CN106602883A - Power MOS pipe switch power supply integration power supply circuit without auxiliary winding - Google Patents
Power MOS pipe switch power supply integration power supply circuit without auxiliary winding Download PDFInfo
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- CN106602883A CN106602883A CN201710140051.8A CN201710140051A CN106602883A CN 106602883 A CN106602883 A CN 106602883A CN 201710140051 A CN201710140051 A CN 201710140051A CN 106602883 A CN106602883 A CN 106602883A
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- power supply
- mos
- vcc
- transformator
- charging interval
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
Abstract
The invention relates to a power MOS pipe switch power supply integration power supply circuit without an auxiliary winding. The circuit comprises a high voltage rectification filter circuit module, a transformer and an integrated circuit module. An output terminal of the high voltage rectification filter circuit module is connected to a synonym terminal of a primary winding of the transformer. The integrated circuit module is connected to a dotted terminal of the primary winding of the transformer. By using the power MOS pipe switch power supply integration power supply circuit without the auxiliary winding, one winding of the transformer is omitted, a peripheral circuit is greatly simplified, production cost is reduced and a wide application scope is possessed.
Description
Technical field
The present invention relates to technical field of integrated circuits, more particularly to integrated circuit field of circuit technology, specifically refer to
A kind of integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding.
Background technology
Traditional isolation type switching power supply transformator includes three groups of windings, is respectively primary side winding, the supply of storage energy
The vice-side winding of load and the assists winding of supplying intergrated circuit with electricity, are illustrated in figure 1 traditional assists winding mode and realize collection
Into the isolation type switching power supply circuit structure that circuit is powered.
Traditional assists winding mode shown in Fig. 1 realizes that the operation principle of integrated circuit is：AC alternating current Jing high pressure
Rectification filtering module is converted into high-voltage dc signal VBUCK, and VBUCK is added on RST, is given by it before integrated circuit starts
CVCC charges, and after VCC voltages reach integrated circuit startup voltage, integrated circuit is started working, and M0 is normally turned on and off,
As energy traffic load both end voltage gradually builds up, at the same time transformator assists winding L3 induces voltage and by DVCC
Charge with providing integrated circuit operation institute subfam. Spiraeoideae to CVCC.The peripheral circuit of assists winding electric power-feeding structure is complicated, production cost
It is higher.
The content of the invention
The purpose of the present invention is the shortcoming for overcoming above-mentioned prior art, there is provided one kind can be realized simplifying periphery electricity
Road, lowers the integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding of production cost.
To achieve these goals, the present invention has following composition：
The integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding, it is characterised in that described circuit includes
High-voltage rectifying filter circuit module, transformator and integrated circuit modules, the outfan of described high-voltage rectifying filter circuit module
It is connected with the different name end of the primary side winding of described transformator, the former limit of described integrated circuit modules and described transformator
The Same Name of Ends of winding is connected.
It is preferred that described high-voltage rectifying filter circuit module includes high-voltage rectifying filter circuit and alternating current power supply, it is described
The outfan of alternating current power supply be connected with the input of described high-voltage rectifying filter circuit.
It is preferred that described transformator is isolated transformator, described isolated transformator also includes secondary rectification two
Pole pipe, the positive pole of described secondary commutation diode is connected with the Same Name of Ends of the vice-side winding of described isolated transformator,
The negative pole of described secondary commutation diode is connected with output loading.
It is preferred that described integrated circuit modules include charging interval controller, three-state driver, pulse width modulator, MOS
Power tube, parasitic capacitance, VCC commutation diodes and MOS auxiliary switches, described circuit also includes energy storage filter capacitor and original
Side current sampling resistor, the first end of described charging interval controller respectively with the negative pole of described VCC commutation diodes and
The first end of described energy storage filter capacitor is connected, the second end of described charging interval controller and described pulsewidth modulation
The first end of device is connected, and the 3rd end of described charging interval controller is connected with the first end of described three-state driver
Connect, the second end of described three-state driver is respectively with the first of the grid of described MOS power tubes and described parasitic capacitance
End is connected, and the drain electrode of described MOS power tubes is connected with the Same Name of Ends of the primary side winding of described transformator, described
The source electrode of MOS power tubes respectively with the second end of described parasitic capacitance, the positive pole of described VCC commutation diodes and described
The drain electrode of MOS auxiliary switches is connected, the second end of described pulse width modulator and the grid of described MOS auxiliary switches
It is connected, the source electrode of described MOS auxiliary switches is connected with the first end of described primary current sampling resistor, described
The second end ground connection of primary current sampling resistor, the second end of described energy storage filter capacitor is grounded.
It is preferred that described integrated circuit modules include charging interval controller, driver, pulse width modulator, MOS power
Pipe, the first diode, bootstrap capacitor, VCC commutation diodes and MOS auxiliary switches, described circuit is also filtered including energy storage
Electric capacity and primary current sampling resistor, the first end of described charging interval controller respectively with described VCC commutation diodes
Negative pole, the first end of described energy storage filter capacitor be connected with the positive pole of the first described diode, during described charging
Between the second end of controller be connected with the first end of described pulse width modulator, the 3rd end of described charging interval controller
It is connected with the first end of described driver, the 3rd end of described driver is connected with the grid of described MOS power tubes
Connect, the drain electrode of described MOS power tubes is connected with the Same Name of Ends of the primary side winding of described transformator, described MOS power
The source electrode of pipe the 4th end, the second end of described bootstrap capacitor, described VCC commutation diodes respectively with described driver
Positive pole be connected with the drain electrode of described MOS auxiliary switches, the second end of described bootstrap capacitor respectively with described drive
Second end of dynamic device is connected with the negative pole of the first described diode, the second end of described pulse width modulator with it is described
The grid of MOS auxiliary switches is connected, the source electrode and described primary current sampling resistor of described MOS auxiliary switches
First end is connected, and the second end of described primary current sampling resistor is grounded, and the second of described energy storage filter capacitor terminates
Ground.
The integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding in the invention are employed, transformation is eliminated
The winding all the way of device, enormously simplify peripheral circuit, reduce production cost, be with a wide range of applications.
Description of the drawings
Fig. 1 realizes that the circuit structure of the integrated power supply circuits of isolation type switching power supply shows for the assists winding mode of prior art
It is intended to.
Fig. 2 is that the circuit structure of the integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding of the present invention is illustrated
Figure.
Fig. 3 is another kind of embodiment party of the integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding of the present invention
The electrical block diagram of formula.
Fig. 4 is showing for the control waveform of the integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding of the present invention
It is intended to.
Specific embodiment
In order to more clearly describe the technology contents of the present invention, carry out with reference to specific embodiment further
Description.
The integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding, it is characterised in that described circuit includes
High-voltage rectifying filter circuit module, transformator and integrated circuit modules, the outfan of described high-voltage rectifying filter circuit module
It is connected with the different name end of the primary side winding of described transformator, the former limit of described integrated circuit modules and described transformator
The Same Name of Ends of winding is connected.
In a kind of preferably embodiment, described high-voltage rectifying filter circuit module includes high-voltage rectifying filter circuit
And alternating current power supply, the outfan of described alternating current power supply is connected with the input of described high-voltage rectifying filter circuit.
In a kind of preferably embodiment, described transformator is isolated transformator, described isolated transformator
Also include secondary commutation diode, the positive pole of described secondary commutation diode and the vice-side winding of described isolated transformator
Same Name of Ends be connected, the negative pole of described secondary commutation diode is connected with output loading.
In a kind of preferably embodiment, described integrated circuit modules include charging interval controller, tri-state driver
Device, pulse width modulator, MOS power tubes, parasitic capacitance, VCC commutation diodes and MOS auxiliary switches, described circuit is also wrapped
Include energy storage filter capacitor and primary current sampling resistor, the first end of described charging interval controller respectively with described VCC
The negative pole of commutation diode is connected with the first end of described energy storage filter capacitor, and the second of described charging interval controller
End is connected with the first end of described pulse width modulator, and the 3rd end of described charging interval controller is driven with described tri-state
The first end of dynamic device is connected, the second end of described three-state driver respectively with the grid of described MOS power tubes and described
The first end of parasitic capacitance be connected, the drain electrode of described MOS power tubes is of the same name with the primary side winding of described transformator
End is connected, the source electrode of described MOS power tubes respectively with the second end of described parasitic capacitance, the described pole of VCC rectifications two
The positive pole of pipe is connected with the drain electrode of described MOS auxiliary switches, the second end of described pulse width modulator and described MOS
The grid of auxiliary switch is connected, the source electrode and the of described primary current sampling resistor of described MOS auxiliary switches
One end is connected, and the second end of described primary current sampling resistor is grounded, and the second end of described energy storage filter capacitor is grounded.
In a kind of preferably embodiment, described integrated circuit modules include charging interval controller, driver, arteries and veins
Wide manipulator, MOS power tubes, the first diode, bootstrap capacitor, VCC commutation diodes and MOS auxiliary switches, described electricity
Road also includes energy storage filter capacitor and primary current sampling resistor, the first end of described charging interval controller respectively with it is described
The negative pole of VCC commutation diodes, the first end of described energy storage filter capacitor is connected with the positive pole of the first described diode
Connect, the second end of described charging interval controller is connected with the first end of described pulse width modulator, during described charging
Between the 3rd end of controller be connected with the first end of described driver, the 3rd end of described driver and described MOS
The grid of power tube is connected, and the drain electrode of described MOS power tubes is connected with the Same Name of Ends of the primary side winding of described transformator
Connect, the source electrode of described MOS power tubes the 4th end, the second end of described bootstrap capacitor, institute respectively with described driver
The positive pole of the VCC commutation diodes stated is connected with the drain electrode of described MOS auxiliary switches, and the second of described bootstrap capacitor
End is connected respectively with the negative pole at the second end of described driver and the first described diode, described pulse width modulator
Second end is connected with the grid of described MOS auxiliary switches, the source electrode and described former limit of described MOS auxiliary switches
The first end of current sampling resistor is connected, and the second end of described primary current sampling resistor is grounded, described energy storage filtering
The second end ground connection of electric capacity.
In a kind of specific embodiment, as shown in Fig. 2 the mark and its effect of wherein each device or module are as follows：
AC：Alternating current power supply；
High-voltage rectifying filtration module：Alternating current power supply is rectified into into DC high-voltage；
VBUCK：High-voltage rectifying exports direct current of voltage regulation；
L1：Transformer primary side winding, for giving transformator energy storage；
L2：Transformer secondary winding, for the energy of transmission transformer former limit storage；
DOUT：Secondary commutation diode；
Output loading：By power supply unit or test equipment.
VCC：Chip internal power supply；
CS：Voltage on primary current sampling resistor；
Ip：Primary side winding electric current；
M0：MOS type high-voltage switch gear power tube；
Cgs：Parasitic capacitance of the MOS type high-voltage switch gear power tube grid to source electrode；
VGATE：MOS type high-voltage switch gear power tube grid voltage；
M1：MOS auxiliary switches；
DVCC：VCC commutation diodes；
CVCC：Integrated circuit power supply, the energy storage filter capacitor of VCC；
RCS：Primary current sampling resistor, by primary current voltage CS is converted into；
Output loading：By power supply unit or test equipment；
VCC power-on time controllers：The control CVCC charging delay times；
Pulse width modulator：Produce pulse-width signal；
Three-state driver：Drive signal is produced, there is three kinds of states, low level state, high level state, high impedance status.
In one embodiment, the circuit structure includes high-voltage rectifying filter circuit module, isolated transformator and integrated
Circuit module.The high-voltage rectifying filter circuit module includes exchange electrical input and DC output end, and the alternating current is defeated
Enter end connection alternating current power supply.
The DC output end connection transformer primary side winding different name end, Same Name of Ends connection MOS type high-voltage switch gear power
Pipe, the Same Name of Ends of the transformer secondary winding connects output loading by output commutation diode DOUT.
The integrated circuit modules include MOS type high-voltage switch gear power tube M0, auxiliary switch M1, VCC commutation diode
DVCC, pulse width modulator, VCC charging interval controllers.Wherein, the grid connection tri-state of MOS type high-voltage switch gear power tube M0 is driven
Dynamic device, the source electrode of M0 connects the anode of the VCC commutation diodes DVCC, the negative electrode connection energy storage filter capacitor CVCC's of DVCC
One end, the other end ground connection of CVCC, the source electrode of M0 is also connected with the drain electrode of the auxiliary switch M1, and the grid connection pulsewidth of M1 is adjusted
Device processed, its source electrode connection sampling resistor RCS, the other end ground connection of RCS.
The input connection pulse width modulator of VCC power-on time actuators, another input connection VCC, its outfan
Connection three-state driver.
The operation principle of the embodiment is：Refering to Fig. 4, during normal work, pulse width modulator control M0 and M1 is synchronously opened,
DRN ends are about 0 potential point.VCS voltage linear rise, when CS voltages reach internal preset value, pulse width modulator control M1 pipes
Shut-off, simultaneity factor calculates the required VCC charging intervals according to VCC voltages, simultaneously switches off M0 grid voltages, now the grid of M0
Extremely high impedance status.Because M0 grids have parasitic capacitance Cgs, DRN ends will be by bootstrapping to about VCC voltages, so the grid of M0
Pole tension is booted to about VCC+VGATE, therefore M0 pipes will continue to conducting state.The now charging to CVCC starts, VCS
Voltage may proceed to linear rise.
VCC voltage signals are sampled inside VCC power-on time actuators, needed for calculating after inter-process
In the VCC charging intervals, after terminating in this charging interval, VCC time controllers control three-state driver is outwards extracted from the grid of M0
Pulse current, rapidly switches off M0, reaches and is delayed to turn off purpose, and the power supply of integrated circuit in current period terminates.Vice-side winding
Afterflow starts.
In another kind of specific embodiment, as shown in figure 3, the mark and its effect of wherein each device or module are such as
Under：
AC：Alternating current power supply；
High-voltage rectifying filtration module：Alternating current power supply is rectified into into DC high-voltage；
VBUCK：High-voltage rectifying exports direct current of voltage regulation；
L1：Transformer primary side winding, for giving transformator energy storage；
L2：Transformer secondary winding, for the energy of transmission transformer former limit storage；
DOUT：Secondary commutation diode；
Output loading：By power supply unit or test equipment.
VCC：Chip internal power supply；
VBST：Internal bootstrap power supply；
CBST：Bootstrap capacitor；
CS：Voltage on primary current sampling resistor；
Ip：Primary side winding electric current；
M0：MOS type high-voltage switch gear power tube；
M1：MOS auxiliary switches；
DVCC：VCC commutation diodes；
CVCC：Integrated circuit power supply, the energy storage filter capacitor of VCC；
RCS：Primary current sampling resistor, by primary current voltage CS is converted into；
Output loading：By power supply unit or test equipment；
VCC power-on time controllers：The control CVCC charging delay times；
Pulse width modulator：Produce pulse-width signal；
In one embodiment, the circuit structure includes high-voltage rectifying filter circuit module, isolated transformator and integrated
Circuit module.The high-voltage rectifying filter circuit module includes exchange electrical input and DC output end, and the alternating current is defeated
Enter end connection alternating current power supply.
The DC output end connection transformer primary side winding different name end, Same Name of Ends connection MOS type high-voltage switch gear power
Pipe, the Same Name of Ends of the transformer secondary winding connects output loading by output commutation diode DOUT.
The integrated circuit modules include MOS type high-voltage switch gear power tube M0, auxiliary switch M1, VCC commutation diode
DVCC, pulse width modulator, VCC charging interval controllers, driver.
Wherein, the grid connection driver of MOS type high-voltage switch gear power tube M0, the source electrode of M0 connects the VCC rectifications two
The anode of pole pipe DVCC, the negative electrode of DVCC connects one end of energy storage filter capacitor CVCC, the other end ground connection of CVCC, the source electrode of M0
It is also connected with the drain electrode of the auxiliary switch M1, the source electrode connection sampling resistor RCS of M1, the other end ground connection of RCS.
The ground terminal of VCC power-on time actuators is connected to the source electrode of M0.Input connects pulse width modulator, another input
End connection VCC, its outfan connection driver, the ground terminal of the driver connects the source electrode of M0.Outfan connects the grid of M0.
The outfan of the pulse width modulator connects the grid of auxiliary switch M1, while connect the VCC charging intervals controlling
Device.Capacitor C one end is connected to the source electrode of M0, other end connection VCC
The operation principle of the embodiment is：Refering to Fig. 4, during normal work, pulse width modulator control M0 and M1 is synchronously opened.
DRN ends are about 0 potential point, and VBST voltages are approximately equal to VCC, VCS voltage linear rise, when CS voltages reach internal preset value,
Pulse width modulator control M1 pipe shut-offs, M0 continues to keep it turned on, and because the voltage on electric capacity C is about VCC, DRN ends will be booted
To VCC, then VBST is about 2 times of VCC, therefore the grid voltage of M0 is about VGATE+VCC, and the now charging to CVCC starts.
VCS voltage may proceed to linear rise.
VCC voltage signals are sampled inside VCC power-on time actuators, required VCC is calculated after treatment
In the charging interval, after terminating in this charging interval, VCC time controllers control driver and outwards extract pulse electricity from the grid of M0
Stream, rapidly switches off M0, and the power supply of integrated circuit in current period terminates.Vice-side winding afterflow starts.
In the technical scheme of the integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding of the present invention, wherein institute
Including each function device and modular device can correspond to actual particular hardware circuit structure, therefore these modules and
Unit is merely with hardware circuit it is achieved that need not aid in being automatically obtained accordingly with specific control software
Function.
In employing the invention, the integrated confession of power MOS pipe Switching Power Supply without assists winding in the invention is employed
Circuit, eliminates the winding all the way of transformator, enormously simplify peripheral circuit, reduces production cost, answers with extensive
Use scope.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that still can make
Various modifications and alterations are without departing from the spirit and scope of the present invention.Therefore, specification and drawings are considered as illustrative
And it is nonrestrictive.
Claims (5)
1. a kind of integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding, it is characterised in that described circuit includes
High-voltage rectifying filter circuit module, transformator and integrated circuit modules, the outfan of described high-voltage rectifying filter circuit module
It is connected with the different name end of the primary side winding of described transformator, the former limit of described integrated circuit modules and described transformator
The Same Name of Ends of winding is connected.
2. integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding according to claim 1, its feature exists
Include high-voltage rectifying filter circuit and alternating current power supply in, described high-voltage rectifying filter circuit module, described alternating current power supply
Outfan is connected with the input of described high-voltage rectifying filter circuit.
3. integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding according to claim 1, its feature exists
In described transformator is isolated transformator, and described isolated transformator also includes secondary commutation diode, described pair
The positive pole of side commutation diode is connected with the Same Name of Ends of the vice-side winding of described isolated transformator, described secondary rectification
The negative pole of diode is connected with output loading.
4. integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding according to claim 1, its feature exists
In described integrated circuit modules include charging interval controller, three-state driver, pulse width modulator, MOS power tubes, parasitism
Electric capacity, VCC commutation diodes and MOS auxiliary switches, described circuit also includes that energy storage filter capacitor and primary current are sampled
Resistance, the first end of described charging interval controller negative pole respectively with described VCC commutation diodes and described energy storage
The first end of filter capacitor is connected, the second end of described charging interval controller and the first end of described pulse width modulator
It is connected, the 3rd end of described charging interval controller is connected with the first end of described three-state driver, described three
Second end of state driver is connected respectively with the grid of described MOS power tubes and the first end of described parasitic capacitance, institute
The drain electrode of the MOS power tubes stated is connected with the Same Name of Ends of the primary side winding of described transformator, the source of described MOS power tubes
Pole respectively with the second end of described parasitic capacitance, the positive pole of described VCC commutation diodes and described MOS auxiliary switches
Drain electrode be connected, the second end of described pulse width modulator is connected with the grid of described MOS auxiliary switches, described
The source electrode of MOS auxiliary switches is connected with the first end of described primary current sampling resistor, described primary current sampling
The second end ground connection of resistance, the second end of described energy storage filter capacitor is grounded.
5. integrated power supply circuits of power MOS pipe Switching Power Supply without assists winding according to claim 1, its feature exists
In described integrated circuit modules include charging interval controller, driver, pulse width modulator, MOS power tubes, the one or two pole
Pipe, bootstrap capacitor, VCC commutation diodes and MOS auxiliary switches, described circuit also includes energy storage filter capacitor and former limit electricity
Stream sampling resistor, it is the first end of described charging interval controller negative pole respectively with described VCC commutation diodes, described
The first end of energy storage filter capacitor is connected with the positive pole of the first described diode, and the second of described charging interval controller
End is connected with the first end of described pulse width modulator, the 3rd end of described charging interval controller and described driver
First end be connected, the 3rd end of described driver is connected with the grid of described MOS power tubes, described MOS work(
The drain electrode of rate pipe is connected with the Same Name of Ends of the primary side winding of described transformator, the source electrode of described MOS power tubes respectively with
4th end of described driver, the second end of described bootstrap capacitor, the positive pole of described VCC commutation diodes and described
The drain electrode of MOS auxiliary switches is connected, the second end of described bootstrap capacitor respectively with the second end of described driver and
The negative pole of the first described diode is connected, the second end of described pulse width modulator and described MOS auxiliary switches
Grid is connected, and the source electrode of described MOS auxiliary switches is connected with the first end of described primary current sampling resistor, institute
The second end ground connection of the primary current sampling resistor stated, the second end of described energy storage filter capacitor is grounded.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140051.8A CN106602883B (en) | 2017-03-10 | 2017-03-10 | The power MOS pipe Switching Power Supply of no auxiliary winding integrates power supply circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710140051.8A CN106602883B (en) | 2017-03-10 | 2017-03-10 | The power MOS pipe Switching Power Supply of no auxiliary winding integrates power supply circuit |
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| CN106602883A true CN106602883A (en) | 2017-04-26 |
| CN106602883B CN106602883B (en) | 2019-03-15 |
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| CN114710038A (en) * | 2022-05-30 | 2022-07-05 | 七四九(南京)电子研究院有限公司 | Power supply circuit applied to module power source primary side bootstrap drive |
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| CN107733255A (en) * | 2017-10-20 | 2018-02-23 | 福建省福芯电子科技有限公司 | A kind of double winding power circuit |
| CN114710038A (en) * | 2022-05-30 | 2022-07-05 | 七四九(南京)电子研究院有限公司 | Power supply circuit applied to module power source primary side bootstrap drive |
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| CN106602883B (en) | 2019-03-15 |
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