CN103973114B - A kind of DC source of power limitation control - Google Patents
A kind of DC source of power limitation control Download PDFInfo
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- CN103973114B CN103973114B CN201410188630.6A CN201410188630A CN103973114B CN 103973114 B CN103973114 B CN 103973114B CN 201410188630 A CN201410188630 A CN 201410188630A CN 103973114 B CN103973114 B CN 103973114B
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Abstract
The invention discloses the DC source of a kind of power limitation control, be mainly made up of prime stabilized power source, BUCK circuit, sample circuit, cpu control circuit, PWM drive circuit, protection circuit and lower programmed circuit etc..Circuit uses double circle controling mode, and output current signal, as internal ring, is acquired by electric current loop.Output voltage signal, as outer shroud, is fed back by Voltage loop.And increase power control loop, and i.e. increase voltage, electric current multiplier and produce error signal through operational amplifier, all signals are ultimately feeding to cpu control circuit and process.Under rated output power, can realize voltage, the output of electric current combination in any, such power supply is equivalent to multiple stage conventional power source and is applied in combination.
Description
Technical field
The present invention relates to DC source field, the DC source of a kind of power limitation control.
Background technology
Wide scope constant-power direct-current power supply refers to that output voltage and electric current all can continuously adjust in wider scope, and
In working area, power supply can be operated in constant power mode, i.e. load current hour output voltage height, output voltage when load current is big
Low.During the developing of many electronic equipments, it is required for the general regulated power supply of various experiment and test, this
Class power supply is typically desirable that wider voltage regulation limits and certain output ability.Such as the communications industry is used
The research and development of the low-voltage, high-current DC/DC module arrived and test, it is desirable to be able to low voltage and the test power supply of larger current are provided.
At present, the implementation method of wide scope constant-power power source also has employing linear power supply and linear power supply and Switching Power Supply group
The mode closed.Though traditional linear stabilized power supply has the features such as range of regulation width, good stability, control circuit are simple, but modulated
The restriction of the factors such as homogeneous tube power consumption, it is difficult to accomplish that big electric current wide-range voltage exports.Output voltage to be made can wide range regulation,
Multi-gear switch or the mode of conversion transformer tap must be used, cause its volume compared with big, efficiency is on the low side.And linear power supply with open
Close the combined mode of power supply, although ensure that the precision of voltage stabilizing, improve the efficiency of system to a certain extent, but output voltage
In relative broad range during change, still it cannot be guaranteed that system high efficiency in full output voltage range.
Summary of the invention it is an object of the invention to provide the DC source of a kind of power limitation control, deposits solving prior art
Problem.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of DC source of power limitation control, it is characterised in that: include prime stabilized power source, biphase crisscross parallel is opened up
Flutter the BUCK circuit of structure, current sampling circuit, voltage sampling circuit, PWM drive circuit, cpu control circuit, lower programming electricity
Road, described BUCK circuit accesses between prime stabilized power source two outfan, BUCK electric routing switch pipe Q1 and Q2, diode D1 and
D2, energy storage inductor L1 and L2 are constituted, and wherein first outfan of the drain electrode of switching tube Q1 and prime stabilized power source is connected, switching tube
The source electrode of Q1 is connected to one end of energy storage inductor L1, the other end of energy storage inductor L1 and a storage capacitor Co one end and connects, storage
Can be connected by second outfan of the electric capacity Co other end and prime stabilized power source, storage capacitor Co two ends are also parallel with by resistance RL、
The series arm that current sense resistor Rs is in series, the negative electrode of described diode D1 is connected to source electrode and the energy storage of switching tube Q1
Between inductance L1, second outfan of the anode of diode D1 and prime stabilized power source is connected, the drain electrode of described switching tube Q2 with
First outfan of prime stabilized power source connects, and the source electrode of switching tube Q2 is connected to one end of energy storage inductor L2, energy storage inductor L2
The other end be connected between energy storage inductor L1 and storage capacitor Co, the negative electrode of described diode D2 is connected to the source of switching tube Q2
Between pole and energy storage inductor L2, second outfan of the anode of diode D2 and prime stabilized power source is connected, described current sample
Circuit input is connected to current sense resistor Rs two ends, and current sampling circuit output is connected to cpu control circuit input, described electricity
Pressure sample circuit input is connected to storage capacitor Co and resistance RLBetween, voltage sampling circuit output is connected to cpu control circuit
Input, the output of described cpu control circuit is respectively connecting to PWM drive circuit input, the input of lower programmed circuit, and described PWM drives
Circuit output is respectively connecting to the grid of BUCK circuit breaker in middle pipe Q1, the grid of switching tube Q2, and described lower programmed circuit exports
Be respectively connecting between storage capacitor Co and current sense resistor Rs, storage capacitor Co and resistance RLBetween.
The DC source of described a kind of power limitation control, it is characterised in that: described current sampling circuit is by differential sample
Amplifier, current operational amplifier are constituted, and differential sample amplifier two input is connected with current sense resistor Rs two ends respectively,
Differential sample amplifier out is connected to one of them input of current operational amplifier, and another is defeated for current operational amplifier
Entering to terminate into current reference signal, current operational amplifier outfan is connected to cpu control circuit input.
The DC source of described a kind of power limitation control, it is characterised in that: described voltage sampling circuit includes that voltage is by mistake
Difference amplifier, one input of voltage error amplifier is connected to storage capacitor Co and resistance RLBetween, voltage error amplifier
Another input accesses voltage reference signal, and voltage error amplifier outfan is connected to cpu control circuit input.
The DC source of described a kind of power limitation control, it is characterised in that: described lower programmed circuit includes that error is amplified
Device, audion Q3, switching tube Q4, resistance R1, cpu control circuit output is connected to one of them input of error amplifier, by mistake
Difference another input of amplifier accesses given reference signal, and error amplifier output is connected to the base stage of audion Q3, and three
The grounded emitter of pole pipe Q3, the colelctor electrode of audion Q3 is connected with the grid of switching tube Q4, and the colelctor electrode of audion Q3 is the most logical
Cross resistance and access voltage VCC, the drain electrode of switching tube Q4 by resistance R1 be connected to storage capacitor Co and current sense resistor Rs it
Between, the source electrode of switching tube Q4 is connected to storage capacitor Co and resistance RLBetween.
The DC source of described a kind of power limitation control, it is characterised in that: also include that power multiplier, Power arithmetic are put
Big device, one input of power multiplier is connected to differential sample amplifier out, and another input of power multiplier is even
It is connected to voltage error amplifier and storage capacitor Co, resistance RLBetween connect input, the outfan of power multiplier and merit
One input of rate operational amplifier connects, and another input of power operational amplifier accesses peak power reference signal, merit
Rate operational amplifier output terminal is connected to the input of cpu control circuit.
The DC source of described a kind of power limitation control, it is characterised in that: also including protection circuit, protection circuit is by mistake
Voltage protection circuit, current foldback circuit, overpower-protection circuit are constituted, and protection circuit accesses the input of cpu control circuit.
The present invention is when light load, it is provided that high voltage/small area analysis output；When heavier loads, it is provided that low
Pressure/High-current output.This power volume can be controlled in less space, and this power supply has dynamic response speed faster
Degree.
The present invention uses the double BUCK reduction voltage circuit parallel connection topological structure of alternating expression and the design of CPU digital control technology, and increases
Add lower programmed circuit and protection circuit guarantees power supply reliability.
The invention have the advantages that
1, output voltage, electric current continuously adjustable in relative broad range.
2, there is power limitation control output characteristics.
3, there is governing speed and flexibly control mode faster.
4, there is overvoltage, cross the defencive functions such as stream, overpower.
Accompanying drawing explanation
Fig. 1 is wide scope constant-power power source output characteristics figure.
Fig. 2 is the schematic block circuit diagram that the present invention implements.
Fig. 3 is the BUCK circuit implemented of the present invention and cpu control circuit principle schematic.
Detailed description of the invention
As shown in Figure 2 and Figure 3, the DC source of a kind of power limitation control, include prime stabilized power source, two staggered also
Connection the BUCK circuit of topological structure, current sampling circuit, voltage sampling circuit, PWM drive circuit, cpu control circuit, lower programming
Circuit, BUCK circuit accesses between prime stabilized power source two outfan, BUCK electric routing switch pipe Q1 and Q2, diode D1 and
D2, energy storage inductor L1 and L2 are constituted, and wherein first outfan of the drain electrode of switching tube Q1 and prime stabilized power source is connected, switching tube
The source electrode of Q1 is connected to one end of energy storage inductor L1, the other end of energy storage inductor L1 and a storage capacitor Co one end and connects, storage
Can be connected by second outfan of the electric capacity Co other end and prime stabilized power source, storage capacitor Co two ends are also parallel with by resistance RL、
The series arm that current sense resistor Rs is in series, the negative electrode of diode D1 is connected to source electrode and the energy storage inductor of switching tube Q1
Between L1, second outfan of the anode of diode D1 and prime stabilized power source is connected, and the drain electrode of switching tube Q2 is stable with prime
First outfan of power supply connects, and the source electrode of switching tube Q2 is connected to one end of energy storage inductor L2, the other end of energy storage inductor L2
Being connected between energy storage inductor L1 and storage capacitor Co, the negative electrode of diode D2 is connected to source electrode and the energy storage inductor of switching tube Q2
Between L2, second outfan of the anode of diode D2 and prime stabilized power source is connected, and current sampling circuit input is connected to electricity
Stream detection resistance Rs two ends, current sampling circuit output is connected to cpu control circuit input, and voltage sampling circuit input is connected to
Storage capacitor Co and resistance RLBetween, voltage sampling circuit output is connected to cpu control circuit input, and cpu control circuit exports
Being respectively connecting to PWM drive circuit input, the input of lower programmed circuit, PWM drive circuit output is respectively connecting in BUCK circuit
The grid of switching tube Q1, the grid of switching tube Q2, the output of lower programmed circuit is respectively connecting to storage capacitor Co and current detecting electricity
Between resistance Rs, storage capacitor Co and resistance RLBetween.
Current sampling circuit is made up of differential sample amplifier 1, current operational amplifier 2, and 1 liang of differential sample amplifier is defeated
Enter end be connected with current sense resistor Rs two ends respectively, differential sample amplifier 1 outfan be connected to current operational amplifier 2 its
In an input, another input of current operational amplifier 2 access current reference signal, current operational amplifier 2 exports
End is connected to cpu control circuit input.
Voltage sampling circuit includes that voltage error amplifier 3,3 one inputs of voltage error amplifier are connected to energy storage electricity
Hold Co and resistance RLBetween, another input of voltage error amplifier 3 accesses voltage reference signal, voltage error amplifier 3
Outfan is connected to cpu control circuit input.
Lower programmed circuit includes error amplifier 6, audion Q3, switching tube Q4, resistance R1, and cpu control circuit output is even
Being connected to one of them input of error amplifier 6, another input of error amplifier 6 accesses given reference signal, and error is put
Big device 6 outfan is connected to the base stage of audion Q3, the grounded emitter of audion Q3, the colelctor electrode of audion Q3 and switching tube
The grid of Q4 connects, and the colelctor electrode of audion Q3 accesses voltage VCC also by resistance, and the drain electrode of switching tube Q4 is by resistance R1 even
Being connected between storage capacitor Co and current sense resistor Rs, the source electrode of switching tube Q4 is connected to storage capacitor Co and resistance RLIt
Between.
Also include that power multiplier 5, power operational amplifier 4,5 one inputs of power multiplier are connected to differential sample
Amplifier 1 outfan, another input of power multiplier 5 is connected to voltage error amplifier 3 and storage capacitor Co, resistance RL
Between connect input, 4 one inputs of the outfan of power multiplier 5 and power operational amplifier are connected, Power arithmetic
Another input of amplifier 4 accesses peak power reference signal, and power operational amplifier 4 outfan is connected to CPU and controls electricity
The input on road.
Also including protection circuit, protection circuit is by overvoltage crowbar, current foldback circuit, overpower-protection circuit structure
Becoming, protection circuit accesses the input of cpu control circuit.
In the present invention, use digital control method, the signals collecting post processing such as electric power output voltage, electric current is controlled BUCK
Changer exports, and increases lower programmed circuit raising output response speed.Achieve the output of power supply high precision wide range, specified
In output power range, voltage, electric current can combination in any, there is control mode flexibly.By changing circuit parameter, Ke Yiying
It is used in different grades of voltage, the design of electric current width scope DC source.
In the present invention, use digital control method, thus ensure power supply control in real time with output voltage, electric current high-precision
Degree.Use voltage, current double closed-loop to control technology, and increase power ring control output general power, so that it is guaranteed that voltage, electric current are steady
Fixed.Rear class BUCK circuit uses biphase crisscross parallel topological structure, increases power device Redundancy Design, it is ensured that power supply is reliably transported
OK.Use lower programmed circuit, control power supply output and quickly adjust, it is achieved dynamic response faster.On the basis of this power supply, logical
Cross change relevant parameter, the continuously adjustable power limitation control of high precision wide range of different voltage, current class can be designed
DC source.
In order to realize the output of voltage gamut, prime stabilized power source be should be greater than rear class maximum output voltage, driven by PWM
Circuit controls output duty cycle, it is achieved output voltage is adjustable.PWM duty cycle can change in the range of 0～100%, but in view of opening
Close pipe conducting time-delay characteristics, it is necessary to retain certain Dead Time.
In order to reduce the noise of prime stabilized power source, in BUCK importation and connect a high frequency capacitance, filter high frequency and make an uproar
Sound.
It is relatively big that the present invention exports electric current, causes reduce device lifetime to reduce reduction current stress and switching tube heating
Impact, BUCK circuit use alternating expression parallel connection topological structure.PWM drive circuit synchronous control switch pipe Q1 and Q2 conducting and pass
Disconnected, energy storage inductor L1 and L2 charges to electric capacity Co and is supplied to rear end output loading RL , diode D1 and D2 plays afterflow effect.
The present invention has and exports response speed faster, when CPU send order close power supply time, be simultaneously emitted by order to by mistake
Difference amplifier 6 and given benchmark compare control audion Q3 and disconnect.Thus controlling switching tube Q4 conducting so that power supply is by opening
Close pipe Q4 and resistance R1 and quickly draw electric current, output voltage is pulled to 0V, thus circuit output has response speed faster.
The present invention uses high-precision AD chip quick sampling voltage, current signal, and CPU is internally integrated high accuracy DA, permissible
High resolution voltage, current value are set, thus control high accuracy and export.
As it is shown in figure 1, the present invention has wide scope power limitation control output function, in the situation that general power does not exceeds standard
Under, voltage, electric current can be in any combination.Such power supply is equivalent to multiple stage conventional power source and is applied in combination, thus at product
Research and development and test process need not frequently change power supply, and decrease the cost of power-supply device.
As in figure 2 it is shown, this schematic block circuit diagram that to be the present invention implement, mainly by prime stabilized power source, BUCK circuit, adopt
Sample circuit, cpu control circuit, PWM drive circuit, protection circuit and lower programmed circuit composition.Circuit uses double-closed-loop control side
Formula, output current signal, as internal ring, is acquired by electric current loop, and output voltage signal, as outer shroud, is carried out instead by Voltage loop
Feedback.And increase power control loop, i.e. increase voltage, electric current multiplier and produce error signal, all letters through operational amplifier
Number it is ultimately feeding to cpu control circuit process.
As it is shown on figure 3, this is the present invention is embodied as circuit diagram, prime stabilized power source provides input for rear class BUCK circuit
Source；Here BUCK circuit uses biphase crisscross parallel topological structure, mainly by switching tube Q1 and Q2, diode D1 and D2 and energy storage
Inductance L1 and L2 forms；Sample circuit in Fig. 2 includes that voltage, current signal are sampled.Current sense resistor Rs uses accurate manganese
Copper resistance, differential sample amplifier 1, to giving current operational amplifier 2 after current acquisition, obtains after comparing with current reference
Current error signal gives CPU process.Voltage error amplifier 3 is given after comparing with voltage reference after being acquired voltage
CPU process.The voltage, the current signal that gather deliver to power operational amplifier 4 and peak power benchmark after power multiplier 5
Comparing, operation result gives CPU process；PWM drive circuit according to CPU send Signal-controlled switch pipe Q1, Q2 conducting and
Turning off, thus maintain stablizing of output voltage, energy storage inductor L1, L2 and storage capacitor Co provide the electric current required for load；Protect
Protection circuit includes overvoltage, crosses the circuit such as stream, overpower；Lower programmed circuit is equivalent to electronic load function, and it controls supply voltage
Output rapidly drops to 0V.When CPU sends order closedown power supply, it is simultaneously emitted by order to error amplifier 6 and given benchmark
Compare control audion Q3 to disconnect, thus control switching tube Q4 conducting so that power supply is quick by switching tube Q4 and resistance R1
Draw electric current, output voltage is pulled to 0V, thus circuit output has response speed faster.
Devising the power supply of a 20V/50A on circuit base of the present invention, its output is 500W to the maximum.Power supply is only
Having 1U height, in the case of general power is less than rated output power, voltage, electric current can be equivalent to several in any combination
Power supply.This power supply can also be operated in constant voltage or constant current mode, can be arranged as required to, and has in many research and development of products tests
And be widely applied.
Claims (1)
1. the DC source of a power limitation control, it is characterised in that: include prime stabilized power source, biphase crisscross parallel topology
The BUCK circuit of structure, current sampling circuit, voltage sampling circuit, PWM drive circuit, cpu control circuit, lower programmed circuit,
Described BUCK circuit accesses between prime stabilized power source two outfan, BUCK electric routing switch pipe Q1 and Q2, diode D1 and D2,
Energy storage inductor L1 and L2 is constituted, and wherein first outfan of the drain electrode of switching tube Q1 and prime stabilized power source is connected, switching tube Q1
Source electrode be connected to one end of energy storage inductor L1, the other end of energy storage inductor L1 and a storage capacitor Co one end and connect, energy storage
Second outfan of the electric capacity Co other end and prime stabilized power source is connected, and storage capacitor Co two ends are also parallel with by resistance RL, electricity
The series arm that stream detection resistance Rs is in series, the negative electrode of described diode D1 is connected to source electrode and the energy storage electricity of switching tube Q1
Between sense L1, second outfan of the anode of diode D1 and prime stabilized power source is connected, and the drain electrode of described switching tube Q2 is with front
Level first outfan of stabilized power source connects, and the source electrode of switching tube Q2 is connected to one end of energy storage inductor L2, energy storage inductor L2's
The other end is connected between energy storage inductor L1 and storage capacitor Co, and the negative electrode of described diode D2 is connected to the source electrode of switching tube Q2
And between energy storage inductor L2, second outfan of the anode of diode D2 and prime stabilized power source is connected, described current sample electricity
Road input is connected to current sense resistor Rs two ends, and current sampling circuit output is connected to cpu control circuit input, described voltage
Sample circuit input is connected to storage capacitor Co and resistance RLBetween, it is defeated that voltage sampling circuit output is connected to cpu control circuit
Entering, the output of described cpu control circuit is respectively connecting to PWM drive circuit input, the input of lower programmed circuit, and described PWM drives electricity
Road output is respectively connecting to the grid of BUCK circuit breaker in middle pipe Q1, the grid of switching tube Q2, the output point of described lower programmed circuit
Be not connected between storage capacitor Co and current sense resistor Rs, storage capacitor Co and resistance RLBetween；
Described current sampling circuit is made up of differential sample amplifier, current operational amplifier, and differential sample amplifier two inputs
End is connected with current sense resistor Rs two ends respectively, and differential sample amplifier out is connected to current operational amplifier wherein
Individual input, another input of current operational amplifier accesses current reference signal, and current operational amplifier outfan connects
Input to cpu control circuit；
Described voltage sampling circuit includes that voltage error amplifier, one input of voltage error amplifier are connected to storage capacitor
Co and resistance RLBetween, another input of voltage error amplifier accesses voltage reference signal, and voltage error amplifier exports
End is connected to cpu control circuit input；
Described lower programmed circuit includes that error amplifier, audion Q3, switching tube Q4, resistance R1, cpu control circuit output connect
To one of them input of error amplifier, another input of error amplifier accesses given reference signal, error amplifier
Outfan is connected to the base stage of audion Q3, the grounded emitter of audion Q3, and the colelctor electrode of audion Q3 is with switching tube Q4's
Grid connects, and the colelctor electrode of audion Q3 accesses voltage VCC also by resistance, and the drain electrode of switching tube Q4 is connected to by resistance R1
Between storage capacitor Co and current sense resistor Rs, the source electrode of switching tube Q4 is connected to storage capacitor Co and resistance RLBetween；
The DC source of described a kind of power limitation control, also includes power multiplier, power operational amplifier, power multiplier
One input is connected to differential sample amplifier out, and another input of power multiplier is connected to voltage error and amplifies
Device and storage capacitor Co, resistance RLBetween the input that connects, the outfan of power multiplier and power operational amplifier one
Input connects, and another input of power operational amplifier accesses peak power reference signal, and power operational amplifier exports
End is connected to the input of cpu control circuit；
The DC source of described a kind of power limitation control, also includes protection circuit, and protection circuit is by overvoltage crowbar, excessively stream
Protection circuit, overpower-protection circuit are constituted, and protection circuit accesses the input of cpu control circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410188630.6A CN103973114B (en) | 2014-05-06 | 2014-05-06 | A kind of DC source of power limitation control |
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| CN201410188630.6A CN103973114B (en) | 2014-05-06 | 2014-05-06 | A kind of DC source of power limitation control |
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| CN103973114B true CN103973114B (en) | 2016-11-09 |
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Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610302B (en) * | 2014-11-24 | 2020-04-07 | 中兴通讯股份有限公司 | Power control method and device |
| CN105790578B (en) * | 2014-12-22 | 2020-03-17 | 中兴通讯股份有限公司 | Parallel interleaved BUCK converter and control method |
| CN105511389B (en) * | 2015-12-02 | 2018-06-26 | 中国电子科技集团公司第四十一研究所 | A kind of lower programming Control loop for promoting programme-controlled dc power output response speed |
| CN105406723B (en) * | 2015-12-24 | 2018-09-18 | 杭州士兰微电子股份有限公司 | Constant-power control circuit and the drive system for including the constant-power control circuit |
| CN105407619B (en) * | 2015-12-24 | 2018-03-16 | 杭州士兰微电子股份有限公司 | Start-up circuit and method and HID switch power supply systems for HID lamp |
| CN105634277A (en) * | 2016-02-14 | 2016-06-01 | 山东超越数控电子有限公司 | Power supply control method for improving transient state response performance of point-of-load power supply |
| CN106507547B (en) * | 2016-12-27 | 2018-01-16 | 苏州纽克斯电源技术股份有限公司 | A kind of LED dimming control systems |
| CN108258654B (en) * | 2016-12-29 | 2020-02-11 | 上海海拉电子有限公司 | DC voltage stabilizing converter and control method thereof |
| FR3067872B1 (en) * | 2017-06-15 | 2020-03-06 | Valeo Vision | STABILIZED ELECTRICAL SUPPLY IN PULSE WIDTH MODULATION |
| CN109494983A (en) * | 2017-09-13 | 2019-03-19 | 株洲中车时代电气股份有限公司 | A kind of DC converter |
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| CN108183610A (en) * | 2018-02-28 | 2018-06-19 | 深圳市恒惠源电子有限公司 | A kind of high-precision constant-power direct-current power supply |
| CN109462335A (en) * | 2018-12-20 | 2019-03-12 | 江苏万帮德和新能源科技股份有限公司 | Crisscross parallel Buck power control circuit and its control method |
| CN110896279B (en) * | 2019-10-12 | 2022-12-23 | 深圳市伟鹏世纪科技有限公司 | LED emergency power supply constant power output circuit and working method |
| CN112511109B (en) * | 2020-09-25 | 2023-10-27 | 锐迪科创微电子（北京）有限公司 | Power amplifying circuit and wireless transmitting device |
| CN112260515A (en) * | 2020-09-28 | 2021-01-22 | 中国航空工业集团公司雷华电子技术研究所 | Method and circuit for maintaining constant power output of multiple power supply modules and power supply module |
| CN112467998B (en) * | 2020-10-14 | 2022-03-29 | 华南理工大学 | Energy density adjustable multi-working mode plasma power supply |
| CN112688568B (en) * | 2020-12-17 | 2021-11-23 | 成都启臣微电子股份有限公司 | Constant-power-mode forward controller and control method |
| CN112953207B (en) * | 2021-04-22 | 2023-01-13 | 电子科技大学 | Converter, bipolar direct-current micro-grid and conversion method thereof |
| CN114374311B (en) * | 2022-03-21 | 2022-07-15 | 深圳市芯茂微电子有限公司 | Load power characterization method, system and processing module |
| CN116979807A (en) * | 2022-04-21 | 2023-10-31 | 深圳英集芯科技股份有限公司 | Multi-phase buck conversion circuit, related device and related equipment |
| CN116093893B (en) * | 2023-04-07 | 2023-07-07 | 深圳市联明电源有限公司 | Constant-current driving protection circuit, laser pumping system and constant-current driving protection method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581654A (en) * | 2003-08-05 | 2005-02-16 | 沛亨半导体股份有限公司 | Voltage-dropping DC-to-DC power supply converter and power supply converting method |
| CN201975995U (en) * | 2011-03-07 | 2011-09-14 | 艾德克斯电子（南京）有限公司 | Circuit capable of enlarging output range and improving output characteristic of switching power supply |
| CN202276184U (en) * | 2011-09-23 | 2012-06-13 | 沈阳设维士重型机械有限公司 | Large-scale charge and discharge combination chopper constant voltage ongoing direct-current power supply device |
| CN102904444B (en) * | 2012-08-07 | 2015-01-21 | 上海交通大学 | DC/DC (direct-current/direct-current) conversion and control system based on proton exchange membrane fuel cell |
| CN203872056U (en) * | 2014-05-06 | 2014-10-08 | 中国电子科技集团公司第四十一研究所 | Direct-current power supply controlled by constant power |
-
2014
- 2014-05-06 CN CN201410188630.6A patent/CN103973114B/en not_active Expired - Fee Related
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