in fig. 1, taking the output constant power of the load to be controlled as 100W as an example, the current requirements of different loads can be achieved by controlling the first switch S1, the second switch S2, the third switch S3 and the fourth switch S4 to be closed or opened, specifically:
the 1 st adjustment is:
when the first switch S1 is turned on, and the second switch S2, the third switch S3 and the fourth switch S4 are turned off, the first reference voltage source generates a voltage Vcs1 at the first input end of the loop control module, the voltage Vcs1 is fed back to the PWM control circuit of the voltage and current feedback module after being operated and amplified by the constant current loop operational amplifier U1A of the loop control module, and the loop control module finally generates an output current Iout 1.
At the same time, the voltage Vcs1 generates a bias voltage to the first voltage sampling resistor RS1 through the bias resistor RC0, and the bias voltage is adjusted through the constant voltage loop operational amplifier U1B of the loop control module, so that the voltage of the output filter module is at most Vout1 (namely Vout1 is equal to LED + minus LED-)
At this time, Vout1 multiplied by Iout1 is 100W.
The 2 nd adjustment is:
when the second switch S2 is closed and the first switch S1, the third switch S3 and the fourth switch S4 are opened, the first reference voltage source generates a voltage Vcs2 at the first input terminal of the loop control module, the voltage Vcs2 is fed back to the PWM control circuit through the constant current loop operational amplifier U1A, and the loop control module finally generates an output current Iout 2.
At the same time, the voltage Vcs2 generates a bias voltage to the first voltage sampling resistor RS1 through the bias resistor RC0, and the bias voltage is adjusted through the constant voltage loop operational amplifier U1B of the loop control module, so that the voltage of the output filter module is at most Vout2 (namely Vout2 is equal to LED + minus LED-)
At this time, the product of Vout2 multiplied by Iout2 is also 100W.
Similarly, the 4-bit switch can have 16 kinds of adjustment in total, that is, 16 kinds of Vout and Iout can be generated by adjustment, but finally Vout and Iout are both 100W, and of course, there is a certain error, which is 5%.
Thus, constant power regulation is achieved.
The embodiment of the utility model provides a power supply controller, it includes current regulation module, loop control module and voltage and current feedback module, and current regulation module's first output is connected with loop control module's first input electricity, and voltage and current feedback module's third output is connected with loop control module's second input electricity, and loop control module's second output is connected with the load electricity. The current regulation module is used for regulating output current based on the current of a load and transmitting the output current to the loop control module through a first output end and a first input end; the loop control module is used for outputting the adjusting current to the load through the second output end after the output current is operated; the voltage and current feedback module is used for generating feedback voltage according to the current flowing through the loop control module so as to control the load voltage. Therefore, the embodiment of the utility model provides a power controller is adapted to the load of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
Optionally, the voltage and current feedback module in the above embodiment may include: the voltage and current feedback unit is used for controlling the voltage at two ends of the load according to the feedback voltage, and the voltage and current feedback unit is provided with a third output end and a third input end and is electrically connected with the second input end through the third output end. The voltage and current control unit has a fourth output terminal and is electrically connected to the third input terminal through the fourth output terminal.
In a specific implementation, the voltage and current control unit may be a PWM control circuit, and the PWM control circuit is a Pulse Width Modulation (PWM).
In a specific implementation, as shown in fig. 1, the voltage and current feedback unit may include: the feedback optical coupler U2, this feedback optical coupler U2 have first pin, second pin, third pin and fourth pin, and the first pin of feedback optical coupler U2 is connected with the power electricity, and the second pin of feedback optical coupler U2 is the third output, and the third pin of feedback optical coupler U2 and the fourth pin of feedback optical coupler U2 are the third input.
The feedback optocoupler U2 is mainly used for maintaining stable work of output current or stable work of output maximum voltage, and the working process of the feedback optocoupler U2 is as follows:
assuming that the 1 st regulation is adopted, the output current Iout1 is generated after the 1 st regulation is completed.
Since the ambient temperature suddenly rises or the resistance value Rled of the load LED becomes small, the load voltage suddenly becomes low, and at this time, the voltage Vout1 of the output filter module does not have time to suddenly change (because there is an electrolytic capacitor inside the output filter module, the property of the electrolytic capacitor is that the voltage cannot suddenly change), and at this time, the output current is equal to Vout1 divided by Rled. If Vout1 is constant and Rled becomes small, the output current Iout will become large. When the output current Iout becomes larger, a larger voltage is generated to the second output end of the constant current loop operational amplifier U1A of the loop control module when the output current Iout flows through the output current sampling resistor RIsense, and at this time, the voltage of the second output end of the constant current loop operational amplifier U1A is larger than the voltage of the first input end, so that the output of the constant current loop operational amplifier U1A becomes lower immediately, the current flowing through the feedback optocoupler U2 increases immediately, the duty ratio of the PWM control circuit decreases immediately, and finally, the abrupt change Iout becomes lower through the isolation transformer, thereby realizing stable output.
As shown in fig. 2, a circuit 100 for connecting a load according to an embodiment of the present invention may include: the PFC power factor correction circuit comprises a PFC power factor correction circuit 10, an isolation transformer 20, an output filtering module 30, a power controller 40 and a sampling resistor RIsense. The output filter module 30, the load and the sampling resistor RIsense are connected in series, the isolation transformer 20 is respectively electrically connected with the output filter module 30 and the voltage and current feedback module 3 of the power controller 40, the voltage and current feedback module 3 is electrically connected with the PFC power factor correction circuit 10, and AC alternating current is input into the PFC power factor correction circuit 10.
Wherein, the power controller 40 adopts the power controller 40 described in the above embodiment of the present invention, and as shown in fig. 1, the power controller 40 may include: a current regulation module 1 for regulating the output current based on the required current of the load, a loop control module 2 for outputting a regulated current according to the output current, and a voltage and current feedback module 3 for generating a feedback voltage to control the load voltage. The connection and working relationship among the current regulation module 1, the loop control module 2, and the voltage and current feedback module 3 are explained as follows:
the current regulation module 1 has a first output terminal, and outputs an output current through the first output terminal, the output current being obtained by the current regulation module 1 based on a required current of a load. The circuit for implementing the current regulation module may be a circuit for converting resistance value of a resistor, for example, a circuit including a sliding rheostat.
The loop control module 2 has a first input terminal, a second input terminal, and a second output terminal, and is electrically connected to the first output terminal through the first input terminal, and is electrically connected to the load through the second output terminal. The loop control module 2 is configured to output the regulated current after operating the output current, and a specific implementation circuit of the loop control module may be a circuit including an operational amplifier. The load may be an LED lamp.
The voltage and current feedback module 3 has a third output terminal and is electrically connected to the second input terminal through the third output terminal. The voltage and current feedback module 3 is configured to generate a feedback voltage according to a current flowing through the loop control module to control a load voltage, and a specific implementation circuit of the voltage and current feedback module may be a circuit including a feedback optocoupler.
The embodiment of the utility model provides a power supply controller, it includes current regulation module, loop control module and voltage and current feedback module, and current regulation module's first output is connected with loop control module's first input electricity, and voltage and current feedback module's third output is connected with loop control module's second input electricity, and loop control module's second output is connected with the load electricity. The current regulation module is used for regulating output current based on the current of a load and transmitting the output current to the loop control module through a first output end and a first input end; the loop control module is used for outputting the adjusting current to the load through the second output end after the output current is operated; the voltage and current feedback module is used for generating feedback voltage according to the current flowing through the loop control module so as to control the load voltage. Therefore, the embodiment of the utility model provides a power controller is adapted to the load of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
Of course, this power controller 40 may also include other electrical devices, see the relevant content in the embodiment of the present invention specifically, which is not described again in the embodiment of the present invention.
As shown in fig. 3, a lamp with a power supply controller provided by an embodiment of the present invention may include: a lamp body 200 and a circuit 100 for connecting a load as described in the above embodiments; wherein, the load is the lamp body 200.
In particular, the light fixture may include a street light. The power of the street lamp is relatively large, such as 80W and 100W, and of course, other powers are possible.
An embodiment of the utility model provides a lamps and lanterns have power supply controller, and this power supply controller includes current regulation module, loop control module and voltage and current feedback module, and current regulation module's first output is connected with loop control module's first input electricity, and voltage and current feedback module's third output is connected with loop control module's second input electricity, and loop control module's second output is connected with lamps and lanterns electricity. The current adjusting module is used for adjusting output current based on the current of the lamp and transmitting the output current to the loop control module through the first output end and the first input end; the loop control module is used for outputting adjusting current to the lamp through the second output end after the output current is calculated; the voltage and current feedback module is used for generating feedback voltage according to the current flowing through the loop control module so as to control the voltage of the lamp. Therefore, the embodiment of the utility model provides a power controller is adapted to the lamps and lanterns of the nevertheless different electric current demands of same power level, has the adjustability, and circuit structure is simple, and the cost is lower.
It should be apparent to those skilled in the art that while the preferred embodiments of the present invention have been described, additional variations and modifications to these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A power supply controller, comprising:
a current regulation module for regulating an output current based on a desired current of a load, having a first output terminal, and outputting the output current through the first output terminal;
the loop control module is used for outputting and adjusting current according to the output current, is provided with a first input end, a second input end and a second output end, is electrically connected with the first output end through the first input end, and is electrically connected with the load through the second output end;
the voltage and current feedback module is used for generating feedback voltage to control load voltage, is provided with a third output end and is electrically connected with the second input end through the third output end.
2. The power supply controller of claim 1, wherein the current regulation module comprises:
the first resistor assembly comprises a first fixed-value resistor and a sliding resistor, and the first fixed-value resistor is connected with the sliding resistor in parallel;
a first reference voltage source connected in parallel with the first resistive component.
3. The power supply controller of claim 2, wherein the current regulation module comprises: the circuit comprises N ith resistance components and a second reference voltage source, wherein N is a positive integer greater than or equal to 1, and the N ith resistance components are connected with the second reference voltage source in series;
the ith resistance component comprises an ith fixed value resistor, an ith-1 adjusting resistor and an ith-1 switch, wherein the ith-1 adjusting resistor is connected with the ith-1 switch in series, the ith fixed value resistor is connected with a branch circuit formed by connecting the ith-1 adjusting resistor and the ith-1 switch in series in parallel, and i is a positive integer greater than or equal to 2.
4. The power supply controller of claim 3, wherein if i is 2, 3, 4, and 5, the current regulation module comprises:
the second resistor assembly comprises a second fixed value resistor, a first adjusting resistor and a first switch, wherein the first adjusting resistor is connected with the first switch in series, and the second fixed value resistor is connected with a branch circuit formed by connecting the first adjusting resistor and the first switch in series in parallel;
the third resistor assembly comprises a third fixed-value resistor, a second adjusting resistor and a second switch, the second adjusting resistor is connected with the second switch in series, and the third fixed-value resistor is connected with a branch circuit formed by connecting the second adjusting resistor and the second switch in series in parallel;
the fourth resistor assembly comprises a fourth fixed-value resistor, a third adjusting resistor and a third switch, the third adjusting resistor is connected with the third switch in series, and the fourth fixed-value resistor is connected with a branch of the third adjusting resistor and the third switch in series in parallel;
the fifth resistor assembly comprises a fifth fixed-value resistor, a fourth adjusting resistor and a fourth switch, the fourth adjusting resistor is connected with the fourth switch in series, and the fifth fixed-value resistor is connected with a branch circuit formed by connecting the fourth adjusting resistor and the fourth switch in series in parallel;
the second reference voltage source is connected in series with the second, third, fourth, and fifth resistive components.
5. The power supply controller of claim 4, wherein the first reference voltage source and the second reference voltage source are the same reference voltage source;
the second reference voltage source is connected in series with the first resistive element, the second resistive element, the third resistive element, the fourth resistive element, and the fifth resistive element.
6. The power supply controller of claim 1, wherein the loop control module comprises: the circuit comprises a first phase compensation resistor, a second phase compensation resistor, a bias resistor, a first diode, a second diode, a constant current loop operational amplifier and a constant voltage loop operational amplifier;
the constant current loop operational amplifier is provided with a first pin and a second pin, the first pin of the constant current loop operational amplifier is the first input end, the second pin of the constant current loop operational amplifier is electrically connected with the cathode of the first diode through the first phase compensation resistor, and the anode of the first diode is the second input end;
the constant-voltage loop operational amplifier is provided with a first pin and a second pin, the first pin of the constant-voltage loop operational amplifier is electrically connected with the cathode of the second diode through the second phase compensation resistor, the anode of the second diode is the second input end, and the second pin of the constant-voltage loop operational amplifier is electrically connected with the first pin of the constant-current loop operational amplifier through the bias resistor.
7. The power supply controller of claim 6, wherein the loop control module comprises: the voltage sampling circuit comprises a first voltage sampling resistor, a second voltage sampling resistor and a third voltage sampling resistor;
the second pin of the constant voltage ring operational amplifier is grounded through the first voltage sampling resistor, and the second pin of the constant voltage ring operational amplifier is electrically connected with the anode of the load through the second voltage sampling resistor and the third voltage sampling resistor.
8. The power supply controller of claim 1, wherein the voltage and current feedback module comprises:
a voltage and current feedback unit for generating a feedback voltage according to the current flowing through the loop control module, having a third output terminal and a third input terminal, and electrically connected to the second input terminal through the third output terminal;
and the voltage and current control unit is used for controlling the voltage at the two ends of the load according to the feedback voltage, is provided with a fourth output end, and is electrically connected with the third input end through the fourth output end.
9. The power supply controller of claim 8, wherein the voltage and current feedback unit comprises:
the feedback optical coupler is provided with a first pin, a second pin, a third pin and a fourth pin, the first pin of the feedback optical coupler is electrically connected with a power supply, the second pin of the feedback optical coupler is the third output end, and the third pin of the feedback optical coupler and the fourth pin of the feedback optical coupler are the third input end.
10. The power supply controller of claim 9, wherein the voltage and current control unit is a PWM control circuit.
11. A circuit for connecting a load, comprising: the PFC power factor correction circuit comprises a PFC power factor correction circuit, an isolation transformer, a power supply controller, an output filtering module and a sampling resistor; wherein the content of the first and second substances,
the power supply controller adopts the power supply controller of any one of the claims 1-10;
the PFC power factor correction circuit is electrically connected with a voltage and current feedback module of the power controller, the voltage and current feedback module is electrically connected with the isolation transformer, the isolation transformer is electrically connected with the output filtering module, and the output filtering module is connected with the sampling resistor and the load in series.
12. A lamp having a power supply controller, comprising a lamp body and a circuit for connecting a load as claimed in claim 11 above; wherein the load is the lamp body.
13. The light fixture of claim 12, wherein the light fixture comprises a street light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920234002.5U CN209845377U (en) | 2019-02-22 | 2019-02-22 | Power supply controller, circuit for connecting load and lamp |
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| CN201920234002.5U CN209845377U (en) | 2019-02-22 | 2019-02-22 | Power supply controller, circuit for connecting load and lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862661A (en) * | 2019-02-22 | 2019-06-07 | 欧普照明股份有限公司 | A kind of power-supply controller of electric, connection load circuit and lamps and lanterns |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862661A (en) * | 2019-02-22 | 2019-06-07 | 欧普照明股份有限公司 | A kind of power-supply controller of electric, connection load circuit and lamps and lanterns |
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