CN107834826A - Energy supply control module - Google Patents
Energy supply control module Download PDFInfo
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- CN107834826A CN107834826A CN201711059754.4A CN201711059754A CN107834826A CN 107834826 A CN107834826 A CN 107834826A CN 201711059754 A CN201711059754 A CN 201711059754A CN 107834826 A CN107834826 A CN 107834826A
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- circuit unit
- power
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- output
- voltage
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Classifications
-
- 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
- H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- 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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- 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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/071—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate a negative voltage output from a positive voltage source
-
- 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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
- H02M3/072—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps adapted to generate an output voltage whose value is lower than the input voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
Present invention is disclosed a kind of energy supply control module; including input protection filter circuit unit, power down holding circuit unit, auxiliary power circuit unit, control circuit unit, detection circuit unit and DC/DC conversions and output filter circuit unit; wherein input protection filter circuit unit is protected to the power supply of outside input by implementing one-way conduction to input power polarity inversion, and the protective separation to power input is realized using N-channel FET and its circuit of driver composition on input path；Power down holding circuit unit maintains the normal power source of certain time to export in the case of the unexpected power down of input power；Auxiliary power circuit unit is to control circuit unit and detection circuit unit power supply；Control circuit unit is controlled to energy supply control module mode of operation and state, and detection circuit unit automatically cuts off out-put supply when when power supply supplying module exception and sends out interrupt signal；DC/DC is changed and output filter circuit unit converts input voltage into different direct voltage sources.
Description
【Technical field】
The invention belongs to electronic applications, particularly relate to a kind of energy supply control module.
【Background technology】
Power supply supplying module is the power source module in electronic product, and it provides power for other functional modules in product
Source inputs, and either in consumer electronics product, vehicle electronics product or Aero-Space electronic product, it is all can not
The part lacked.By taking aviation class power supply supplying module as an example, as shown in figure 1, outside 28V input powers are converted to production by it
All kinds of dc sources inside product needed for other modules, such as+5V, -5V ,+3.3V, while some necessary control signals are provided,
Such as power-on reset signal RESET, power-fail interrupt signal INT.
6 circuit units are generally comprised inside power supply supplying module, respectively input protection filter circuit unit, power down dimension
Hold circuit unit, auxiliary power circuit unit, control circuit unit, detection circuit unit and DC/DC conversions and output filtered electrical
Road unit, above-mentioned each circuit unit is specifically described below.
Input protection filter circuit unit implements the operation of one-way conduction to the power supply of outside input, to prevent input power
Reversal connection causes the irreversible damage to product, typically suppresses two-way two pole by inertia fuse, Schottky diode, transient voltage
Pipe and filter capacitor composition, inertia fuse therein allow instantaneous overcurrent during start to pass through the work of Schottky diode
With being to prevent from damaging circuit due to input voltage reverse connection, transient voltage suppress bilateral diode and filter capacitor be respectively in order to
Absorb input electrical surge and filter the high frequency ripple colonized on dc source.
Power down holding circuit unit is used in the case of the unexpected power down of input power, and power supply supplying module is able to maintain that one
Fix time normal power source output, with ensure product can carry out it is lower electricity before scene protection, avoid that product is caused to damage, typically
Realized by the electric discharge of storage capacitor, conventional has open energy storage and controllable type energy storage two ways.
Auxiliary power circuit unit is used to enter the control circuit unit inside power supply supplying module and detection circuit unit
Row power supply.
Control circuit unit is used to be controlled mode of operation, the working condition of power supply supplying module, mainly by instantaneous
Power-off protecting circuit, power-up time delay circuit, DC-DC output control circuits, external signal start-up circuit etc. form, and wherein DC-DC is defeated
Go out control circuit and typically use parallel type output control pattern.
Detection circuit unit is mainly detected circuit etc. and formed by overvoltage undervoltage detection circuit, excess temperature so that when power supply supplies
During the input/output terminal electric voltage exception of module or when temperature switch element experiences excess temperature, out-put supply is automatically cut off, simultaneously
Send out interrupt signal.
DC/DC is changed and output filter circuit unit converts input voltage into various differences from DC-DC conversion chips
Magnitude of voltage, and the filter circuit being made up of electric capacity is furnished with each output voltage mouth.
Although although the application demand of many occasions disclosure satisfy that using the power supply supplying module of conventional art, in property
Energy, reliability, volume, cost, power consumption etc. are but difficult to optimize, the problem of being primarily present following three aspect.
First aspect：Existing power supply supplying module is to set the pole of Schottky two in filter circuit unit is protected in input
Pipe realizes power input protective separation, reaches the positive purpose by, reverse isolation using the one-way conduction characteristic of diode,
But due to diode under forward conduction working condition and nonideal zero impedance, as shown in Fig. 2 can be in two poles in high current
Larger pressure drop is produced on pipe, heat consumption is greatly, it is necessary to good cooling facilities.
Second aspect：Existing power down holding circuit unit typically realizes that energy storage is electric by the discharge and recharge of storage capacitor
The power down of appearance maintains output time 1. to be obtained by formula, and the principle of conventional open energy storage and controllable type energy storage is shown in Fig. 3
And Fig. 4, both energy storage mode circuits are simple, but influenceed by input supply voltage it is very big, storage capacitor utilization rate it is low, it is necessary to
Capacitance is big, and the electric capacity of large volume both ties up installing space, the design difficulty and cost improved again.
Wherein C：The capability value of storage capacitor
P：The input power of product
Δt：Power down maintains output time
V1：Product is capable of the maximum voltage value at normal work electric capacity both ends
V2：Product can normal work be electric capacity both ends minimum amount of voltage that
The third aspect：Existing DC/DC conversions and output filter circuit unit use parallel type power supply output control pattern,
Specifically as shown in figure 5, the hidden danger for starting failure occurs in the quick power-on and power-off of product, because：(1) load such as+5V is long-range
In -5V load, (>=50ms) -5V ability power-off when lower electric, was wanted the long period after+5V power-off；(2) -5V may
It is coupled to+5V ends by other functional modules, and a no small negative voltage is produced at+5V ends；(3)+5V DC-DC module
Synchronous rectification export technique is employed, when the negative voltage of output end exceedes certain thresholding (such as：>=-0.3V) when, it will be considered that output
Failure enters guard mode and closes output.
【The content of the invention】
It is an object of the invention to provide a kind of energy supply control module, is asked to solve the above-mentioned of existing power supply supplying module
Topic.
To achieve the above object, the energy supply control module of the present invention, including input protection filter circuit unit, power down are implemented
Holding circuit unit, auxiliary power circuit unit, control circuit unit, detection circuit unit and DC/DC conversions and output filtering
Circuit unit, wherein input protects filter circuit unit to the power supply of outside input by implementing one-way conduction to input power pole
Sex reversal is protected, and is realized on input path using N-channel FET and its circuit of driver composition to power supply
The protective separation of input；Power down holding circuit unit is used in the case of the unexpected power down of input power, power supply supplying module energy
Enough maintain the normal power source output of certain time；Auxiliary power circuit unit is used for the control circuit inside power supply supplying module
Unit and detection circuit unit are powered；Control circuit unit is used for mode of operation, working condition to power supply supplying module
It is controlled, detection circuit unit is when when the input/output terminal electric voltage exception of power supply supplying module or when temperature switch element sense
During by excess temperature, out-put supply is automatically cut off, while send out interrupt signal；DC/DC is changed and output filter circuit unit
A variety of magnitudes of voltage are converted input voltage into, and the filtered electrical being made up of electric capacity is furnished with each output voltage mouth
The electricity that filter circuit unit is formed on input path using N-channel FET and its driver is protected on road, the wherein input
The protective separation to power input is realized on road.
It is preferred that the circuit approximate ideal diode that N-channel FET and its driver are formed, driver exists during work
The gate-source both ends of FET produce the pressure difference more than 10V, and now FET is fully on, the conducting resistance between source-drain electrodes
Resist very low, pressure difference very little when passing through high current；During protection, driver makes the approximate 0V of gate-source both end voltage difference of FET, this
When source-drain electrodes between impedance it is infinitely great, cannot flow through electric current；Simultaneously inside FET parasitism diode direction with it is normal
Operating current direction is consistent, reversely cut-off.
It is preferred that the power down holding circuit unit also includes a booster circuit, during normal work, external power source passes through boosting
The voltage that circuit rises to input voltage setting charges to storage capacitor；During generation power down, detection electric circuit inspection to input
After voltage is less than electric discharge thresholding, control circuit control gate-controlled switch opens storage capacitor electric discharge, maintains the normal electricity of certain time
Source exports.
It is preferred that DC/DC conversions and output filter circuit unit are provided with corresponding control circuit, whether exported with+5V
- 5V output is turned on and off for Rule of judgment.
It is preferred that the control circuit includes a voltage-regulator diode, a resistance and an optocoupler for series connection, when output
5V supply voltages are more than 4V, reverse breakdown voltage-regulator diode, and electric current flows through optocoupler primary and is connected to output by resistance current limliting
5V, the control circuit output for controlling optocoupler secondary be high level signal, the enabled control terminal phases of DC/DC of the output and -5V
Even, DC/DC is enabled puts high level output -5V power supplys；When the 5V supply voltages of output are less than 4V, supply voltage can not puncture surely
Diode is pressed, optocoupler primary no current flows through, and the secondary control circuit output of optocoupler is low level signal, and -5V DC/DC is enabled
Set low level, closing -5V power supplys.
Compared with prior art, power supply supplying module provided by the invention disclosure satisfy that the application demand of all occasions,
With the advantage that performance is good, reliability is high, and miniaturization, low cost, low-power consumption can be accomplished.These technologies practical application
In avionics product.
【Brief description of the drawings】
Fig. 1 is the composition schematic diagram of existing aviation class power supply supplying module.
Fig. 2 is the on state characteristic schematic diagram of diode.
Fig. 3 is the principle schematic of open accumulator.
Fig. 4 is the principle schematic of controllable type accumulator.
Fig. 5 is the schematic diagram of existing DC/DC conversions and output filter circuit unit.
Fig. 6 is the circuit diagram of the input protection filter circuit unit of the present invention.
Fig. 7 is the circuit diagram of the power down holding circuit unit of the present invention.
Fig. 8 is the power supply wave shape figure of the power down holding circuit unit shown in Fig. 7.
Fig. 9 is DC/DC conversions and the circuit diagram of output filter circuit unit of the present invention.
【Embodiment】
Implement the energy supply control module of the present invention also include input protection filter circuit unit, power down holding circuit unit,
Auxiliary power circuit unit, control circuit unit, detection circuit unit and DC/DC conversions and output filter circuit unit, it is each
The function of circuit unit can join described in background technology, no longer describe in detail herein, and present invention is only intended for input to protect filtered electrical
Road unit, power down holding circuit unit and DC/DC conversions and output filter circuit unit carry out local improvement.A pin below
The improvement of above three unit is described in detail.
As shown in fig. 6, the present invention input protection filter circuit unit on input path using N-channel FET and
The circuit that its driver is formed realizes the protective separation to power input, electricity that N-channel FET and its driver are formed
Road approximate ideal diode, the grid (G) of driver scene effect pipe-source (S) both ends produce the pressure difference more than 10V during work, i.e.,
VGS ＞ 10V, now FET is fully on, very low (general a few m Ω-tens m of the conduction impedance between source (S)-leakage (D) pole
Ω), pressure difference very little when passing through high current, therefore caused heat also very little, therefore the requirement to radiating is also low, while improve electricity
The overall transformation efficiency of source supplying module..During protection, driver makes grid (G)-source (S) both end voltage difference of FET approximate
0V, i.e. VGS=0V, now the impedance between source (S)-leakage (D) pole is infinitely great, cannot flow through electric current；FET is parasitic simultaneously
Inside diode direction it is consistent with running current direction, reversely cut-off；Therefore by N-channel FET and its driver
The circuit forward conduction of composition, reversely cut-off isolation.
As shown in fig. 7, the present invention increases booster circuit in power down holding circuit unit on traditional energy storage holding circuit, carry
The maximum voltage value V1 at high storage capacitor both ends, during normal work, input voltage is risen to and set by external power source by booster circuit
Fixed voltage charges to storage capacitor；During generation power down, after detection electric circuit inspection to input voltage is less than electric discharge thresholding, control
Circuit control gate-controlled switch processed opens storage capacitor electric discharge, maintains the normal power source of certain time to export.According in background technology
The formula referred to 1., in ΔtIn the case of identical, V1 is improved, storage capacitor C capacitance can be greatly reduced, from the parameter of table 1
Comparing to know, 200ms power down holds time required capacitance less than 1/3 before boosting, is tieed up using boost type energy storage
Hold the power supply wave shape of technology as shown in Figure 8, during normal work, DC/DC change-over circuits input voltage (such as figure dotted line 2 represents) with
(rationed the power supply with power supply voltage (1 representing dashed lines) in input voltage working range in input lower voltage limit-input
Pressure) work, now storage capacitor charging energy-storing (such as figure chain lines 3 represent)；When power supply power-fail occurs, electric circuit inspection is detected
After being less than electric discharge thresholding to input voltage, control circuit control gate-controlled switch opens storage capacitor electric discharge, and DC/DC change-over circuits are defeated
Enter voltage and rise to storage capacitor voltage, continue to close after normal output voltage to input voltage drops to the minimum operating voltages of DC/DC
Close.It can thus be seen that the program is not influenceed by input supply voltage, the utilization rate of storage capacitor is high, and identical power supply maintains
The capacitance needed is relatively few, that is, saves installing space, and design production cost is also greatly reduced.
| Sequence number | Input power | Storage capacitor maximum voltage | Storage capacitor minimum voltage | Power down is held time | Capacitance |
| 1 | 30W | 28V | 18V | 200ms | 26000uF |
| 2 | 30W | 44V | 18V | 200ms | 7400uF |
The storage of table 1 maintains parameter comparison sheet
As shown in figure 9, the present invention on the basis of tandem type power supply output control technology in parallel type power supply output control
Corresponding control circuit is added on the basis of pattern, the defeated of -5V is turned on and off for Rule of judgment so that whether+5V exports
Go out, realize no matter when+5V exports prior to -5V, solving can not export because -5V goes up conductance cause+5V power supplys prior to+5V
The problem of.In the specific implementation, judge 5V outputs mainly by being connected by a voltage-regulator diode, a resistance and an optocoupler
Form isolation detection controlling switch.When the 5V supply voltages of output are more than 4V, reverse breakdown voltage-regulator diode, electric current flows through optocoupler
It is primary simultaneously by resistance current limliting with being connected to output 5V, the control circuit output for control optocoupler secondary is high level signal, the output
Control terminal is enabled with -5V DC/DC to be connected, DC/DC is enabled to put high level output -5V power supplys；When the 5V supply voltages of output are small
In 4V, supply voltage can not puncture voltage-regulator diode, and optocoupler primary no current flows through, and the secondary control circuit output of optocoupler is low
Level signal, -5V DC/DC is enabled to set low level, closing -5V power supplys.
Compared with prior art, power supply supplying module provided by the invention disclosure satisfy that the application demand of all occasions,
With the advantage that performance is good, reliability is high, and miniaturization, low cost, low-power consumption can be accomplished.These technologies practical application
In avionics product.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its hair
Bright design is subject to equivalent substitution or change, and all these changes or replacement should all belong to the guarantor of appended claims of the invention
Protect scope.
Claims (5)
1. a kind of energy supply control module, including input protection filter circuit unit, power down holding circuit unit, auxiliary power circuit
Unit, control circuit unit, detection circuit unit and DC/DC conversions and output filter circuit unit, wherein input protection filtering
Circuit unit is protected to the power supply of outside input by implementing one-way conduction to input power polarity inversion, in input path
On the circuit that is formed using N-channel FET and its driver realize the protective separation to power input；Power down maintains electricity
Road unit can be in the case where unexpected power down occurs for input power, and energy supply control module continues to the normal power source of certain time
Output；Auxiliary power circuit unit is used to supply the control circuit unit inside energy supply control module and detection circuit unit
Electricity；Control circuit unit is used to be controlled mode of operation, the working condition of energy supply control module；Circuit unit is detected to work as
During the input/output terminal electric voltage exception of power supply supplying module or when temperature switch element experiences excess temperature, output electricity is automatically cut off
Source, while send out interrupt signal；DC/DC conversions and output filter circuit unit convert input voltage into a variety of
Magnitude of voltage, and the filter circuit being made up of electric capacity is furnished with each output voltage mouth.
2. energy supply control module as claimed in claim 1, it is characterised in that：What N-channel FET and its driver were formed
Circuit approximate ideal diode, the gate-source both ends of driver scene effect pipe produce the pressure difference more than 10V during work, now field
Effect pipe is fully on, and the conduction impedance between source-drain electrodes is very low, pressure difference very little when passing through high current；During protection, driver makes
The approximate 0V of gate-source both end voltage difference of FET, now the impedance between source-drain electrodes is infinitely great, cannot flow through electric current；Simultaneously
Diode direction is consistent with running current direction inside FET parasitism, reversely cut-off.
3. energy supply control module as claimed in claim 1, it is characterised in that：The power down holding circuit unit also includes a boosting
Circuit, during normal work, the voltage that external power source rises to input voltage by booster circuit setting fills to storage capacitor
Electricity；During generation power down, after detection electric circuit inspection to input voltage is less than electric discharge thresholding, control circuit control gate-controlled switch opens storage
Energy electric capacity electric discharge, maintains the normal power source of certain time to export.
4. energy supply control module as claimed in claim 1, it is characterised in that：The DC/DC is changed and output filter circuit unit
Provided with corresponding control circuit, -5V output is turned on and off so that whether+5V is exported as Rule of judgment.
5. energy supply control module as claimed in claim 4, it is characterised in that：The control circuit includes a voltage stabilizing two of series connection
Pole pipe, a resistance and an optocoupler, when the 5V supply voltages of output are more than 4V, reverse breakdown voltage-regulator diode, electric current flows through
Optocoupler is primary and the 5V of output is connected to by resistance current limliting, and it is high level letter control the secondary control circuit output of optocoupler
Number, the output enables control terminal with -5V DC/DC and is connected, and DC/DC is enabled to put high level output -5V power supplys；When the 5V electricity of output
Source voltage is less than 4V, and supply voltage can not puncture voltage-regulator diode, and optocoupler primary no current flows through, the secondary control circuit of optocoupler
Export as low level signal, -5V DC/DC is enabled to set low level, closing -5V power supplys.
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| CN201711059754.4A CN107834826B (en) | 2017-11-01 | 2017-11-01 | Power supply control module |
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| CN201711059754.4A CN107834826B (en) | 2017-11-01 | 2017-11-01 | Power supply control module |
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| CN107834826B CN107834826B (en) | 2020-04-24 |
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Cited By (11)
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| CN109342761A (en) * | 2018-09-11 | 2019-02-15 | 陕西千山航空电子有限责任公司 | A kind of rotor monitor speed processor |
| CN109613850A (en) * | 2018-10-31 | 2019-04-12 | 无锡小天鹅股份有限公司 | Clothes treatment device, storage medium, power control circuit and its control method |
| CN109861521A (en) * | 2019-03-28 | 2019-06-07 | 常州索维尔电子科技有限公司 | Vehicle-mounted low pressure auxiliary power circuit |
| CN109873399A (en) * | 2019-04-15 | 2019-06-11 | 苏州浪潮智能科技有限公司 | A kind of power protecting circuit and apparatus for protecting power supply |
| CN110502092A (en) * | 2019-07-17 | 2019-11-26 | 闻泰科技(无锡)有限公司 | Power supply circuit and electronic equipment |
| CN111064275A (en) * | 2020-01-19 | 2020-04-24 | 合肥工大高科信息科技股份有限公司 | Intrinsically safe uninterruptible power supply topology and implementation method |
| WO2020108509A1 (en) * | 2018-11-27 | 2020-06-04 | Foshan Ichikoh Valeo Auto Lighting Systems Co., Ltd. | Protection circuit, circuit and operation method therefor, and corresponding vehicle light and vehicle |
| CN112087119A (en) * | 2019-06-12 | 2020-12-15 | 宏碁股份有限公司 | Power supply device |
| CN112751482A (en) * | 2019-10-31 | 2021-05-04 | 群光电能科技股份有限公司 | Power supply conversion device |
| CN113036899A (en) * | 2021-03-10 | 2021-06-25 | 中国科学院长春光学精密机械与物理研究所 | Undervoltage and power-down protection system of aviation photoelectric equipment |
| CN113315360A (en) * | 2021-05-07 | 2021-08-27 | 北京军陶科技有限公司 | Anti-transient-outage power supply and equipment based on capacitor boosting energy storage |
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