CN103532378B - Suppression output voltage crosses the electric pressure converter of punching - Google Patents
Suppression output voltage crosses the electric pressure converter of punching Download PDFInfo
- Publication number
- CN103532378B CN103532378B CN201210231992.XA CN201210231992A CN103532378B CN 103532378 B CN103532378 B CN 103532378B CN 201210231992 A CN201210231992 A CN 201210231992A CN 103532378 B CN103532378 B CN 103532378B
- Authority
- CN
- China
- Prior art keywords
- voltage
- voltage level
- compensation network
- electric pressure
- pressure converter
- 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.)
- Active
Links
- 238000004080 punching Methods 0.000 title claims abstract description 12
- 230000001629 suppression Effects 0.000 title description 3
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 230000011664 signaling Effects 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The present invention discloses a kind of electric pressure converter suppressing output voltage to cross punching, and it produces an output voltage in order to receive an input voltage with regulation.In an embodiment of the present invention, this electric pressure converter comprises an error amplifier, compensation network and a selection circuit.This error amplifier has the normal phase input end of reception reference voltage, receives an inverting input of the feedback voltage being associated with this output voltage and provide the outfan of an error voltage.This compensation network is in order to compensate the degree of stability of this error amplifier.This selection circuit in order to the voltage level according to this error voltage to be selectively connected this compensation network to this outfan of this error amplifier.When running, when the voltage level of this feedback voltage is less than the voltage level of this reference voltage, this compensation network is not attached to this outfan of this error amplifier, and when the voltage level of this feedback voltage is substantially equal to the voltage level of this reference voltage, this compensation network is connected to this outfan of this error amplifier.
Description
Technical field
The present invention is about a kind of electric pressure converter suppressing output voltage to cross the situation of punching.
Background technology
Dc-dc electric pressure converter may be used to become an input voltage regulation one stable output voltage, uses supply
Electric current needed for load.It is said that in general, dc-dc electric pressure converter divides according to the size of input voltage and output voltage values
For pressure boosting type electric voltage converter (boost converter), buck electric pressure converter (buck converter) and buck
Formula electric pressure converter (buck-boost converter).Fig. 1 illustrates the framework of a typical pressure boosting type electric voltage converter 10 and shows
It is intended to.With reference to Fig. 1, this pressure boosting type electric voltage converter 10 comprises input capacitance CIN, an inductance L, two switch SW1And SW2, one defeated
Go out electric capacity COUTAnd a control circuit 12.This control circuit 12 is in order to provide control two switch SW1And SW2Two driving signal D1With
D2So that switch SW1And SW2Can be alternately turned on and be closed.
With reference to Fig. 1, this control circuit 12 comprise an error amplifier 122, compensate network 124, comparator 126 and
One pulse width modulation (Pulse Width Modulation, PWM) circuit 128.This pressure boosting type electric voltage converter 10 also comprises
One bleeder circuit 14, it is in order to detect output voltage VOUTChange.This bleeder circuit 14 is by two series resistances R1And R2By defeated
Go out voltage VOUTCarry out dividing potential drop to produce corresponding feedback voltage VFB.Then, according to reference voltage VREFAnd feedback voltage VFBIt
Between voltage difference, this error amplifier 122 produces a corresponding output voltage VE.This comparator 126 is put in relative error
The output voltage V that big device 10 transmitsEWith sawtooth signal VSAWAfter, produce a pulse signal.This pulse signal is sent to this
Pwm circuit 128 is to produce corresponding driving signal D1And D2.By driving signal D1And D2It is turned on and off switching SW1And SW2
And inductance L is charged or discharges, this pressure boosting type electric voltage converter 10 can produce required load current and stable defeated
Go out voltage.
In order to compensate the degree of stability of this error amplifier 122, the outfan of this error amplifier 122 can be connected to this compensation
Network 124, to compensate output voltage VE.But, at the system start-up initial stage, it is limited to the response time of this compensation network 124, should
Pressure boosting type electric voltage converter 10 can produce output voltage and cross the situation of punching (overshoot).Fig. 2 illustrates the conversion of this boosted voltage
The device 10 oscillogram when start.With reference to Fig. 2, at system start-up initial stage (t < tSTART) time, due to output voltage VECannot be quick
Arrive a stable voltage level, therefore can produce sizable inductive current I when startL, and output voltage VOUTHad
The phenomenon of punching.Load elements may be caused damage by this overshoot voltage.
Therefore, it is necessary to propose a kind of electric pressure converter suppressing output voltage to cross the situation of punching, to solve system boot
Time potential problems.
Summary of the invention
It is an object of the invention to provide a kind of electric pressure converter suppressing output voltage to cross the situation of punching, it is defeated in order to receive one
Enter voltage and produce an output voltage with regulation.
For reaching above-mentioned purpose, an embodiment of the electric pressure converter of the present invention comprises an error amplifier, a compensation
Network and a selection circuit.This error amplifier has and receives a normal phase input end of a reference voltage, receives that to be associated with this defeated
Go out an inverting input of a feedback voltage of voltage and the outfan of an error voltage is provided.This compensation network is in order to compensate this
The degree of stability of error amplifier.This selection circuit in order to the voltage level according to this error voltage to be selectively connected this compensation
Network is to this outfan of this error amplifier.When running, when the voltage level of this feedback voltage is less than this reference voltage
During voltage level, this compensation network is not attached to this outfan of this error amplifier, and when the voltage level of this feedback voltage
When being substantially equal to the voltage level of this reference voltage, this compensation network is connected to this outfan of this error amplifier.
Accompanying drawing explanation
Fig. 1 illustrates the configuration diagram of a typical pressure boosting type electric voltage converter；
Fig. 2 illustrates this pressure boosting type electric voltage converter oscillogram when start；
Fig. 3 shows that combining the suppression output voltage of one embodiment of the invention crosses the configuration diagram of electric pressure converter of the situation of punching；
Fig. 4 shows the thin portion circuit diagram of the selection circuit combining one embodiment of the invention；
Fig. 5 shows the thin portion circuit diagram of the selection circuit combining another embodiment of the present invention；And
Fig. 6 shows the thin portion circuit diagram of the selection circuit combining further embodiment of this invention.
[main element label declaration]
10 pressure boosting type electric voltage converter 12 control circuits
122 error amplifiers 124 compensate network
126 comparator 128 pwm circuits
14 bleeder circuit 30 electric pressure converters
32 control circuit 322 error amplifiers
324 selection circuit 3242 signaling conversion circuits
3244～3252 switch 3254 voltage clamp
325 compensate network 326 comparator
328 pwm circuit 34 bleeder circuits
CIN,COUT,C1,C2,CCElectric capacity I1,I2,ICONSTCurrent source
L,L1Inductance M1,M2Transistor
R1,R2,RA,RB,RCResistance SW1,SW2,SWA,SWBSwitch
X1～X2Phase inverter
Detailed description of the invention
The present invention is a kind of electric pressure converter in order to suppress output voltage to cross the situation of punching in this direction inquired into.In order to
The present invention can be understood up hill and dale, detailed step and structure will be proposed in following description.It is apparent that the execution of the present invention is also
It is not defined in specific details familiar to those skilled in the art.On the other hand, it is thus well known that structure or step do not describe
In details, to avoid the restriction causing the present invention unnecessary.Presently preferred embodiments of the present invention will be described in detail as follows, but removes
Outside these describe in detail, the present invention can also implement in other embodiments widely, and the scope of the present invention is not subject to
Limiting, it is as the criterion with above-mentioned the scope of the claims.
Fig. 3 shows that the framework of the electric pressure converter 30 suppressing output voltage to cross the situation of punching combining one embodiment of the invention shows
It is intended to.This electric pressure converter 30 is in order to receive an input voltage VINAn output voltage V is produced with regulationOUT.With reference to Fig. 3, this voltage
Transducer 30 comprises input capacitance C1, an inductance L1, two switch SWAAnd SWB, output capacitance C2And a control circuit 32.Should
Control circuit 32 is in order to provide control switch SWAAnd SW2Two driving signal DAAnd DBSo that switch SWAAnd SWBCan be by alternately
Turn on and off.
With reference to Fig. 3, this control circuit 32 comprise error amplifier 322, selection circuit 324, comparator 326 and
One pwm circuit 328.This error amplifier 322 has reception one reference voltage VREFA normal phase input end, receive be associated with this
Output voltage VOUTA feedback voltage VFBAn inverting input and provide an error voltage VEAOutfan.In order to compensate this
The loop stability degree of error amplifier 322, one compensates network 325 is connected to this error amplifier 322 by this selection circuit 324
Outfan, to compensate this error voltage VEA.Fig. 4 shows the thin portion circuit of the selection circuit 324 combining one embodiment of the invention
Figure.With reference to Fig. 4, this selection circuit 324 comprises signaling conversion circuit 3242 and a switch 3244.This signaling conversion circuit 3242
In order to according to this error voltage VEAVoltage level to produce a logical signal S1, this switch 3244 is then according to this logical signal S1
To be selectively connected this compensation network 325 to the outfan of this error amplifier 322.
With reference to Fig. 3, this comparator 326 has reception one sawtooth signal VSAWA normal phase input end, receive this error electricity
Pressure VEAAn inverting input and provide a pulse signal VPULOutfan.This pwm circuit 328 is receiving this pulse signal VPUL
After, produce two driving signal DAAnd DBTo control two switch SWAAnd SWB, use and make switch SWAAnd SWBCan be alternately turned on and
Close.
The operation principle of this electric pressure converter 30 now coordinates Fig. 3 and Fig. 4 to be described as follows.When this electric pressure converter 30 operates on
During normal mode, a stable voltage V can be exportedOUT, and its voltage level is more than input voltage VINVoltage level.This voltage
Transducer 30 also comprises a bleeder circuit 34, and it is in order to detect output voltage VOUTChange.This bleeder circuit 34 is by two series connection
Resistance RAAnd RBWith by output voltage VOUTCarry out dividing potential drop, use and produce corresponding feedback voltage VFB.Then, according to reference to electricity
Pressure VREFAnd feedback voltage VFBBetween voltage difference, this error amplifier 322 produces corresponding output voltage VEA.In order to mend
Repay this output voltage VEA, this compensation network 36 can be connected to the defeated of this error amplifier 322 by the conducting of this switch 3244
Go out end.In the present embodiment, this compensation network 325 is by the resistance R connected in a series arrangementCWith an electric capacity CCFormed.So
And, the present invention should be as limit.This compensation network 325 can be by the output and ground being connected to this error amplifier 322
Between a Single Capacitance or other have compensate function compensating element, formed with the compound mode of any serial or parallel connection.
Producing output voltage VEAAfter, this comparator 326 compares this output voltage VEAWith this sawtooth signal VSAWTo produce
Raw this pulse signal VPUL.This pulse signal VPULIt is sent to this pwm circuit 328 to produce corresponding driving signal DAAnd DBWith
Control switch SWAAnd SWB.By being turned on and off switch SWAAnd SWBCarry out charge or discharge inductance L1So that output voltage VOUTEnergy
There is stable voltage level.
When this electric pressure converter 30 operates on normal mode, feedback voltage VFBVoltage level can be close to reference voltage
VREFVoltage level, and the output voltage V of this error amplifier 322EAA fixed value can be maintained according to the size of load current
VEA,stable.But, when this electric pressure converter 30 initial start stage, output voltage V produced by itOUTStill at a fairly low voltage
Level, therefore feedback voltage VFBIts value is close to 0.Now, by the disconnection of this switch 3244 in Fig. 4, this compensation network 325
This outfan of this error amplifier 322 will be not attached to.Therefore, this error amplifier 322 can be equivalent to a comparator, and its
Output voltage VEACan quickly arrive a level maximum so that output voltage VOUTCan increase rapidly.
Along with output voltage VOUTIncrease, this feedback voltage VFBAlso can be gradually increasing by this bleeder circuit 34.When this is anti-
Feedthrough voltage VFBVoltage level rise to close to reference voltage VREFVoltage level time, this signaling conversion circuit 3242 can be defeated
Go out the logical signal S of a transition1So that this switch 3244 turns on.Now, this compensation network 325 will be connected to the amplification of this error
This outfan of device 322, to compensate this error voltage VEA。
In an alternative embodiment of the invention, this compensation network 325 the system boot initial stage can be connected to a constant current source or
One voltage clamp, with the cross-pressure on this compensation network 325 of strangulation.Fig. 5 shows the selection combining another embodiment of the present invention
The thin portion circuit diagram of circuit 324 '.With reference to Fig. 5, this selection circuit 324 ' comprises a signaling conversion circuit 3242 ' and switch 3246
And 3248.This signaling conversion circuit 3242 ' has identical with this signaling conversion circuit 3242 in Fig. 4 or approximation circuit and joins
Put.Additionally, this switch 3246 is according to output signal S of this selection circuit 3242 '2Be selectively connected this compensation network 325 to
The outfan of this error amplifier 322, and this switch 3248 is according to another output signal S of this selection circuit 3242 '3Selectivity
Ground connects this compensation network 325 to one constant current source ICONST.Fig. 6 shows the selection circuit 324 combining further embodiment of this invention "
Thin portion circuit diagram.With reference to Fig. 6, this selection circuit 324 " comprise a signaling conversion circuit 3242 " and switch 3250 and 3252.Should
Signaling conversion circuit 3242 " there is or the circuit configuration of approximation identical with this signaling conversion circuit 3242 in Fig. 4.Additionally, should
Switch is 3250 according to this selection circuit 3242 " output signal S4It is selectively connected this compensation network 325 to amplify to this error
The outfan of device 322, and this switch 3252 is according to this selection circuit 3242 " another output signal S5It is selectively connected this benefit
Repay network 325 to voltage clamp 3254.In the present embodiment, this voltage clamp 3254 is by a constant current source I2With
The transistor M of one gate-source short circuit2Formed.But, the present invention should be as limit.
With reference to Fig. 5, operationally, in this electric pressure converter 30 initial start stage, this feedback voltage VFBVoltage level can be little
In reference voltage VREFVoltage level, therefore the switch 3246 in Fig. 5 can end and switch 3248 and can turn on so that this error
This outfan of amplifier 322 will not be connected to this compensation network 325.Now, this compensation network 325 can be connected to this and determines electric current
Source ICONST.This constant current source ICONSTThis compensation network 325 can be charged so that the voltage V on this compensation network 325C?
This logical signal S2A predetermined value is risen to during transition.This predetermined value is preferably less than or equal to aforementioned fixed value VEA,stable.Cause
This, after this compensation network 325 switches to this outfan of this error amplifier 322, due to the voltage on this compensation network 325
VCIt has been fixed value VEA, stable, this electric pressure converter 30 can comparatively fast enter stable state.Similarly, the constant current source I in Fig. 62Its value
Can be adjusted so that this transistor M2Gate terminal voltage maintain fixed value VEA,stable。
In the above-described embodiments, it is that embodiments of the present invention and effect thereof are described as a example by pressure boosting type electric voltage converter,
But the present invention should not be as limit.For example, buck electric pressure converter and step-down/up type electric pressure converter are owing to having
The control circuit that identical or approximation configures, therefore the present invention also can implement thereon.
The technology contents of the present invention and technical characterstic have revealed that as above, but those skilled in the art are still potentially based on this
Bright teaching and announcement and make all replacements without departing substantially from spirit of the present invention and modification.Therefore, protection scope of the present invention should not
It is limited to those disclosed embodiments, and the various replacement without departing substantially from the present invention and modification should be included, and be above-mentioned claim model
Enclose and contained.
Claims (6)
1. suppress output voltage to cross an electric pressure converter for the situation of punching, produce an output in order to receive an input voltage with regulation
Voltage, this electric pressure converter comprises:
One error amplifier, has and receives a normal phase input end of a reference voltage, receives and be associated with the anti-of this output voltage
One inverting input of feedthrough voltage and the outfan of offer one error voltage；
One compensates network, in order to compensate the degree of stability of this error amplifier；And
One comparator, one second input there is the first input end receiving a sawtooth signal, receiving this error voltage
And the outfan of a pulse signal is provided；
This electric pressure converter is characterised by, also comprises:
One selection circuit, puts to this error to be selectively connected this compensation network in order to the voltage level according to this error voltage
This outfan of big device and this second input of this comparator；
Wherein when the voltage level of this feedback voltage is less than the voltage level of this reference voltage, this compensation network is not attached to this
This outfan of error amplifier and this second input of this comparator, and when the voltage level of this feedback voltage is equal to this ginseng
When examining the voltage level of voltage, it is second defeated that this compensation network is connected to this of this outfan of this error amplifier and this comparator
Enter end.
Electric pressure converter the most according to claim 1, wherein this compensation network packet contains an electric capacity.
Electric pressure converter the most according to claim 1, wherein this selection circuit comprises:
One signaling conversion circuit, in order to produce a logical signal according to the voltage level of this error voltage；
One first switch, in order to be selectively connected this compensation network to this output of this error amplifier according to this logical signal
End and this second input of this comparator.
Electric pressure converter the most according to claim 3, wherein this selection circuit also comprises:
One second switch, in order to be selectively connected a constant current source to this compensation network according to this logical signal；
Wherein when the voltage level of this feedback voltage is less than the voltage level of this reference voltage, this constant current source is to this compensation net
Network is charged so that the voltage level on this compensation network at the voltage level of this feedback voltage equal to the electricity of this reference voltage
A predetermined value is risen to during voltage level.
Electric pressure converter the most according to claim 3, wherein this selection circuit also comprises:
One the 3rd switch, in order to be selectively connected a voltage clamp to this compensation network according to this logical signal；
Wherein this voltage clamp is in order to when the voltage level of this feedback voltage is less than the voltage level of this reference voltage, dimension
Hold the voltage level on this compensation network to a predetermined value.
Electric pressure converter the most according to claim 1, wherein this electric pressure converter is a pressure boosting type electric voltage converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231992.XA CN103532378B (en) | 2012-07-05 | 2012-07-05 | Suppression output voltage crosses the electric pressure converter of punching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210231992.XA CN103532378B (en) | 2012-07-05 | 2012-07-05 | Suppression output voltage crosses the electric pressure converter of punching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103532378A CN103532378A (en) | 2014-01-22 |
| CN103532378B true CN103532378B (en) | 2016-12-21 |
Family
ID=49934141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210231992.XA Active CN103532378B (en) | 2012-07-05 | 2012-07-05 | Suppression output voltage crosses the electric pressure converter of punching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103532378B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104902611B (en) * | 2014-03-07 | 2018-12-07 | 晶豪科技股份有限公司 | Alternating voltage adjustment circuit and light-emitting diode luminance adjustment circuit |
| CN105676929B (en) * | 2014-11-21 | 2017-01-04 | 南方电网科学研究院有限责任公司 | LDO starting circuit capable of preventing output overshoot |
| CN104767362A (en) * | 2015-03-27 | 2015-07-08 | 绵阳豪迈电子科技有限公司 | Parking lot management system drive circuit |
| CN106160158B (en) * | 2015-03-31 | 2018-09-18 | 丁智博 | A kind of power supply device of electric automobile and a kind of motor vehicle |
| CN104852577B (en) * | 2015-06-10 | 2017-06-27 | 上海灿瑞科技股份有限公司 | A kind of decompression DC converter |
| CN104953836B (en) | 2015-07-01 | 2018-02-06 | 英特尔公司 | Step-up converter circuit and step-up converter circuit control method |
| CN107742983B (en) * | 2017-11-29 | 2023-05-26 | 上海南麟电子股份有限公司 | Constant-current constant-voltage control module, voltage reducing circuit and compensation method for sharing compensation |
| CN112532032B (en) * | 2020-11-27 | 2021-10-22 | 成都启臣微电子股份有限公司 | Overshoot prevention circuit for constant voltage control power supply |
| CN113258536B (en) * | 2021-07-08 | 2021-10-01 | 上海芯龙半导体技术股份有限公司南京分公司 | Output overshoot suppression circuit and switching power supply chip |
| CN115378246B (en) * | 2022-09-02 | 2023-04-21 | 芯洲科技(北京)股份有限公司 | Switching power supply with overshoot protection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499717A (en) * | 2009-02-17 | 2009-08-05 | 浙江大学 | Controlling method and apparatus for four switch step-up step-down DC-DC converter |
| TW201106597A (en) * | 2009-08-05 | 2011-02-16 | Upi Semiconductor Corp | DC-DC converter |
| TW201142567A (en) * | 2010-05-25 | 2011-12-01 | Green Solution Tech Co Ltd | Feedback control circuit and power converting circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200828209A (en) * | 2006-12-26 | 2008-07-01 | Beyond Innovation Tech Co Ltd | Control circuit |
-
2012
- 2012-07-05 CN CN201210231992.XA patent/CN103532378B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499717A (en) * | 2009-02-17 | 2009-08-05 | 浙江大学 | Controlling method and apparatus for four switch step-up step-down DC-DC converter |
| TW201106597A (en) * | 2009-08-05 | 2011-02-16 | Upi Semiconductor Corp | DC-DC converter |
| TW201142567A (en) * | 2010-05-25 | 2011-12-01 | Green Solution Tech Co Ltd | Feedback control circuit and power converting circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103532378A (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103532378B (en) | Suppression output voltage crosses the electric pressure converter of punching | |
| US8669748B2 (en) | Device for synchronous DC-DC conversion and synchronous DC-DC converter | |
| US8000117B2 (en) | Buck boost function based on a capacitor bootstrap input buck converter | |
| CN105075090B (en) | Buck-boost converter with buck-boost transition switching control | |
| US8907646B2 (en) | Power converting circuit and feedback control circuit | |
| US9484758B2 (en) | Hybrid bootstrap capacitor refresh technique for charger/converter | |
| CN100514813C (en) | DC-DC converter and dc-dc converter control method | |
| US20150061613A1 (en) | Dc-dc converter and method of controlling dc-dc converter | |
| CN100505495C (en) | DC-DC converter circuit | |
| US20060132997A1 (en) | Apparatus and method for over-voltage and over-current protection for a step-up current-mode converter | |
| CN109004812B (en) | Switch converter and control circuit and control method thereof | |
| CN103683925B (en) | DC-DC controller | |
| CN103053102A (en) | Reducing ripple current in a switched-mode power converter employing a bridge topology | |
| KR101749292B1 (en) | Negative current sense feedback for reverse boost mode | |
| CN103546031A (en) | Voltage converter with slow starting circuit | |
| CN107078643A (en) | The prebias of converter starts | |
| CN212572391U (en) | Electronic circuit | |
| CN102315759B (en) | There is raster data model controller circuitry and the power-up circuit thereof of anti saturation circuit | |
| CN109687705A (en) | A kind of single inductance multi output DC-DC converter based on comparator control | |
| US20110057636A1 (en) | Method for Reducing Energy Loss in DC-DC Converter and Related Control Device and DC-DC Converter | |
| CN202565159U (en) | PFC control circuit capable of boosting flexibly | |
| TWI528692B (en) | Adaptive pre-charge voltage converter | |
| CN103427619A (en) | PFC control circuit capable of boosting flexibly and control method thereof | |
| CN107634651B (en) | Switching power supply | |
| US20180019660A1 (en) | Switching power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |