CN101442215A - Power feeding device, power supply method using the device and electronic equipment - Google Patents
Power feeding device, power supply method using the device and electronic equipment Download PDFInfo
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- CN101442215A CN101442215A CNA2008102156057A CN200810215605A CN101442215A CN 101442215 A CN101442215 A CN 101442215A CN A2008102156057 A CNA2008102156057 A CN A2008102156057A CN 200810215605 A CN200810215605 A CN 200810215605A CN 101442215 A CN101442215 A CN 101442215A
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Abstract
The embodiment of the invention provides a power supply device, a power supply method realized through the same, and an electronic device. The method provided by the embodiment of the invention comprises the following steps: when a power supply circuit supplies power to a protected circuit, the power supply circuit charges an energy storage circuit, and when the power supply circuit is low in power or is powered off, the energy storage circuit utilizes the own electric energy storage to supply power to the protected circuit. A device provided by the embodiment of the invention comprises the power supply circuit and the energy storage circuit. The embodiment of the invention has the advantages of ensuring that the protected circuit is always in a working state, lowering the design complexity of a chip circuit and reducing cost for chips.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of electric supply installation, utilize the method for supplying power to and the electronic equipment of its realization.
Background technology
In current electronic equipment, the part of module of some equipment need keep stable operating state always, such as needing a holding time counter (RTC in the computer, Real Time Clock) module, no matter initiatively whether other module of computer power down or passive power down, the RTC module must be worked on all-the-time stable ground, like this, when computer when start next time, the RTC module still can provide precise time for computer, that is to say that other module of computer still can get access to precise time from the RTC module.Similarly, as computer, need the situation of RTC module also to comprise: household electrical appliance timing start-up or shutdown, mobile phone is changed battery, or the like, all need RTC module continuous firing, precise time is provided.
In addition, if there be the static memory module or the configuration register module of preserving significant data in the equipment, the data of static memory module or configuration register module can not the phenomenon of loss of data or error in data occur owing to device power, electricity or power down down.
Mentioned above such as the such special module of RTC module, static memory module and configuration register module (being called protected circuit), need safe and reliable power management scheme to guarantee that this generic module can work reliable and stablely.Whether other module of tube apparatus or equipment does not power on, descends electricity or unexpected power down, and this generic module must have stable voltage to supply with, and can continue the work of long period.
A kind of prior art that is used for the power management of protected circuit is to adopt built-in power administration module (PMU, Power Mangement Unit).One-board power supply and battery supply provide power supply to built-in PMU, and built-in PMU carries out detection of power loss and power supply and switches, by detection of power loss module and power supply handover module and to protected circuit supply.Built-in PMU also has one second detection of power loss module, exports isolation control signal to protected circuit by the second detection of power loss module.
In realizing process of the present invention; the inventor finds that there is following problem at least in prior art: be example with the power-down conditions; a kind of situation of power down is to change battery; in the process of battery altering, safety for the purpose of, need make under the veneer; like this; one-board power supply and battery supply can't be given built-in PMU power supply simultaneously, and PMU also just can't and carry out isolated controlling for protected circuit supply, and protected circuit can't keep stable operating state.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of electric supply installation, has utilized the method for supplying power to and the electronic equipment of its realization, to solve the problem that prior art can't make the stable operating state of protected circuit maintenance.
A kind of method to chip power supply, described method comprises:
When power supply circuits when protected circuit provides power supply, described power supply circuits charge to accumulator;
When under the described power supply circuits when electricity or power down, described accumulator utilizes the electric energy of self deposit to continue to provide power supply to protected circuit.
A kind of device to chip power supply, described device comprises:
Power supply circuits are used for providing power supply to protected circuit; Charge to accumulator;
Accumulator is used for reserve power; When under the described power supply circuits when electricity or power down, utilize the electric energy of self deposit to continue to provide power supply to protected circuit.
A kind of electronic equipment, described electronic equipment comprises electric supply installation, described electric supply installation comprises:
Power supply circuits are used for providing power supply to protected circuit; Charge to accumulator;
Accumulator is used for reserve power, when under the described power supply circuits when electricity or power down, utilizes the electric energy of self deposit to continue to provide power supply to protected circuit.
As seen; in method provided by the invention, device and electronic equipment; when power supply circuits can't provide power supply for protected circuit; accumulator utilizes the energy storage of self; can it be worked on for protected circuit continues to provide power supply, thereby guarantee that protected circuit is in running order all the time; and accumulator provides more stable voltage for protected circuit.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the method flow diagram of the embodiment of the invention;
Fig. 2 is the structure drawing of device of the embodiment of the invention;
Fig. 3 is an embodiment of the invention device instantiation structure chart;
Fig. 4 is battery power supply switch circuit circuit diagram when chargeable;
Fig. 5 is battery power supply switch circuit circuit diagram when not chargeable;
Fig. 6 produces circuit figure for a reference source;
Fig. 7 is the LDO circuit diagram;
Fig. 8 is the power-fail detection circuit circuit diagram;
Fig. 9 is an embodiment of the invention device application example structure chart;
The electronic devices structure figure that Figure 10 provides for the embodiment of the invention.
Embodiment
For above-mentioned purpose, the feature and advantage that make the embodiment of the invention can become apparent more, the embodiment of the invention is described in further detail below in conjunction with the drawings and specific embodiments.
Be elaborated below in conjunction with embodiment and accompanying drawing.
Please refer to Fig. 1, be the method flow diagram of the embodiment of the invention, can comprise:
Step 101: when power supply circuits when protected circuit provides power supply, described power supply circuits charge to accumulator.
Step 102: when under the described power supply circuits when electricity or power down, described accumulator utilizes the electric energy of self deposit to continue to provide power supply to protected circuit.
Below in conjunction with specific embodiment each step shown in Figure 1 is elaborated.In an embodiment, can may further comprise the steps:
A1: provide power supply to power supply switch circuit.
Power supply switch circuit is positioned at the outside of protected circuit place chip.Under the normal condition, one-board power supply provides power supply to power supply switch circuit, and when electricity under the veneer or power down, button cell provides power supply to power supply switch circuit.
A2: power supply switch circuit provides power supply to voltage regulator circuit and power-fail detection circuit.
Voltage regulator circuit and power-fail detection circuit are positioned at the inside of protected circuit place chip.Voltage regulator circuit comprises benchmark source generating circuit BANDGAP and voltage stabilizing transforming circuit LDO.Power supply switch circuit provides power supply to benchmark source generating circuit and voltage stabilizing transforming circuit; the benchmark source generating circuit produces reference voltage V ref; and export reference voltage V ref to the voltage stabilizing transforming circuit; the voltage stabilizing transforming circuit carries out voltage stabilizing with reference voltage V ref; and, reference voltage V ref is transformed to the operating voltage that protected circuit needs according to the actual needs of protected circuit.
In actual applications, the voltage stabilizing transforming circuit is an option.
The benchmark source generating circuit also exports reference voltage V ref to power-fail detection circuit, be used for chip in the voltage of other circuit compare, when under other circuit in the chip when electricity or power down, power-fail detection circuit is to protected circuit output isolation control signal.
Voltage V5 that the detection of power loss module is relatively imported (V5 is meant the operating voltage of protected circuit place other module of chip internal) and Vref; as V5 during less than Vref; the detection of power loss module is to protected circuit output isolation control signal (ISO; Isolation Control Signal); Singalx is isolated; as V5 during, Singalx is not isolated greater than Vref.
A3: voltage regulator circuit is exported stable voltage V4, and provides V4 to voltage-stabilizing protection electric capacity and protected circuit.
Voltage-stabilizing protection electric capacity is positioned at the outside of protected circuit place chip; can further stablize V4; the more important thing is; voltage-stabilizing protection electric capacity can energy storage; in case electricity or power down down takes place in power supply switch circuit; voltage-stabilizing protection electric capacity just can work on protected circuit for protected circuit provides power supply, thereby reaches the purpose of the protected circuit of protection.
From the description of the inventive method embodiment; as can be seen; because voltage-stabilizing protection electric capacity can stored energy; when electricity under the power supply switch circuit or power down; for example under one-board power supply; change under the situation of battery, voltage-stabilizing protection electric capacity just can work on them for protected circuit provides energy.Thereby guaranteed that protected circuit is in running order all the time.In addition; because power supply switch circuit is positioned at the outside of protected circuit place chip; so; in the circuit design of the chip at protected circuit place; reduced this part of power supply switch circuit, so, for the chip at protected circuit place; design complexities reduces, and can reduce cost.
Please refer to Fig. 2, show the structure drawing of device of the embodiment of the invention, can comprise:
Power supply circuits 201: be used for providing power supply to protected circuit; Charge to accumulator.
Accumulator 202: be used for reserve power,, utilize the electric energy of self deposit to continue to provide power supply to protected circuit when under the described power supply circuits when electricity or power down.
Below in conjunction with specific embodiment and accompanying drawing device shown in Figure 2 is elaborated.
Please refer to Fig. 3, be specific embodiment of the invention structure chart, power supply circuits 201 can comprise:
Power supply switch circuit 301: be used for the switching between one-board power supply V1 and the battery supply V2, and output V3 is to voltage regulator circuit and power-fail detection circuit.
Voltage regulator circuit 303: be used for V3 according to input; produce voltage and reference voltage V ref for protected circuit working; to export voltage-stabilizing protection electric capacity and protected circuit for the voltage of protected circuit working to, ref exports power-fail detection circuit to reference voltage V.
Wherein, power supply switch circuit can be positioned at the outside of protected circuit place chip, and voltage regulator circuit and power-fail detection circuit can be positioned at the inside of protected circuit place chip.
Voltage regulator circuit can comprise:
Benchmark source generating circuit 304: be used to produce reference voltage V ref, and export reference voltage V ref to voltage stabilizing transforming circuit and power-fail detection circuit.
Voltage stabilizing transforming circuit 305: be used for the reference voltage V ref of input is carried out voltage stabilizing and transformation, produce voltage, and will export voltage-stabilizing protection electric capacity and protected circuit to for the voltage of protected circuit working for protected circuit working.
The voltage stabilizing transforming circuit is an option, and when not comprising the voltage stabilizing transforming circuit in the voltage regulator circuit, the benchmark source generating circuit exports reference voltage V ref to voltage-stabilizing protection electric capacity, protected circuit and power-fail detection circuit.
The type of accumulator 202 can comprise voltage-stabilizing protection electric capacity, wherein:
Voltage-stabilizing protection electric capacity 302: be used for when power supply switch circuit is powered, charging, when the power supply switch circuit no-output, for protected circuit provides power supply.
Voltage-stabilizing protection electric capacity is positioned on the veneer, and can be in the outside of protected circuit place chip.
Structure chart shown in Figure 3 also comprises:
Power-fail detection circuit 306: be used for power supply, provide detection of power loss protected circuit according to other circuit on the chip at reference voltage V ref that imports and protected circuit place, and to protected circuit output isolation control signal.Below each module of Fig. 3 is elaborated.
For power supply switch circuit, whether chargeable according to battery, power supply switch circuit can be divided into two types, please refer to Fig. 4, be battery power supply switch circuit schematic diagram when chargeable, power supply switch circuit can comprise a diode D1, veneer voltage V1 and cell voltage V2, and battery can adopt button cell.
Please refer to Fig. 5, be battery power supply switch circuit schematic diagram when not chargeable, power supply switch circuit can comprise two diode DI and D2, veneer voltage V1 and cell voltage V2, and same, battery can adopt button cell.
Usually, the voltage range of button cell is 3.6V and 2.0V, and diode is selected the very little diode of pressure drop for use, and one-board power supply is generally 3.3V.When (veneer voltage-diode drop)〉during button cell voltage, V3 is output as the value that veneer voltage deducts diode drop, and the voltage of button cell just can not be consumed, for example, suppose that diode drop is 0.2V, button cell voltage is 3.0V, 3.3-0.2=3.1,3.1〉3.0, so, the voltage of V3 output 3.1V, and the voltage of button cell can not be consumed.If electricity or power down under the veneer, V3 will switch to the voltage of button cell, the magnitude of voltage of output 3.0V.Therefore, under veneer, under the situation of electricity or power down, guaranteed that V3 still has voltage output.
For voltage regulator circuit, because in actual application environment, voltage V3 might fluctuate, generally comprise: the voltage fluctuation of veneer itself, electricity or power down under the veneer, the replacing of button cell, power supply switch circuit switches to the process of button cell voltage by veneer voltage, or the like.If protected circuit require voltage stability higher, so, the voltage V3 of power supply switch circuit output just can not directly provide voltage for protected circuit.In addition, if veneer voltage is 3.3V, and the voltage of protected circuit requirement is 1.2V, so, also need the output voltage V 3 of power supply switch circuit is carried out transformation.
As long as from the voltage V3 of the power supply switch circuit output output voltage V 4 greater than voltage regulator circuit, voltage regulator circuit just can be exported stable voltage V4 to voltage-stabilizing protection electric capacity, detection of power loss module and protected circuit.
Please refer to Fig. 6, for a reference source produces circuit figure.
Reference power supply produces circuit can be divided into four parts, is respectively: band-gap reference core BandGapCore, band-gap reference amplifier BandGap Amp, start-up circuit Startup Circuitry, buffer Buffer.Startup Circuitry is used for starting BandGap Core and BandGap Amp, BandGapCore and BandGap Amp cooperate and produce one not with the reference voltage V ref1 of voltage and variations in temperature, Buffer with the Vref1 transformation after, the reference voltage value Vref of output expectation.
The benchmark source generating circuit can produce stable benchmark voltage, and reference voltage is not with input voltage or other factors (for example: temperature etc.) change.
In addition, voltage regulator circuit can also comprise voltage stabilizing transforming circuit LDO, please refer to Fig. 7, is the LDO circuit diagram.
LDO adopts tertiary structure, and the first order is used collapsible cascade (foldedcascade) amplifier architecture of high-gain, and second utmost point adopts the common drain structure, third level output burning voltage V4.Wherein, first utmost point is used for reference voltage V 4 is amplified, but the driving of the output voltage of first utmost point does not often satisfy the demands, the second level is used to isolate first utmost point and the third level, this is because the output impedance of first utmost point is very big, if directly link to each other with the third level, can cause the circuit instability.The third level is used to increase the driving of the voltage that receives.In addition, suitably strengthen partial electric current, can drive the efferent duct of the third level better.
Wherein, LDO is an option, can select according to actual needs.
For voltage-stabilizing protection electric capacity, it is input as the output voltage V 4 of power adjustment module, and the effect of voltage-stabilizing protection electric capacity is to stablize V4 and energy reserve.When electricity under the power supply switch circuit or power down, when for example changing battery, voltage-stabilizing protection electric capacity can provide voltage for protected circuit, guarantees that protected circuit can operate as normal.The capacitance of voltage-stabilizing protection electric capacity is chosen and need be decided according to the power consumption of protected circuit.
Voltage-stabilizing protection electric capacity provides the duration of power supply for protected circuit; can draw by following method: suppose that voltage-stabilizing protection capacitance discharges electric current is 5uA; capacitance is 5000uF; voltage from the time that 1.2V drops to 1.0V and needs be T; T=5000u * (1.2-0.2)/5u=200s then, promptly voltage-stabilizing protection electric capacity can provide the duration 200s of power supply for protected circuit.
Those of ordinary skills know, on the market common electrochemical capacitor almost half can reach thousand uF ranks, in embodiments of the present invention, can select a plurality of thousand other electrochemical capacitors of uF level to realize the purpose of energy storage.If circuit power consumption is bigger, then can adopt farad capacitor, the farad capacitor value can reach the F rank.
For the detection of power loss module; chip internal at protected circuit place; exist the signal Singalx of other module to be input to protected circuit; when under these modules in the chip at protected circuit place when electricity or power down; the state that is input to the signal Singalx of protected circuit can become don't-know state; like this, will the work of protected circuit be exerted an influence.So, under these modules of the chip at protected circuit place, when electricity or power down, Singalx need be isolated.
Isolate Singalx can adopt with door or or door realize.After electricity or power down under other module of the chip at protected circuit place; will with door or or the door close; Singalx just can not influence the operate as normal of protected circuit, after other module of the chip at protected circuit place powers on, again will with door or or door open.
Please refer to Fig. 8, be the circuit diagram of power-fail detection circuit.
Circuit is a hysteresis comparator, by the magnitude of voltage of other module in the chip at benchmark voltage Vref and protected circuit place, decides the state of the control signal of isolation.Electricity or power down under other module in the chip at protected circuit place; when magnitude of voltage was lower than Vref, isolation control signal was an effective status, and other module powers in the chip at protected circuit place; magnitude of voltage is not less than Vref, and isolation control signal is a disarmed state.
Because there is the situation of fluctuation in the voltage of other module in the chip at protected circuit place, but the detection of power loss module can not fluctuate because of the fluctuation of other module thereupon, therefore, hysteresis comparator needs a threshold value scope.If the normal working voltage of the chip at protected circuit place is 1.2V; Lower Threshold then can be set be respectively 0.9V and 0.8V; shake when the hysteresis comparator of 100mv is used for preventing other module power-on and power-off in the chip at protected circuit place; when voltage is between 0.9V and 0.8V; do not start isolated controlling.
Protected circuit can not be subjected to the veneer change in voltage and change the influence of button cell, and typical circuit can be RTC circuit or static memory circuit, or the like.
Describe below in conjunction with the device of an application example the embodiment of the invention.
Please refer to Fig. 9, be application example installation drawing of the present invention, HXXXX is a chip that is used to the field of monitoring; there is a RTC in this chip; and PMU, RTC is protected circuit, the function of PMU has comprised the function of power adjustment module among Fig. 3 and detection of power loss module.
RTC needs to keep normal operating conditions under the situation of veneer power down and battery altering.RTC needs a 32K clock that works alone, and is used for internal clocking, clock equally must be under the situation of veneer power down or battery altering operate as normal, can not be because of veneer power down or battery altering generation timing error.One-board power supply 3.3V, the operating voltage of RTC is 1.2V, voltage stabilized accuracy scope is ± 5%.And after other module power down in this chip, the signal that other module must be inputed to RTC is isolated.In addition, for being distributed in outdoor monitor terminal, owing to be not easy to often change battery, this just requires to provide the safe and reliable electric power system that a cover can long-term work to RTC.
HXXXX has adopted device provided by the invention, and by single-board testing, HXXXX can or change operate as normal under the situation of battery in the veneer power down, has satisfied power demands well.
As can be seen, carry out energy storage, when the power supply switch circuit power down, still can by detection of power loss and isolated controlling protection, guarantee that protected circuit all the time can operate as normal simultaneously for protected circuit provides voltage by voltage-stabilizing protection electric capacity.In addition, device provided by the invention places the chip exterior at protected circuit place with power supply switch circuit, therefore, has reduced the design complexities of chip.
The embodiment of the invention also provides a kind of electronic equipment, and this electronic equipment comprises the electric supply installation that apparatus of the present invention embodiment provides, and this electric supply installation comprises:
Wherein, the description of power supply circuits and accumulator is identical with apparatus of the present invention embodiment, specifically sees also the description of apparatus of the present invention embodiment.
Electronic equipment with electric supply installation that apparatus of the present invention embodiment provides can be: computer, router, switch, base station or portable terminal etc.
Because the electric supply installation that the embodiment of the invention provides can be the protected circuit continued power in the electronic equipment, so the protected circuit in the electronic equipment can keep stable operating state when electricity under the electronic equipment or power down.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
At last, also need to prove, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
More than to a kind of electric supply installation provided by the present invention, utilize the method for supplying power to of its realization and electronic equipment to be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1, a kind of method to chip power supply is characterized in that, described method comprises:
When power supply circuits when protected circuit provides power supply, described power supply circuits charge to accumulator;
When under the described power supply circuits when electricity or power down, described accumulator utilizes the electric energy of self deposit to continue to provide power supply to protected circuit.
2, method according to claim 1 is characterized in that, power supply switch circuit is positioned at the outside of described protected circuit place chip, and voltage regulator circuit is positioned at the inside of described chip, and described power supply circuits provide power supply to comprise to protected circuit:
Power supply switch circuit provides power supply to voltage regulator circuit;
The power supply that described voltage regulator circuit provides according to described power supply switch circuit produces the voltage for protected circuit working;
Described voltage regulator circuit exports described voltage to described accumulator and described protected circuit.
3, method according to claim 2 is characterized in that, the voltage that the power supply that described voltage regulator circuit provides according to described power supply switch circuit produces for protected circuit working comprises:
The power supply that the benchmark source generating circuit provides according to described power supply switch circuit produces the reference voltage for described protected circuit working;
Described voltage regulator circuit exports described voltage to described accumulator and described protected circuit comprises:
Described benchmark source generating circuit exports the reference voltage of the protected circuit working of described confession to described accumulator and described protected circuit.
4, method according to claim 2 is characterized in that, the voltage that the power supply that described voltage regulator circuit provides according to described power supply switch circuit produces for protected circuit working comprises:
The benchmark source generating circuit produces reference voltage according to the power supply that described power supply switch circuit provides;
The voltage stabilizing transforming circuit receives the described reference voltage of described benchmark source generating circuit output, and the power supply that provides according to described power supply switch circuit carries out voltage stabilizing and/or transformation to described reference voltage, produces the voltage for described protected circuit working;
Described voltage regulator circuit exports described voltage to described accumulator and described protected circuit comprises:
Described voltage stabilizing transforming circuit will export described accumulator and described protected circuit for the voltage of described protected circuit working to.
5, method according to claim 1 is characterized in that, described method also comprises:
When under the circuit except that protected circuit of described chip when electricity or power down, be used to provide the circuit of isolation control signal to provide isolation control signal to described protected circuit.
6, a kind of device to chip power supply is characterized in that, described device comprises:
Power supply circuits are used for providing power supply to protected circuit; Charge to accumulator;
Accumulator is used for reserve power; When under the described power supply circuits when electricity or power down, utilize the electric energy of self deposit to continue to provide power supply to protected circuit.
7, device according to claim 5 is characterized in that, the type of described accumulator comprises: voltage-stabilizing protection electric capacity.
According to the described device of claim 5, it is characterized in that 8, described power supply circuits comprise:
Power supply switch circuit is used for providing power supply to voltage regulator circuit, and described power supply switch circuit is positioned at the chip exterior at described protected circuit place, and described voltage regulator circuit and power-fail detection circuit are positioned on the described chip;
Voltage regulator circuit, the power supply that is used for providing according to described power supply switch circuit produces the voltage for protected circuit working, exports described voltage to described accumulator and protected circuit.
9, device according to claim 8 is characterized in that, described voltage regulator circuit comprises:
The benchmark source generating circuit power supply that provides according to described power supply switch circuit is provided produces reference voltage for described protected circuit working, exports the reference voltage of the protected circuit working of described confession to described accumulator and described protected circuit.
10, device according to claim 8 is characterized in that, described voltage regulator circuit comprises:
The benchmark source generating circuit, the power supply that is used for providing according to described power supply switch circuit produces reference voltage;
The voltage stabilizing transforming circuit; be used to receive the described reference voltage of described benchmark source generating circuit output; the power supply that provides according to described power supply switch circuit carries out voltage stabilizing and/or transformation to described reference voltage; produce voltage, will export described accumulator and described protected circuit to for the voltage of described protected circuit working for described protected circuit working.
11, device according to claim 8 is characterized in that, described power supply switch circuit comprises:
At least one diode is arranged between one-board power supply and the battery supply;
Battery supply, its type comprise the power supply of rechargeable battery or the power supply of rechargeable battery not.
12, a kind of electronic equipment is characterized in that, described electronic equipment comprises electric supply installation, and described electric supply installation comprises:
Power supply circuits are used for providing power supply to protected circuit; Charge to accumulator;
Accumulator is used for reserve power, when under the described power supply circuits when electricity or power down, utilizes the electric energy of self deposit to continue to provide power supply to protected circuit.
13, electronic equipment according to claim 12 is characterized in that, described type of electronic device comprises: computer, router, switch, base station or portable terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102156057A CN101442215A (en) | 2008-09-04 | 2008-09-04 | Power feeding device, power supply method using the device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008102156057A CN101442215A (en) | 2008-09-04 | 2008-09-04 | Power feeding device, power supply method using the device and electronic equipment |
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| CNA2008102156057A Pending CN101442215A (en) | 2008-09-04 | 2008-09-04 | Power feeding device, power supply method using the device and electronic equipment |
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| CN101621569B (en) * | 2009-07-24 | 2012-01-25 | 上海华勤通讯技术有限公司 | Uninterruptedly powered handset and use method |
| WO2011026270A1 (en) * | 2009-09-02 | 2011-03-10 | 中兴通讯股份有限公司 | Power-down protection method and system, power controller for the communication device |
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| CN103246070B (en) * | 2013-04-28 | 2015-06-03 | 青岛歌尔声学科技有限公司 | 3D spectacles with gesture control function and gesture control method thereof |
| WO2015192724A1 (en) * | 2014-06-17 | 2015-12-23 | 华为技术有限公司 | On-chip power supply network |
| CN110959241A (en) * | 2018-10-30 | 2020-04-03 | 深圳市大疆创新科技有限公司 | Control method of unmanned aerial vehicle, unmanned aerial vehicle and machine-readable storage medium |
| WO2020087309A1 (en) * | 2018-10-30 | 2020-05-07 | 深圳市大疆创新科技有限公司 | Control method for unmanned aerial vehicle, unmanned aerial vehicle, and machine readable storage medium |
| CN110959241B (en) * | 2018-10-30 | 2022-04-08 | 深圳市大疆创新科技有限公司 | Control method of unmanned aerial vehicle, unmanned aerial vehicle and machine-readable storage medium |
| CN111987754A (en) * | 2019-05-24 | 2020-11-24 | 凹凸电子（武汉）有限公司 | Mobile device and control method for supplying power to load |
| WO2021134216A1 (en) * | 2019-12-30 | 2021-07-08 | 成都海光集成电路设计有限公司 | Power regulation system, method, and apparatus, chip, and electronic device |
| US11256275B2 (en) | 2019-12-30 | 2022-02-22 | Chengdu Haiguang Integrated Circuit Design Co., Ltd. | Power supply adjusting system, method and apparatus, chip, and electronic device |
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| CN113241751A (en) * | 2021-04-20 | 2021-08-10 | 青岛易来智能科技股份有限公司 | Power supply circuit |
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