CN106160427A - Driver for isolating based on pulse generator - Google Patents
Driver for isolating based on pulse generator Download PDFInfo
- Publication number
- CN106160427A CN106160427A CN201610740353.4A CN201610740353A CN106160427A CN 106160427 A CN106160427 A CN 106160427A CN 201610740353 A CN201610740353 A CN 201610740353A CN 106160427 A CN106160427 A CN 106160427A
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- China
- Prior art keywords
- transformator
- side winding
- diode
- circuit
- primary side
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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
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a kind of not to be affected by former limit dutycycle size and novel isolated drive circuit that driving force is strong.The thinking of the present invention is to remove the capacitance in the exciting circuit of former limit, and this electric capacity is only involved in constituting former limit degausser.Former limit exciting circuit is made up of former limit pwm control signal, original edge voltage source, isolating transformer primary side winding, primary side switch pipe；When former limit pwm control signal is high level, drive the conducting of primary side switch pipe, switching tube conducting voltage amplitude is ignored, the voltage at two ends, original edge voltage source is applied directly to isolating transformer primary side winding two ends, by transformer coupled to secondary side rectification circuit, after secondary side rectification circuit rectification, it is output as secondary drives signal, when the isolating transformer former and deputy limit turn ratio is 1, the high level amplitude of this driving signal is equal to the voltage magnitude at two ends, original edge voltage source, unrelated with the dutycycle size of former limit pwm signal.
Description
Technical field
The present invention relates to IC design technical field, be specifically related to driver for isolating based on pulse generator.
Background technology
In the circuit occasion of interleaving inverse excitation parallel circuit application, such as solar photovoltaic grid-connection crisscross parallel flyback is miniature
Inverter, two flyback transformers are the key factors of the restriction further miniaturization of Miniature inverter.If making two transformators
Integrate, it is possible to reduce the overall volume of transformator, improve efficiency and the power density of changer.
Existing conventional isolated drive circuit, different from the power circuit of normal shock topology are, normal shock topology circuit is used
Transmission in power.And the driving that isolated drive circuit only realizes power switch pipe in topology (such as metal-oxide-semiconductor, IGBT etc.) controls,
It is mainly used in exporting control signal to power switch pipe.
Summary of the invention
For above-mentioned prior art, present invention aim at providing driver for isolating based on pulse generator, solve existing
There is technology insulation conversion efficiency low and the technical problem such as power consumption is big.
For reaching above-mentioned purpose, the technical solution used in the present invention is as follows:
Driver for isolating based on pulse generator, for driving the power switch pipe in switch power supply system, its feature
It is: include that primary circuit and secondary side rectification circuit, described primary circuit include PWM controller, the N controlled by PWM controller
Type switching tube Q1, the primary side winding of transformator and electric capacity, described secondary side rectification circuit includes vice-side winding and two poles of transformator
Pipe D2, the Same Name of Ends of the vice-side winding of described transformator is drawn the first outfan as driver for isolating through diode D2, is used
It is connected in the grid with power switch pipe；The different name end of the vice-side winding of described transformator is drawn as the second of driver for isolating
Outfan, for being connected with the source electrode of power switch pipe；
Described transformator, magnetic core on transformator, secondary skeleton, vice-side winding, secondary pin, former limit skeleton, primary side winding,
Magnetic core under former limit pin and transformator；
Described primary side winding is two lines with around, the most corresponding main road with from road；
Described vice-side winding is two lines with around, the most corresponding main road with from road；
Described former limit pin is at least three, one be main road and from road share, another two is main road and makes respectively from road
With, the former limit pin shared is used for detecting potential point；
The connected mode of main road and the coiling from road and pin is contrary, makes the two electric current around on the contrary；
Described driver for isolating, in the exciting circuit of primary side winding and degausser of transformator, electric capacity only operates in
In degausser, it is not involved in excitatory.
In such scheme, described primary circuit, also include resistance R3 and diode D1, wherein, the Same Name of Ends of transformator draws
Go out the input as driver for isolating, for being connected with voltage source；The different name end of transformator passes through N type switch tube Q1 ground connection；
One end of electric capacity is connected with the Same Name of Ends of transformator, and the other end of electric capacity is connected with the negative electrode of diode, the anode of diode with
The different name end of transformator connects；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformator, is only made up of with primary side winding the conduction path of N type switch tube Q1；
The degausser of the primary side winding of transformator, when N type switch tube Q1 turns off, by electric capacity, resistance, diode with former
Limit winding is constituted.
In such scheme, described primary circuit, also include resistance R3 and diode D1, wherein, the Same Name of Ends of transformator draws
Go out the input as driver for isolating, for being connected with voltage source；The different name end of transformator passes through N type switch tube Q1 ground connection；
The anode of diode is connected with the different name end of transformator, and the negative electrode of diode is connected with one end of electric capacity, another termination of electric capacity
Ground；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformator, is only made up of with primary side winding the conduction path of N type switch tube Q1；
The degausser of the primary side winding of transformator, when N type switch tube Q1 turns off, by primary side winding and diode, electricity
Hold, resistance is constituted.
In such scheme, described secondary side rectification circuit, also include accelerating breaking circuit, described acceleration breaking circuit is by resistance
R5, resistance R6, resistance R7, p-type switching tube Q2 form, and wherein, one end of resistance R5 is connected to the anode of diode D2, resistance R5
The other end be connected to p-type switching tube Q2 grid；One end of resistance R6 is connected to the negative electrode of diode D2, and the other end is connected to P
Type switching tube Q2 source electrode, one end of resistance R7 connects p-type switching tube Q2 drain electrode, and the other end is connected to transformator T1 vice-side winding
Ns1 different name end.
In such scheme, described PWM controller model is RT9214, and it also receives control signal, and control signal is by computer
PWRGD signal end on mainboard sends.
Compared with prior art, beneficial effects of the present invention:
On the one hand can reduce the loss of transformator in circuit, reduce the volume of whole circuit, reduce cost, on the other hand energy
Reduce the mismatch between crisscross parallel circuit of reversed excitation, improve efficiency, reduce EMC interference.
Accompanying drawing explanation
Fig. 1 is the circuit theory schematic diagram of the present invention.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
The present invention will be further described below in conjunction with the accompanying drawings:
Embodiment 1
Described secondary side rectification circuit, also include accelerate breaking circuit, described acceleration breaking circuit by resistance R5, resistance R6,
Resistance R7, p-type switching tube Q2 form, and wherein, one end of resistance R5 is connected to the anode of diode D2, and the other end of resistance R5 is even
It is connected to p-type switching tube Q2 grid；One end of resistance R6 is connected to the negative electrode of diode D2, and the other end is connected to p-type switching tube Q2
Source electrode, one end of resistance R7 connects p-type switching tube Q2 drain electrode, and the other end is connected to transformator T1 vice-side winding Ns1 different name end.
Magnetic core on transformator, secondary skeleton, vice-side winding, secondary pin, former limit skeleton, primary side winding, former limit pin and
Magnetic core under transformator.
Wherein, on transformator, under magnetic core and transformator, magnetic core has two annulus, for outer shroud and internal ring, outer shroud and internal ring center
Centered by post.Two grooves are formed, for water jacket and inside groove between outer shroud, internal ring and newel.Secondary skeleton is positioned in water jacket, former limit
Skeleton is positioned in inside groove.
Present invention additionally comprises the power end filter regulator circuit structure being made up of Zener diode D3 and electric capacity C4；Described pair
Side rectification circuit also includes the π type filter circuit construction being made up of inductance L1, electric capacity C1 and electric capacity C3.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Belong to those skilled in the art in the technical scope that the invention discloses, the change that can readily occur in or replacement, all answer
Contain within protection scope of the present invention.
Claims (5)
1. driver for isolating based on pulse generator, for driving the power switch pipe in switch power supply system, including former limit
Circuit and secondary side rectification circuit, described primary circuit includes PWM controller, PWM controller N type switch tube Q1 controlled, change
The primary side winding of depressor and electric capacity, described secondary side rectification circuit includes vice-side winding and the diode D2 of transformator, described transformation
The Same Name of Ends of the vice-side winding of device draws the first outfan as driver for isolating through diode D2, is used for and power switch pipe
Grid connect；The different name end of the vice-side winding of described transformator draws the second outfan as driver for isolating, for
The source electrode of power switch pipe connects, it is characterised in that:
Described transformator, magnetic core, secondary skeleton, vice-side winding, secondary pin, former limit skeleton, primary side winding, former limit on transformator
Magnetic core under pin and transformator；
Described primary side winding is two lines with around, the most corresponding main road with from road；
Described vice-side winding is two lines with around, the most corresponding main road with from road；
Described former limit pin is at least three, and one is main road and shares from road, and another two is main road and uses respectively from road, altogether
Former limit pin be used for detecting potential point；
The connected mode of main road and the coiling from road and pin is contrary, makes the two electric current around on the contrary；
Described driver for isolating, in the exciting circuit of primary side winding and degausser of transformator, electric capacity only operates in degaussing
In circuit, it is not involved in excitatory.
Driver for isolating based on pulse generator the most according to claim 1, it is characterised in that: described primary circuit,
Also including resistance R3 and diode D1, wherein, the Same Name of Ends of transformator draws the input as driver for isolating, is used for and electricity
Potential source connects；The different name end of transformator passes through N type switch tube Q1 ground connection；One end of electric capacity is connected with the Same Name of Ends of transformator, electricity
The other end held is connected with the negative electrode of diode, and the anode of diode is connected with the different name end of transformator；Resistor coupled in parallel is at electric capacity
Two ends；Wherein,
The exciting circuit of the primary side winding of transformator, is only made up of with primary side winding the conduction path of N type switch tube Q1；
The degausser of the primary side winding of transformator, when N type switch tube Q1 turns off, by electric capacity, resistance, diode and former limit around
Group is constituted.
Driver for isolating based on pulse generator the most according to claim 1, it is characterised in that: described primary circuit,
Also including resistance R3 and diode D1, wherein, the Same Name of Ends of transformator draws the input as driver for isolating, is used for and electricity
Potential source connects；The different name end of transformator passes through N type switch tube Q1 ground connection；The anode of diode is connected with the different name end of transformator,
The negative electrode of diode is connected with one end of electric capacity, the other end ground connection of electric capacity；Resistor coupled in parallel is at the two ends of electric capacity；Wherein,
The exciting circuit of the primary side winding of transformator, is only made up of with primary side winding the conduction path of N type switch tube Q1；
The degausser of the primary side winding of transformator, when N type switch tube Q1 turns off, by primary side winding and diode, electric capacity, electricity
Resistance is constituted.
Driver for isolating based on pulse generator the most according to any one of claim 1 to 3, it is characterised in that: institute
Stating secondary side rectification circuit, also include accelerating breaking circuit, described acceleration breaking circuit is by resistance R5, resistance R6, resistance R7, p-type
Switching tube Q2 forms, and wherein, one end of resistance R5 is connected to the anode of diode D2, and the other end of resistance R5 is connected to p-type and opens
Close pipe Q2 grid；One end of resistance R6 is connected to the negative electrode of diode D2, and the other end is connected to p-type switching tube Q2 source electrode, resistance
One end of R7 connects p-type switching tube Q2 drain electrode, and the other end is connected to transformator T1 vice-side winding Ns1 different name end.
Driver for isolating based on pulse generator the most according to claim 1, it is characterised in that: described PWM controller
Model is RT9214, and it also receives control signal, and control signal is sent by the PWRGD signal end on computer main board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740353.4A CN106160427A (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on pulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740353.4A CN106160427A (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on pulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106160427A true CN106160427A (en) | 2016-11-23 |
Family
ID=57342633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610740353.4A Pending CN106160427A (en) | 2016-08-28 | 2016-08-28 | Driver for isolating based on pulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106160427A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019242029A1 (en) * | 2018-06-22 | 2019-12-26 | 华为技术有限公司 | Isolation driver |
| CN112003456A (en) * | 2020-07-14 | 2020-11-27 | 宁波安信数控技术有限公司 | Circuit for driving grid driving transformer |
-
2016
- 2016-08-28 CN CN201610740353.4A patent/CN106160427A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019242029A1 (en) * | 2018-06-22 | 2019-12-26 | 华为技术有限公司 | Isolation driver |
| CN112313862A (en) * | 2018-06-22 | 2021-02-02 | 华为技术有限公司 | Isolation driver |
| CN112313862B (en) * | 2018-06-22 | 2022-04-05 | 华为技术有限公司 | Isolation driver |
| CN112003456A (en) * | 2020-07-14 | 2020-11-27 | 宁波安信数控技术有限公司 | Circuit for driving grid driving transformer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
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| WD01 | Invention patent application deemed withdrawn after publication |