CN104362846B - A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence - Google Patents
A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence Download PDFInfo
- Publication number
- CN104362846B CN104362846B CN201410551335.2A CN201410551335A CN104362846B CN 104362846 B CN104362846 B CN 104362846B CN 201410551335 A CN201410551335 A CN 201410551335A CN 104362846 B CN104362846 B CN 104362846B
- Authority
- CN
- China
- Prior art keywords
- voltage
- resistance
- circuit
- output
- channel output
- 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
Abstract
In order to solve the problems, such as that the precision of voltage regulation existing for previous multiple-channel output DC/DC converters is low, electrifying timing sequence is difficult to control, the present invention carries the topological structure for giving a kind of controllable multiple-channel output DC/DC converter switches power supplys of electrifying timing sequence, multiple-channel output DC/DC converter switches power supplys using the present invention possess the independent accurate voltage stabilizing of every road output voltage, the controllable advantage of output voltage electrifying timing sequence.In addition, the multiple-channel output DC/DC converter switches power supply of the present invention also has many advantages, such as that circuit is simple and reliable, component number is few, can be applied in the electrical equipment having higher requirements to output voltage precision and electrifying timing sequence.
Description
Technical field
The present invention relates to field of switch power more particularly to a kind of multi-channel output directs of controllable output voltage electrifying timing sequence
Stream-DC converter.
Background technology
Current electronic equipment is more and more stringenter to the power supply quality requirement of Switching Power Supply, such as the confession for multiple-channel output
Power supply often requires that its output voltage per road is both needed to reach 1% stability.Simultaneously to the electrifying timing sequence of output voltage
It clearly requires, such as the four road out-put supply systems for+3.3V, a 5V and ± 12V, it is desirable that its+3.3V kernel
Supply voltage will start at first, followed by -12V supply voltages, be then only+5V and+12V just starts successively.
Patent document 1（China Patent Publication No.：A kind of multi-channel output DC-DC inverters of CN101521460A）Using
In high-power output occasion, Sofe Switch is realized by phase shift adjusting so that power supply it is efficient, simple in structure.But not
It is related to the multiple-output electric power of middle low power, be not also related to multiple-channel output power-on time sequence control circuit and reaches every road output
The system structure of the accurate voltage stabilizing of energy.Patent document 2（China Patent Publication No.：A kind of DC converters of CN101197540A）It is logical
Addition soft switch technique and synchronous rectification are crossed, makes the efficient of power supply, rapid dynamic response speed, ripple small, EMC performances
It is good, while reduce the quantity of magnetic element, improve power density.But the document is directed to the power supply of single channel output, and
The sequential control circuit being directed to mainly carries out the phase shifting control of pwm signal.Patent document 3（China Patent Publication No.：
CN101345479A, the digital DC/DC flybacks of no light-coupled isolation become device and control method）Although being related to multiple-channel output,
There is no power-on time sequence control circuit, be unable to control in multiple-channel output per the sequential established all the way.
By analysis above as it can be seen that traditional single-chip control multiple-channel output DC/DC converters are due to there was only one in system
A main PWM controls switch, therefore multiple-channel output voltage can only be established simultaneously, can not realize electrifying timing sequence control.If it realizes
The upper electric control of multiple-channel output voltage can only be combined using multiple independent DC/DC converters, then respectively it be controlled to open
The dynamic time.This can cause entire power circuit excessively complicated, all be subject to what is more strictly limited suitable for application in size and weight
In middle low power DC/DC converters.Multiple independent DC/DC converters are combined it is also contemplated that synchronous, beat frequency interference etc.
Problem increases the complexity of design.
The content of the invention
In order to solve, the precision of voltage regulation existing for previous multiple-channel output DC/DC converters is low, electrifying timing sequence is difficult to control asks
Topic, the present invention propose one kind and are suitable for multiple-channel output DC/DC DC converter Switching Power Supplies, and it is only to possess every road output voltage
Found accurate voltage stabilizing, the controllable advantage of output voltage electrifying timing sequence.
In order to achieve the above object, this invention takes following technical schemes：
The controllable multi-channel output DC-DC inverter of a kind of electrifying timing sequence, including prime DC/DC converter topologies electricity
Road, sequential control circuit 2 to n, rear class regulator circuit 2 to n, above-mentioned three parts circuit are connected in the form of cascade；The prime
Input voltage is converted into the preceding step voltage 1 of the multiple-channel output being isolated from it to preceding step voltage n by DC/DC converter topologies circuit；
Wherein preceding step voltage 1 is main output voltage, and prime DC/DC converter topologies circuit samples preceding step voltage 1, and completes closed loop control
System, and this road output voltage is established at first；Step voltage 2 is to n before the sequential control circuit 2 connects respectively to n, by right
The setting of the sequential control circuit parameter makes each road output voltage after sequential control circuit lag behind prime respectively
1 regular hour of voltage；The rear class regulator circuit 2 connects the sequential control circuit 2 to n to n respectively, and stability is relatively low
Prime voltage stabilization to predetermined stability, as final output voltage 2 to n.
Further, the prime DC/DC converter topologies circuit according to the size of input voltage, output power it is big
The requirement of small, volume weight, efficiency makes choice, using normal shock, flyback or push-pull topology circuit.
Further, use for prime DC/DC converter topologies circuit described in low-power applications occasion and controlled by single PWM
Prime DC/DC converter topology circuits.
Further, the sequential control circuit is made of switching tube Q1, Q2 and its peripheral circuit;Switching tube Q1 is by joining
Voltage control triggering and conducting is examined, passes through shunt capacitance so that Q1 is slowly turned on；Q2 conductings are triggered after Q1 conductings, pass through electricity in parallel
Hold so that Q2 is slowly turned on；After Q2 is fully on, input voltage is just gradually built up.Wherein, reference voltage is to be connected to
The input voltage external control signal of Q2 front ends or a datum of power source internal.
The beneficial effects of the invention are as follows：The present invention solves the precision of voltage regulation existing for previous multiple-channel output DC/DC converters
The problem of low, electrifying timing sequence is difficult to control, it is defeated to possess every road to multiple-channel output DC/DC DC converter Switching Power Supplies of the invention
Go out the independent accurate voltage stabilizing of voltage, the controllable advantage of output voltage electrifying timing sequence.In addition, the multiple-channel output DC/DC of the present invention
DC converter Switching Power Supply also has many advantages, such as that circuit is simple and reliable, component number is few, can be applied to output voltage essence
In the electrical equipment that degree and electrifying timing sequence have higher requirements.
Description of the drawings
Fig. 1 is the block diagram of the controllable multi-channel output DC-DC inverter of the electrifying timing sequence of the present invention；
Fig. 2 is the first embodiment circuit diagram of sequential control circuit in multi-channel output DC-DC inverter of the invention；
Fig. 3 is the oscillogram of several key points of the sequential control circuit of Fig. 2；
Fig. 4 is the second embodiment circuit diagram of sequential control circuit in multi-channel output DC-DC inverter of the invention.
Specific embodiment
The present invention is further described for explanation and specific embodiment below in conjunction with the accompanying drawings.
Such as attached drawing 1, the controllable multi-channel output DC-DC inverter of electrifying timing sequence of the invention can be divided into three parts,
Three parts circuit is connected in the form of cascade：First portion is a prime DC/DC converter controlled by single pwm chip
Topological circuit, its function are that input voltage is converted into the preceding step voltage 1 of the multiple-channel output being isolated from it to preceding step voltage n.
Wherein preceding step voltage 1 is also main output voltage, and prime DC/DC converter topologies circuit samples preceding step voltage 1, and completes closed loop
Control so that the stability of preceding step voltage 1 reaches 1%, and this road output voltage is established at first.Core is controlled using single PWM
The prime DC/DC converter topologies circuit of piece can reduce design complexities, reduce number of devices, suitable for opening for middle low power
Powered-down source.Preceding step voltage 2 is coupling control to n, therefore its stability is unable to reach 1%, settling time and preceding step voltage 1 one
It causes.
Second portion for sequential control circuit 2 to n, made by the setting of circuit parameter after sequential control circuit
Each road output voltage lags behind preceding 1 regular hour of step voltage respectively.It is realized by this partial circuit to preceding step voltage 2 to prime
Voltage n establishes the control in sequential.
Part III for rear class regulator circuit 2 to n, it can be by the stabilization of the relatively low prime voltage stabilization to 1% of stability
Degree, as final output voltage 2 to n.
Wherein, prime DC/DC converter topologies circuit can be according to the size, the size of output power, volume of input voltage
The requirement of weight, efficiency etc. makes choice, such as normal shock, flyback, push-pull topology etc..It can be with for low-power applications occasion
Using the multiple-channel output topology of single PWM controls.
Attached drawing 2 gives second portion --- the one of sequential control circuit of the multiple-channel output DC/DC converters of the present invention
A specific embodiment, it is mainly made of switching tube Q1, Q2 and its peripheral circuit.Q1 controls triggering and conducting by reference voltage, this
Reference voltage may be coupled to the input voltage of Q2 front ends or one of external control signal or power source internal
Datum.Set reference voltage level it is identical may insure multiple-channel output electrifying timing sequence it is more accurate.Reference voltage passes through electricity
Resistance R1 and R2 is divided, and generates the level that can trigger Q1 conductings.C1 is in parallel with R2, due to the presence of C1, the electricity at R2 both ends
Pressure is a process slowly established, therefore Q1 can also postpone just turn on for a period of time after reference voltage is fed.Q1 is turned on
After can be grounded R4, so as to trigger Q2 conducting, set R5 and R4 resistance value so that it can reliably trigger Q2 conducting.C2 and R5 is simultaneously
Connection, since the voltage there are R5 of C2 is also slowly to establish, so that Q2 is slowly turned on, has achieved the purpose that soft start.Q2
After fully on, input voltage is just gradually built up.
Attached drawing 3 gives the waveform diagram of each key point in 2 circuit of attached drawing.It can be seen that output voltage and input voltage
Sequential relationship, delay time t1 and the foundation of output voltage can be controlled by the value for adjusting R1, R2, C1 and R4, R5, C2
Time t2.Q1 and Q2 can select switch mosfet pipe or triode, corresponding driving circuit according to the actual needs of circuit
Certain adjustment can be done as needed.Such as diode D1, the resistance R3 in attached drawing 2 are to improve the driving of Q1 switching tubes electricity
Pressure and electric current, prevent noise or other interference signals from Q1 being caused to mislead.The pipe Q1 that opens the light in attached drawing 2 is NPN triode and Q2
For P-channel MOSFET.In practical applications can be as needed, flexibly select N-channel, tri- pole of P-channel MOSFET, NPN or PNP
The electronically or mechanically control switch of pipe or other forms.Attached drawing 4 is another example of sequence circuit in the present invention.
In attached drawing 2, switching tube Q1 is NPN triode, and switching tube Q2 manages for P-channel MOSFET；A termination of R1 is with reference to electricity
Pressure, a termination R1 of another termination R2, R2, other end ground connection；Reference voltage pass through resistance R1, R2 partial pressure, one end of R2 with
Q1 base stages are connected, and other end ground connection, capacitance C1 is in parallel with R2, the emitter ground connection of Q1；The source electrode of Q2 is connected with input voltage, leakage
Pole is connected with output voltage, and grid is connected by resistance R4 with the collector of Q1；One end of resistance R5 is connected with input voltage, separately
One end is connected with the grid of Q2, and capacitance C2 is in parallel with R5；Reference voltage is divided by resistance R1 and R2, and generation can trigger
The level of Q1 conductings；Due to the presence of C1, the voltage at R2 both ends is a process slowly established, therefore Q1 also can be with reference to electricity
Delay a period of time can just turn on after pressure is fed, and can be grounded R4 after Q1 conductings, so as to trigger Q2 conductings, set the resistance of R5 and R4
Value makes it reliably trigger Q2 conductings；Due to the presence of C2, the voltage of R5 is also slowly to establish, so that Q2 is slowly turned on, is reached
The purpose of soft start is arrived.
In attached drawing 4, switching tube Q1 is PNP triode, and switching tube Q2 manages for N-channel MOS FET；A termination input electricity of R1
Pressure, a termination R1 of another termination R2, R2, other end ground connection；Input voltage pass through resistance R1, R2 partial pressure, one end of R2 with
Q1 base stages are connected, the other end ground connection, capacitance C1 is in parallel with R1, and the emitter of Q1 is connected with output voltage terminal, Input voltage terminal and
Output voltage terminal is connected；Q1 collectors are connected by resistance R4 with the grid of Q2, the source electrode ground connection of Q2, drain electrode and the output electricity of Q2
The output of pressure it is connected；One end of resistance R5 and ground connection, the other end are connected with the grid of Q2, and capacitance C2 is in parallel with R5；With reference to electricity
Pressure is divided by resistance R1 and R2, generates the level that can trigger Q1 conductings；Due to the presence of C1, the voltage at R1 both ends is
One process slowly established, therefore Q1 can also postpone just turn on for a period of time after reference voltage is fed, meeting after Q1 conductings
R4 is made to be connected with input voltage, so as to trigger Q2 conductings, the resistance value of R5 and R4 is set, it is made reliably to trigger Q2 conductings；Due to C2
Presence, the voltage of R5 is also slowly to establish, so that Q2 is slowly turned on, has achieved the purpose that soft start
The Part III of the topological framework for the multiple-channel output DC/DC Switching Power Supplies that the present invention is given --- rear class voltage stabilizing electricity
Road, main purpose are the output voltages being converted into the unstable constant voltage of prime within stability 1%.Rear class regulator circuit is usual
Linear power supply is selected, if output power is larger, non-isolated Switching Power Supply can also be selected.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, it is impossible to assert
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
On the premise of not departing from present inventive concept, several simple deduction or replace can also be made, should all be considered as belonging to the present invention's
Protection domain.
Claims (8)
1. a kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence, which is characterized in that the multiple-channel output direct current-
DC converter includes prime DC/DC converter topologies circuit, sequential control circuit 2 to n, rear class regulator circuit 2 to n, above-mentioned
Three parts circuit is connected in the form of cascade；The prime DC/DC converter topologies circuit by input voltage be converted into its every
From multiple-channel output preceding step voltage 1 to preceding step voltage n；Wherein preceding step voltage 1 is main output voltage, prime DC/DC converters
Topological circuit samples preceding step voltage 1, and completes closed-loop control, and this road output voltage is established at first；The sequential control
Step voltage 2 is to n before circuit 2 processed connects respectively to n, by making the setting of the sequential control circuit parameter by timing control
Each road output voltage after circuit lags behind preceding 1 regular hour of step voltage respectively；The sequential control circuit is by switching tube
Q1, Q2 and its peripheral circuit are formed；Switching tube Q1 controls triggering and conducting by reference voltage, passes through the first capacitance C1 of parallel connection so that
Q1 is slowly turned on；Q2 conductings are triggered after Q1 conductings, pass through the second capacitance C2 of parallel connection so that Q2 is slowly turned on；Q2 it is fully on it
Afterwards, input voltage is just gradually built up；The rear class regulator circuit 2 connects the sequential control circuit 2 to n to n respectively, will
The relatively low prime voltage stabilization of stability is to predetermined stability, as final output voltage 2 to n；The rear class voltage stabilizing electricity
Road is linear power supply or non-isolated Switching Power Supply.
2. multi-channel output DC-DC inverter according to claim 1, it is characterised in that：The prime DC/DC conversion
Device topological circuit makes choice according to the requirement of the size, the size of output power, volume weight, efficiency of input voltage, uses
Normal shock, flyback or push-pull topology circuit.
3. multi-channel output DC-DC inverter according to claim 1, it is characterised in that：For low-power applications field
It closes the prime DC/DC converter topologies circuit and uses the prime DC/DC converter topology circuits controlled by single PWM.
4. multi-channel output DC-DC inverter according to claim 1, it is characterised in that：Reference voltage is to be connected to
The input voltage external control signal of Q2 front ends or a datum of power source internal.
5. multi-channel output DC-DC inverter according to claim 4, it is characterised in that：Switching tube Q1 is tri- poles of NPN
Pipe, switching tube Q2 manage for P-channel MOSFET；A termination reference voltage of resistance R1, a termination of another terminating resistor R2, R2
R1, other end ground connection；Reference voltage passes through the partial pressure of resistance R1, R2, and one end of R2 is connected with Q1 base stages, other end ground connection, C1
It is in parallel with R2, the emitter ground connection of Q1；The source electrode of Q2 is connected with input voltage, and drain electrode is connected with output voltage, and grid passes through electricity
Resistance R4 is connected with the collector of Q1；One end of resistance R5 is connected with input voltage, and the other end is connected with the grid of Q2, and C2 and R5 is simultaneously
Connection；Reference voltage is divided by resistance R1 and R2, generates the level that can trigger Q1 conductings；Due to the presence of C1, R2 two
The voltage at end is a process slowly established, therefore Q1 can also postpone just turn on for a period of time after reference voltage is fed,
R4 can be grounded after Q1 conductings, so as to trigger Q2 conductings, set the resistance value of R5 and R4, it is made reliably to trigger Q2 conductings；Due to C2
Presence, the voltage of R5 is also slowly to establish, so that Q2 is slowly turned on, has achieved the purpose that soft start.
6. multi-channel output DC-DC inverter according to claim 5, it is characterised in that：In the base of resistance R2 and Q1
Increase diode D1, the cathode of resistance R3, D1 are connected with the base stage of Q1 between pole, and anode is connected with R3；One end of R3 and D1's
Anode is connected, and the other end is connected with R2；Diode D1, resistance R3 are to improve the driving voltage of Q1 switching tubes and electric current, are prevented
Only noise or other interference signals cause Q1 to mislead.
7. multi-channel output DC-DC inverter according to claim 4, it is characterised in that：Switching tube Q1 is tri- poles of PNP
Pipe, switching tube Q2 manage for N-channel MOS FET；A termination input voltage of R1, a termination R1 of another termination R2, R2, the other end
Ground connection；Input voltage passes through the partial pressure of resistance R1, R2, and one end of R2 is connected with Q1 base stages, and other end ground connection, capacitance C1 and R1 is simultaneously
Connection, the emitter of Q1 are connected with output voltage terminal, and Input voltage terminal is connected with output voltage terminal；Q1 collectors by resistance R4 with
The grid of Q2 is connected, and the source electrode ground connection of Q2, the drain electrode of Q2 is connected with the output of output voltage；One end of resistance R5 and ground connection,
The other end is connected with the grid of Q2, and capacitance C2 is in parallel with R5；Reference voltage is divided by resistance R1 and R2, and generation can touch
Send out the level of Q1 conductings；Due to the presence of C1, the voltage at R1 both ends is a process slowly established, therefore Q1 can also referred to
Delay a period of time can just turn on after voltage is fed, and R4 can be made to be connected with input voltage after Q1 conductings, so as to trigger Q2 conductings, if
Determine the resistance value of R5 and R4, it is made reliably to trigger Q2 conductings；Due to the presence of C2, the voltage of R5 is also slowly to establish, so that
Q2 is slowly turned on, and has achieved the purpose that soft start.
8. multi-channel output DC-DC inverter according to claim 7, it is characterised in that：In the base of resistance R2 and Q1
Increase diode D1, the cathode of resistance R3, D1 are connected with R2 between pole, and anode is connected with R3, one end of R3 and the anode phase of D1
Even, the other end is connected with the base stage of Q1；Diode D1, resistance R3 are to improve the driving voltage of Q1 switching tubes and electric current, are prevented
Only noise or other interference signals cause Q1 to mislead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551335.2A CN104362846B (en) | 2014-10-17 | 2014-10-17 | A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410551335.2A CN104362846B (en) | 2014-10-17 | 2014-10-17 | A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104362846A CN104362846A (en) | 2015-02-18 |
| CN104362846B true CN104362846B (en) | 2018-06-01 |
Family
ID=52530082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410551335.2A Active CN104362846B (en) | 2014-10-17 | 2014-10-17 | A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104362846B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896958B (en) * | 2016-04-22 | 2019-06-18 | 天地（常州）自动化股份有限公司 | The power module of mine safety monitoring sensor |
| CN108494236B (en) * | 2018-04-13 | 2024-02-13 | 广州金升阳科技有限公司 | Multi-output time sequence starting circuit |
| CN108599559A (en) * | 2018-06-06 | 2018-09-28 | 青岛海信电器股份有限公司 | Electric power controller and electronic equipment |
| CN109067171A (en) * | 2018-08-28 | 2018-12-21 | 广州金升阳科技有限公司 | Multiple-output electric power |
| CN109525100A (en) * | 2018-11-08 | 2019-03-26 | 深圳航天科技创新研究院 | A kind of power control system of multichannel High voltage output |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100274799B1 (en) * | 1993-04-24 | 2001-02-01 | 윤종용 | Apparatus for controlling power on/off sequence of liquid crystal display(lcd) |
| CN101277066A (en) * | 2008-05-06 | 2008-10-01 | 深圳航天科技创新研究院 | Multipath voltage regulation insulation type digital DC/DC power supply as well as control method |
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN202183022U (en) * | 2011-08-31 | 2012-04-04 | 青岛海信电器股份有限公司 | Forcible reliable circuit and electrical equipment |
| CN103904983A (en) * | 2014-04-10 | 2014-07-02 | 西北工业大学 | Power-on-off timing sequence management circuit of motor drive system for more-electric aircraft |
-
2014
- 2014-10-17 CN CN201410551335.2A patent/CN104362846B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100274799B1 (en) * | 1993-04-24 | 2001-02-01 | 윤종용 | Apparatus for controlling power on/off sequence of liquid crystal display(lcd) |
| CN101277066A (en) * | 2008-05-06 | 2008-10-01 | 深圳航天科技创新研究院 | Multipath voltage regulation insulation type digital DC/DC power supply as well as control method |
| CN101963792A (en) * | 2010-10-29 | 2011-02-02 | 珠海市鑫和电器有限公司 | Time sequence control circuit and control method thereof |
| CN202183022U (en) * | 2011-08-31 | 2012-04-04 | 青岛海信电器股份有限公司 | Forcible reliable circuit and electrical equipment |
| CN103904983A (en) * | 2014-04-10 | 2014-07-02 | 西北工业大学 | Power-on-off timing sequence management circuit of motor drive system for more-electric aircraft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104362846A (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104362846B (en) | A kind of controllable multi-channel output DC-DC inverter of electrifying timing sequence | |
| TWI621328B (en) | Flyback Power Converter Circuit with Active Clamping and Zero Voltage Switching and Control Circuit thereof | |
| CN103825468B (en) | The control circuit of flyback power converter | |
| US9577543B2 (en) | Constant on time (COT) control in isolated converter | |
| US10298136B2 (en) | Flyback converter, control circuit and control method therefor | |
| CN103269163B (en) | Isolated power circuit and control signal transmission circuit thereof and method | |
| CN103269161B (en) | Constant-current output BUCK power circuit | |
| CN103424602B (en) | Based on the secondary winding current testing circuit of source drive | |
| CN106981987B (en) | A kind of DC booster converter and system based on switching capacity inductance | |
| CN104201883A (en) | Control circuit for switching converter | |
| US10270353B2 (en) | Constant on-time (COT) control in isolated converter | |
| US20220255429A1 (en) | Voltage converter | |
| CN109067206B (en) | AC-DC power supply and control circuit of synchronous rectifier tube thereof | |
| CN107104582A (en) | A kind of complementary drive signals generation circuit with transformer isolation | |
| CN109327044B (en) | Power conversion circuit, inverter circuit, photovoltaic power generation system and control method thereof | |
| CN104184319A (en) | Charge pump circuit as well as control circuit and control method thereof | |
| CN115720045A (en) | Voltage-boosting bidirectional direct current-direct current power supply conversion device and control method thereof | |
| US9577542B2 (en) | Constant on-time (COT) control in isolated converter | |
| CN108365743A (en) | A kind of Multi-path synchronous trigger circuit of the negatively charged pressure biasing of Magnetic isolation type | |
| CN206962707U (en) | A kind of dynamic compesated control circuit for synchronous rectification power inverter | |
| CN206472021U (en) | Voltage changer with multiple-channel output | |
| EP3195455A1 (en) | Constant on-time (cot) control in isolated converter | |
| CN110579639B (en) | Mains supply zero-crossing detection circuit and switch power supply system using same | |
| CN208489798U (en) | The synchronous rectifying controller of adaptive adjustment driving voltage and the circuit for using it | |
| CN203911791U (en) | Synchronous rectification drive circuit of active clamping forward converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |