CN107769532A - Single-inductance double-output switch converters capacitance current ripple control method and device - Google Patents
Single-inductance double-output switch converters capacitance current ripple control method and device Download PDFInfo
- Publication number
- CN107769532A CN107769532A CN201711216136.6A CN201711216136A CN107769532A CN 107769532 A CN107769532 A CN 107769532A CN 201711216136 A CN201711216136 A CN 201711216136A CN 107769532 A CN107769532 A CN 107769532A
- Authority
- CN
- China
- Prior art keywords
- capacitance current
- output
- inductance double
- output switch
- tgr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- H02M1/14—Arrangements for reducing ripples from dc input or output
- H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
-
- 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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
Abstract
The invention discloses a kind of single-inductance double-output switch converters capacitance current ripple control method and device.Capacitance current ripple control device CTR1Detect the single-inductance double-output switch converters output voltage Voa, and by detecting electric circuit inspection capacitance current Ic1With capacitance current Ic2, produce control pulse Vgs1, to control branch switch pipe S in single-inductance double-output switch converters1Conducting and shut-off；Capacitance current ripple control device CTR2Detect the single-inductance double-output switch converters output voltage Vob, and by detecting electric circuit inspection capacitance current Ic1With capacitance current Ic2, produce control pulse Vgs2, to control main switch S in single-inductance double-output switch converters2Conducting and shut-off.The beneficial effects of the present invention are for single-inductance double-output switch converters when load changes, the control pulse of energy quick regulation switching tube, output voltage overshoot is small, and regulating time is short, the load transient better performances of converter.
Description
Technical field
The present invention relates to switch converters technical field, particularly a kind of single-inductance double-output switch converters capacitance current
Ripple control method and device.
Background technology
With widely available, body of the user to its power supply of the portable type electronic products such as smart mobile phone, tablet personal computer
The requirement more and more higher of product, cost and efficiency.Research shows that single-inductance double-output switch converters can be smart mobile phone, flat board
The portable type electronic products such as computer provide the power supply of two-way independence, reduce the quantity of inductance and control chip, effectively
Power volume is reduced, reduces cost of manufacture, improves conversion efficiency, so as to increasing by academia and industrial quarters
Concern.
Traditional peak value comparison method, its control thought are：Control circuit includes outer voltage and current inner loop, outside voltage
Ring is by the output voltage of detection compared with reference voltage, and obtained error signal is after error amplifier compensates as electricity
The reference current of inner ring is flowed, compared with reference current, comparative result is used for controlling out the inductive current of current inner loop detection
Close the shut-off of pipe；The conducting of clock signal controlling switch pipe；So as to realize the regulation to switch converters output voltage.This method
For single-inductor dual-output converter, cross influence is serious between having output branch road, the slow-footed shortcoming of load transient response.
The content of the invention
It is an object of the invention to provide a kind of control method and device of single-inductance double-output switch converters, it is allowed to simultaneously
Influenceed with preferable load transient performance and less output cross, and suitable for the more of single-inductance double-output switch converters
Kind topological structure.
Realize that the technical scheme of the object of the invention is as follows：
Single-inductance double-output switch converters capacitance current ripple control method, capacitance current ripple control device CTR1Detection
The single-inductance double-output switch converters output voltage Voa, and by detecting electric circuit inspection capacitance current Ic1And capacitance current
Ic2, produce control pulse Vgs1, to control branch switch pipe S in single-inductance double-output switch converters1Conducting and shut-off；
Capacitance current ripple control device CTR2Detect the single-inductance double-output switch converters output voltage Vob, and by detecting circuit
Detect capacitance current Ic1With capacitance current Ic2, produce control pulse Vgs2, to control in single-inductance double-output switch converters
Main switch S2Conducting and shut-off.
Further, the control pulse Vgs1Generation method be：Output voltage VoaWith voltage reference value Vref1By
Error amplifier EAP1Produce the error signal V of amplificationc1It is sent into comparator CMP1Negative input end, capacitance current Ic1With electric capacity electricity
Flow Ic2Total capacitance current I is obtained by adder ADDcIt is sent into comparator CMP1Positive input terminal；IcAnd Vc1Comparative result
It is sent into rest-set flip-flop TGR1R ends, controlling brancher switching tube S1Shut-off；Clock signal clk is sent into rest-set flip-flop TGR1S ends,
Controlling brancher switching tube S1Conducting；The control pulse Vgs2Generation method be：Output voltage VobWith voltage reference value Vref2
By error amplifier EAP2Produce the error signal V of amplificationc2It is sent into comparator CMP2Negative input end, capacitance current Ic1And electricity
Capacitance current Ic2Total capacitance current I is obtained by adder ADDcIt is sent into comparator CMP2Positive input terminal；IcAnd Vc2Comparison
As a result it is sent into rest-set flip-flop TGR2R ends, control main switch S2Shut-off；Clock signal clk is sent into rest-set flip-flop TGR2S
End, control main switch S2Conducting.
Single-inductance double-output switch converters capacitance current ripple control device, including capacitance current ripple control device
CTR1, capacitance current ripple control device CTR2With detection circuit；The capacitance current ripple control device CTR1Including what is be sequentially connected
Voltage detecting circuit VS1, error amplifier EAP1, comparator CMP1, rest-set flip-flop TGR1With drive circuit DR1；EAP1It is also connected with
Reference voltage Vref1, TGR1It is also connected with clock signal clk；The capacitance current ripple control device CTR2Including the electricity being sequentially connected
Pressure detection circuit VS2, error amplifier EAP2, comparator CMP2, rest-set flip-flop TGR2With drive circuit DR2；EAP2It is also connected with base
Quasi- voltage Vref2, TGR2It is also connected with clock signal clk；The detection circuit includes capacitance current detection circuit I S1, capacitance current
Detect circuit I S2With adder ADD, IS1And IS2ADD is connected respectively to, ADD is also respectively connected to CMP1And CMP2；The VS1、
VS2、IS1、IS2、DR1And DR2It is connected respectively to the single-inductance double-output switch converters.
Further, the single-inductance double-output switch converters are Buck converters, Boost, Buck-
Boost or Bipolar converters.
Compared with prior art, the beneficial effects of the invention are as follows：
First, compared with existing peak value comparison method single-inductance double-output switch converters, single inductance lose-lose of the invention
Go out switch converters when load changes, the control pulse of energy quick regulation switching tube, output voltage overshoot is small, regulation
Time is short, the load transient better performances of converter.
2nd, compared with existing peak value comparison method single-inductance double-output switch converters, single-inductance double-output of the invention
Switch converters can effectively reduce the cross influence between output branch road, system is stable when output branch circuit load changes
Property is good.
Brief description of the drawings
Fig. 1 is the system construction drawing of the present invention.
Fig. 2 is the circuit structure block diagram when present invention uses Buck converters.
Fig. 3 is the oscillogram that the inductive current used during Buck converters and switching device of the invention control pulse.
Fig. 4 is the control sequential figure of control device of the present invention.
Fig. 5 is the present invention and peak value comparison method single-inductance double-output switch converters respectively in output branch road a and b load
Transient state time-domain-simulation waveform during change.Wherein, Fig. 5 a are that peak value comparison method single-inductance double-output switch converters are exporting
Transient response waveform during branch road a load changes, Fig. 5 b are transient response ripple of the present invention when exporting branch road a load changes
Shape；Fig. 5 c are transient response ripple of the peak value comparison method single-inductance double-output switch converters when exporting branch road b load changes
Shape, Fig. 5 d are transient response waveform of the present invention when exporting branch road b load changes.
Embodiment
Capacitance current ripple control, its basic thought are：Control circuit equally includes outer voltage and current inner loop, voltage
Outer shroud by the output voltage of detection compared with reference voltage, obtained error signal conduct after error amplifier compensates
The reference current of current inner loop, current inner loop detect capacitance current and compared with reference currents, and comparative result is used for controlling
The shut-off of switching tube；The conducting of clock signal controlling switch pipe.Capacitance current can directly reflect the change of load current, when negative
When carrying curent change, control circuit can quick regulation, therefore capacitance current ripple control single-inductor dual-output converter has
The advantages of output cross influence is small, and load transient performance is good.
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in figure 1, a kind of embodiment of the present invention is：Single-inductance double-output switch converters capacitance current line
Ripple control method and its device, by converter TD and switching tube S1、S2Control device composition.Its control device is mainly by electric capacity
Current ripples controller CTR1And CTR2Composition.Capacitance current ripple control device CTR1By voltage detecting circuit VS1, capacitance current
Detect circuit I S1, capacitance current detection circuit I S2, adder ADD, reference voltage Vref1, error amplifier EAP1, comparator
CMP1, rest-set flip-flop TGR1, drive circuit DR1, clock signal clk composition；Capacitance current ripple control device CTR2By voltage detecting
Circuit VS2, capacitance current detection circuit I S1, capacitance current detection circuit I S2, adder ADD, reference voltage Vref2, error puts
Big device EAP2, comparator CMP2, rest-set flip-flop TGR2, drive circuit DR2, clock signal clk composition.Wherein, voltage detecting circuit
VS1、VS2It is respectively used to obtain output voltage Voa、Vob, capacitance current detection circuit I S1、IS2It is respectively used to obtain capacitance current
Ic1、Ic2, adder ADD is for obtaining total capacitance current, error amplifier EAP1、EAP2It is respectively used to obtain reference current
Vc1、Vc2, comparator CMP1、CMP2It is respectively used to obtain rest-set flip-flop TGR1、TGR2R ends input signal, clock signal clk make
For rest-set flip-flop TGR1、TGR2S ends input signal, rest-set flip-flop TGR1、TGR2Q ends output signal be used for obtain switching tube S1
And S2Control signal, via drive circuit DR1、DR2The conducting and shut-off of controlling switch converter TD switching tubes.
The converter TD of this example is Buck converters, and its working process and principle is：
Control device is using the working process and principle of capacitance current ripple control：Fig. 2 is shown, in any a cycle
Initial time, clock signal clk make rest-set flip-flop TGR1、TGR2Set, rest-set flip-flop TGR1、TGR2Q end signals pass through driving
Circuit DR1、DR2Main switch S is controlled respectively1With branch switch pipe S2Conducting.Control circuit sampling and outputting voltage VoaAnd electric capacity
Electric current Ic1、Ic2；Output voltage VoaWith reference voltage Vref1Comparative result pass through error amplifier EAP1After obtain reference current
Vc1；Capacitance current Ic1、Ic2Total capacitance current I is obtained by adder ADDc；IcWith Vc1Pass through comparator CMP1Compare to obtain
Rest-set flip-flop TGR1R ends input signal, generation branch switch pipe S1Cut-off signals be connected to drive circuit DR1Input,
DR1Output end be connected to branch switch pipe S1Gate pole control terminal, controlling switch pipe S1Shut-off.Control circuit sampling output
Voltage VobWith capacitance current Ic1、Ic2；Output voltage VobWith reference voltage Vref2Comparative result pass through error amplifier EAP2Afterwards
Obtain reference current Vc2；Capacitance current Ic1、Ic2Total capacitance current I is obtained by adder ADDc；IcWith Vc2Pass through comparator
CMP2Compare to obtain rest-set flip-flop TGR2R ends input signal, generation main switch S2Cut-off signals be connected to drive circuit
DR2Input, DR2Output end be connected to main switch S2Gate pole control terminal, controlling switch pipe S2Shut-off.
Fig. 3 show the work schedule and inductive current oscillogram that Fig. 2 circuits work in continuous current mode conduction mode.
In d1TsIn time, S1And S2Conducting, D1And D2Shut-off, inductive current is by exporting branch road a with charging ramp (Vin-VoaOn)/L
Rise.In (d2-d1)TsIn time, S2And D2Conducting, S1And D1Shut-off, inductive current is by exporting branch road b with charging ramp (Vin-
Vob)/L continues to rise.In (1-d2)TsIn time, D1And D2Conducting, S1And S2Shut-off, inductive current is by exporting branch road b to put
Electric slope-Vob/ L declines, until circuit enters next switch periods.
Fig. 4 show the control sequential figure of control device.In the initial time of each switch periods, clock signal clk makes
Trigger RS-trigger1, RS-trigger2 set, control signal d1、d2For high level, switching tube S1、S2Conducting, diode
D2Shut-off；Capacitance current ICLinear rise.As capacitance current ICRise to error voltage Vc1When, control signal d1For low level, open
Close pipe S1Shut-off, diode D2Conducting, switching tube S2It is held on, capacitance current ICContinue linear rise.As capacitance current ICOn
Rise to error voltage Vc2When, control signal d2For low level, switching tube S2Shut-off, switching tube S1It is held off, diode D2Keep
Conducting, capacitance current ICLinear decline.
Time-domain-simulation analysis is carried out to the method for the present invention with PSIM simulation softwares, it is as a result as follows.
Fig. 5 is to be implemented on single-inductance double-output Buck converters using peak value comparison method and the present invention to bear in output branch road
The time-domain-simulation oscillogram of output voltage and output current when carrying mutation, Fig. 5 a, Fig. 5 b correspond to peak value comparison method and electricity respectively
During the output branch road a load change of capacitance current ripple control single-inductance double-output Buck converters output voltage and output current when
Domain simulation waveform, Fig. 5 c, Fig. 5 d correspond to peak value comparison method respectively and capacitance current ripple control single-inductance double-output Buck becomes
Output voltage and the time-domain-simulation waveform of output current during parallel operation output branch road b load changes.In Fig. 5 a, Fig. 5 b, peak point current
Single-inductance double-output Buck converters and capacitance current ripple control single-inductance double-output Buck converters is controlled to export branch road a's
Output current IoaFrom 60mA mutation to 90mA, output branch road b output current IobFor 3.3A when, peak value comparison method list inductance
Dual output Buck converters output branch road a output voltage VoaEnter new stable state after about 3ms, overshoot 80mV is defeated
Out branch a is 100mV to the cross influence for exporting branch road b；And use the capacitance current ripple control list inductance lose-lose of the present invention
It is about 2ms, overshoot 40mV to go out Buck switch converters into the adjustment time of new stable state, and output branch road a is to output branch
Road b cross influence very little.In Fig. 5 c, Fig. 5 d, peak value comparison method single-inductance double-output Buck converters and capacitance current line
Ripple control single-inductance double-output Buck converter output branch roads b output current IobFrom 3.3A mutation to 3.6A, output branch road b's
Output current IobFor 60mA when, peak value comparison method single-inductance double-output Buck converters output branch road a output voltage VoaThrough
Enter new stable state, overshoot 90mV after crossing about 3ms, output branch road b is 50mV to the cross influence for exporting branch road a；And adopt
Almost just enter newly steady without regulation process with the capacitance current ripple control single-inductance double-output Buck converters of the present invention
State, output branch road b are minimum to the cross influence for exporting branch road a.It can be seen that switch converters output voltage transient state overshoot of the invention
Measure small, regulating time is short, and load transient performance is good, and the cross influence exported between branch road is small.Fig. 4 simulated conditions are input electricity
Press Vin=10V, voltage reference value Vref1=1.8V, Vref2=3.3V, inductance L=100 μ H, electric capacity C1=470 μ F, C2=220 μ
F, load resistance Ra=3 Ω, Rb=1 Ω.
In the present invention, converter TD can also be Boost, One Buck-Boost converter body or Bipolar converters.
Claims (4)
1. single-inductance double-output switch converters capacitance current ripple control method, it is characterised in that
Capacitance current ripple control device CTR1Detect the single-inductance double-output switch converters output voltage Voa, and pass through detection
Electric circuit inspection capacitance current Ic1With capacitance current Ic2, produce control pulse Vgs1, to control single-inductance double-output switch change-over
Branch switch pipe S in device1Conducting and shut-off；
Capacitance current ripple control device CTR2Detect the single-inductance double-output switch converters output voltage Vob, and pass through detection
Electric circuit inspection capacitance current Ic1With capacitance current Ic2, produce control pulse Vgs2, to control single-inductance double-output switch change-over
Main switch S in device2Conducting and shut-off.
2. the method as described in claim 1, it is characterised in that
The control pulse Vgs1Generation method be：Output voltage VoaWith voltage reference value Vref1By error amplifier EAP1
Produce the error signal V of amplificationc1It is sent into comparator CMP1Negative input end, capacitance current Ic1With capacitance current Ic2By addition
Device ADD obtains total capacitance current IcIt is sent into comparator CMP1Positive input terminal；IcAnd Vc1Comparative result be sent into rest-set flip-flop
TGR1R ends, controlling brancher switching tube S1Shut-off；Clock signal clk is sent into rest-set flip-flop TGR1S ends, controlling brancher switch
Pipe S1Conducting；The control pulse Vgs2Generation method be：Output voltage VobWith voltage reference value Vref2Amplify by error
Device EAP2Produce the error signal V of amplificationc2It is sent into comparator CMP2Negative input end, capacitance current Ic1With capacitance current Ic2By
Adder ADD obtains total capacitance current IcIt is sent into comparator CMP2Positive input terminal；IcAnd Vc2Comparative result be sent into RS triggering
Device TGR2R ends, control main switch S2Shut-off；Clock signal clk is sent into rest-set flip-flop TGR2S ends, control main switch
S2Conducting.
3. single-inductance double-output switch converters capacitance current ripple control device, it is characterised in that：Including capacitance current ripple
Controller CTR1, capacitance current ripple control device CTR2With detection circuit；
The capacitance current ripple control device CTR1Including the voltage detecting circuit VS being sequentially connected1, error amplifier EAP1, ratio
Compared with device CMP1, rest-set flip-flop TGR1With drive circuit DR1；EAP1It is also connected with reference voltage Vref1, TGR1It is also connected with clock signal
CLK；
The capacitance current ripple control device CTR2Including the voltage detecting circuit VS being sequentially connected2, error amplifier EAP2, ratio
Compared with device CMP2, rest-set flip-flop TGR2With drive circuit DR2；EAP2It is also connected with reference voltage Vref2, TGR2It is also connected with clock signal
CLK；
The detection circuit includes capacitance current detection circuit I S1, capacitance current detection circuit I S2With adder ADD, IS1And IS2
ADD is connected respectively to, ADD is also respectively connected to CMP1And CMP2；
The VS1、VS2、IS1、IS2、DR1And DR2It is connected respectively to the single-inductance double-output switch converters.
4. device as claimed in claim 3, it is characterised in that the single-inductance double-output switch converters convert for Buck
Device, Boost, One Buck-Boost converter body or Bipolar converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216136.6A CN107769532B (en) | 2017-11-28 | 2017-11-28 | Single-inductance double-output switch converters capacitance current ripple control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711216136.6A CN107769532B (en) | 2017-11-28 | 2017-11-28 | Single-inductance double-output switch converters capacitance current ripple control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107769532A true CN107769532A (en) | 2018-03-06 |
| CN107769532B CN107769532B (en) | 2019-11-29 |
Family
ID=61276345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711216136.6A Expired - Fee Related CN107769532B (en) | 2017-11-28 | 2017-11-28 | Single-inductance double-output switch converters capacitance current ripple control method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107769532B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661422A (en) * | 2019-10-26 | 2020-01-07 | 西南民族大学 | Ripple control method and device for single-inductor double-output switching converter |
| WO2022021505A1 (en) * | 2020-07-27 | 2022-02-03 | 张金路 | Digital power amplifier for current feedback self-excited oscillation audio of filter capacitor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475216A (en) * | 2013-09-05 | 2013-12-25 | 成都芯源系统有限公司 | Power converter, clock module, control circuit and related control method |
| CN103618455A (en) * | 2013-12-10 | 2014-03-05 | 东南大学 | Method for reducing steady state error of output voltage of single-inductor double-output converter and circuit |
| CN104638913A (en) * | 2015-02-27 | 2015-05-20 | 西南交通大学 | Double-loop voltage type PFM (Pulse Frequency Modulation) control method for single-inductor double-output switch transformer and device for double-loop voltage type PFM control method |
| CN106208684A (en) * | 2016-08-24 | 2016-12-07 | 西南交通大学 | The pseudo-combined dynamic afterflow control method of continuous conduction mode single-inductance double-output switch converters and device thereof |
| CN106253666A (en) * | 2016-08-25 | 2016-12-21 | 西南交通大学 | Single-inductance double-output switch converters method for controlling frequency conversion and control device thereof |
| CN106300964A (en) * | 2016-08-24 | 2017-01-04 | 西南交通大学 | Independent charge and discharge sequential single-inductance double-output switch converters method for controlling frequency conversion and device thereof |
-
2017
- 2017-11-28 CN CN201711216136.6A patent/CN107769532B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475216A (en) * | 2013-09-05 | 2013-12-25 | 成都芯源系统有限公司 | Power converter, clock module, control circuit and related control method |
| CN103618455A (en) * | 2013-12-10 | 2014-03-05 | 东南大学 | Method for reducing steady state error of output voltage of single-inductor double-output converter and circuit |
| CN104638913A (en) * | 2015-02-27 | 2015-05-20 | 西南交通大学 | Double-loop voltage type PFM (Pulse Frequency Modulation) control method for single-inductor double-output switch transformer and device for double-loop voltage type PFM control method |
| CN106208684A (en) * | 2016-08-24 | 2016-12-07 | 西南交通大学 | The pseudo-combined dynamic afterflow control method of continuous conduction mode single-inductance double-output switch converters and device thereof |
| CN106300964A (en) * | 2016-08-24 | 2017-01-04 | 西南交通大学 | Independent charge and discharge sequential single-inductance double-output switch converters method for controlling frequency conversion and device thereof |
| CN106253666A (en) * | 2016-08-25 | 2016-12-21 | 西南交通大学 | Single-inductance double-output switch converters method for controlling frequency conversion and control device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110661422A (en) * | 2019-10-26 | 2020-01-07 | 西南民族大学 | Ripple control method and device for single-inductor double-output switching converter |
| WO2022021505A1 (en) * | 2020-07-27 | 2022-02-03 | 张金路 | Digital power amplifier for current feedback self-excited oscillation audio of filter capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107769532B (en) | 2019-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103605035B (en) | The no load detection circuit structure of self-adaption switch electric power source | |
| CN102946195B (en) | Switching regulaor and control method thereof | |
| CN105406713A (en) | High-accuracy and fast-transient response control circuit | |
| CN101764520B (en) | DC-DC control circuit with large range of load current | |
| CN106208684B (en) | A kind of combined control method of single-inductance double-output switch converters and its device | |
| CN104638913B (en) | Single-inductance double-output switch converters bicyclic voltage-type PFM control and its device | |
| CN206962700U (en) | Buck converter load current detection circuits without external sampling resistance | |
| CN104660033B (en) | Continuous conduction mode single-inductance double-output switch converters method for controlling frequency conversion and its device | |
| CN103269161B (en) | Constant-current output BUCK power circuit | |
| CN103296883B (en) | A kind of wide input voltage wide loading range straight convertor control method and device thereof | |
| CN103326546A (en) | Fixed turn-off time peak current type pulse sequence control method and fixed turn-off time peak current type pulse sequence control device | |
| CN103166489A (en) | Control circuit for three-phase high power factor rectifier | |
| CN104716836A (en) | Control circuit and method for switching power converter | |
| CN104467406A (en) | Led constant current driver | |
| CN107769532B (en) | Single-inductance double-output switch converters capacitance current ripple control method and device | |
| CN106787730B (en) | Control method and control circuit of switching circuit and switching circuit | |
| CN102570812A (en) | Multi-function terminal of power supply controller for feedback signal input and over-temperature protection | |
| CN104702108A (en) | Critical continuous boost converter employing constant-frequency control | |
| CN111211671A (en) | Double-output voltage ripple control method and device for single-inductor double-output switch converter | |
| CN104796003A (en) | Calculating circuit for output current under DCM (discontinuous conducting mode) of flyback PWM (pulse width modulation) converter | |
| CN107979266B (en) | Single-inductance double-output switch converters voltage-type-capacitance current ripple mixing control method and device | |
| CN103501114B (en) | There is the anti exciting converter of critical conduction mode | |
| CN105186861B (en) | Pseudo- continuous conduction mode switch converters determine afterflow Duty ratio control method and its device | |
| CN203387422U (en) | High-efficiency numerical-control voltage-stabilized power supply | |
| CN108964439A (en) | Switch converters and its control method and controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191129 Termination date: 20201128 |