CN109756118A - A kind of double-ended power translation circuit - Google Patents
A kind of double-ended power translation circuit Download PDFInfo
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- CN109756118A CN109756118A CN201711062113.4A CN201711062113A CN109756118A CN 109756118 A CN109756118 A CN 109756118A CN 201711062113 A CN201711062113 A CN 201711062113A CN 109756118 A CN109756118 A CN 109756118A
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- 239000003990 capacitor Substances 0.000 claims description 37
- 230000035939 shock Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 1
Abstract
A kind of double-ended power translation circuit of the present invention, including transformer T, switching tube V1, switching tube V2, diode D1, diode D2, the diode D1, diode D2 reverse parallel connection, the switching tube V1, switching tube V2, the primary side of transformer T and diode D1, diode D2 constitute input unit, the control signal input for stating switching tube V1 is connect by isolated drive circuit with the control signal output for controlling driving circuit, and the control signal input of the switching tube V2 is connect with the control signal output of control driving circuit.The present invention compares pulse transformer driving method, and isolated drive circuit that the present invention uses a driving high position is opened the light pipe, so that the drive waveforms of circuit output is distorted minimum, driving effect is good, reduces circuit debugging difficulty.
Description
Technical field
The present invention relates to a kind of circuit, in particular to a kind of double-ended power translation circuit.
Background technique
Double-ended power translation circuit mainly has double-end normal shock and two kinds of both-end circuit of reversed excitation, and this circuit has structure letter
It is single, control is easy, switch tube voltage stress is lower, energy can feedback input power the advantages that.But, double end converter has a obvious
The shortcomings that be exactly two switching tube not altogether, the driving of high location switch pipe is complex.
Currently, most common high location switch pipe driving method is transformer isolation driving, will be controlled using pulse transformer
After the driving signal isolation that chip issues, to drive high location switch pipe.This driving method is relatively simple, can not have to for a high position
The special high-order power supply of the driving circuit setting of switching tube.But this circuit in practical applications debugging difficulty compared with
Greatly, because driving transformer should transmit signal, there are also the energy needed for coupling driving, since the distribution parameter of transformer is more multiple
Miscellaneous, the drive waveforms after transformer coupled can have distortion, influence to drive effect, in actual operation, circuit debugging has
Bigger difficulty.In addition, the signal processing circuit of driving transformer and transformer front and back ends also compares occupancy volume,
Increase the layout difficulty of circuit.
Summary of the invention
The technical issues of main object of the present invention is to solve in the prior art, it is small to provide a kind of drive waveforms distortion factor
Double-ended power translation circuit.
To achieve the above object, the technical scheme is that
A kind of double-ended power translation circuit, including transformer T, switching tube V1, switching tube V2, diode D1, diode D2,
The diode D1, diode D2 reverse parallel connection, the switching tube V1, switching tube V2, the primary side of transformer T and diode D1,
Diode D2 constitutes input unit, and the control signal input of the switching tube V1 passes through isolated drive circuit and control driving electricity
The control signal output on road connects, and the control signal input of the switching tube V2 and the control signal of control driving circuit are defeated
Outlet connection.
It further, further include diode D4, capacitor C3, the diode D4, capacitor C3 are in parallel with switching tube V1 after connecting,
The isolated drive circuit power input is connected between diode D4, capacitor C3.
Further, further include voltage regulator circuit, the power input of the voltage regulator circuit be connected to diode D4, capacitor C3 it
Between, the power output end of the voltage regulator circuit is connect with the isolated drive circuit power input.
Further, the voltage regulator circuit is linear voltage-stabilizing circuit or switch voltage-stabilizing circuit.
Further, it is in series on the diode D4, capacitor C3 branch road excessively high for preventing on capacitor C3 voltage to fill
Resistance, inductance or capacitor.
Further, the isolated drive circuit is high-speed figure photo-coupler or high-speed figure magnetic coupler.
It further, further include being made of just the secondary side of transformer T, diode D3, diode D5, inductance L1, capacitor C2
Swash output unit.
It further, further include the flyback output unit being made of the secondary side of transformer T, diode D3, capacitor C2.
To sum up content, a kind of double-ended power translation circuit of the present invention compare pulse transformer driving method, this hair
An isolated drive circuit driving high position for bright use is opened the light pipe, so that the drive waveforms of circuit output is distorted minimum, driving effect is good, drop
Low circuit debugging difficulty.Electric branch is taken to provide work for isolated drive circuit by the high position that diode D4, capacitor C3 are formed
Voltage is powered compared to using external power supply, can be significantly reduced costs and volume.
Detailed description of the invention
Fig. 1 is forward converter schematic diagram of the present invention；
Fig. 2 is schematic equivalent circuit during switching tube V2 of the present invention is opened；
Schematic equivalent circuit during Fig. 3 is switching tube V2 shutdown of the present invention；
Fig. 4 be the present invention open the light pipe V1, switching tube V2 shutdown when schematic equivalent circuit；
Fig. 5 is circuit of reversed excitation schematic diagram of the present invention.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one
As shown in Figure 1, in the present embodiment, a kind of double-ended power translation circuit is double-end normal shock circuit, including transformer
T, switching tube V1, switching tube V2, diode D1, diode D2, diode D3, diode D5, inductance L1, capacitor C2.
Wherein, diode D1, diode D2 reverse parallel connection, the switching tube V1, switching tube V2, transformer T primary side and
Diode D1, diode D2 constitute input unit.The control signal input of switching tube V1 passes through isolated drive circuit and control
The control signal output of driving circuit connects, the control signal input of the switching tube V2 and the control of control driving circuit
Signal output end connection.
Driving signal is transmitted to high location switch pipe V1 by isolated drive circuit, and isolated drive circuit is only responsible for transmitting signal
Without coupling energy, pulse transformer driving method is compared, the drive waveforms distortion of circuit output is minimum, drives effect
It is good, reduce circuit debugging difficulty.
Double-ended power translation circuit further include one it is in parallel with switching tube V1 take electric branch, provide work for isolated drive circuit
Make voltage, taking electric branch includes diode D4, capacitor C3, and diode D4, capacitor C3 are in parallel with switching tube V1 after connecting.If defeated
The range for entering voltage VIN is suitable, and the voltage on capacitor C3 is made just to meet the drive level demand of switching tube V1, then uses capacitor C3
On obtained voltage directly power to isolated drive circuit, isolated drive circuit power input is connected to diode D4, capacitor
Between C3.It further include a voltage regulator circuit if the range of input voltage VIN is improper, the power input of voltage regulator circuit connects
It connects between diode D4, capacitor C3, the power output end of voltage regulator circuit is connect with isolated drive circuit power input.
It takes electric branch to provide operating voltage for isolated drive circuit by the high position that diode D4, capacitor C3 are formed, compares
It powers, can significantly reduce costs and volume in using external power supply.
In the present embodiment, voltage regulator circuit is linear voltage-stabilizing circuit or switch voltage-stabilizing circuit, linear voltage-stabilizing circuit structure letter
It is single, it is at low cost, but the low efficiency of circuit, influence the promotion of overall efficiency；Switch voltage-stabilizing circuit is high-efficient, to overall efficiency shadow
Sound is small, but circuit cost is opposite increase.Suitable voltage regulation way can be selected according to the actual requirement of product in.
It can be in series on road for preventing voltage on capacitor C3 from filling excessively high resistance, electricity in diode D4, capacitor C3 branch
Sense or capacitor.
In the present embodiment, isolated drive circuit is high-speed figure photo-coupler or high-speed figure magnetic coupler.
The normal shock output unit that the secondary side of transformer T, diode D3, diode D5, inductance L1, capacitor C2 are formed.
As shown in Figures 2 to 4, after input voltage VIN powers on, control circuit sends out PWM drive signal, lower edge switch pipe V2
Start switch motion, high location switch pipe V1 can not be acted, be held off, therefore because driving voltage is not established also at this time
The temporarily inactive work of double tube positive exciting main circuit.
It is turned off in switching tube V1, during switching tube V2 carries out switch motion, by diode D4, capacitor C3, switching tube V2, two
The primary inductor L p of pole pipe D2 and transformer T forms a BUCK circuit, charges to capacitor C3.
After the voltage of capacitor C3 increases the normal working voltage for reaching voltage regulator circuit, vdd voltage is established, isolated drive circuit
Start work, switching tube V1 also starts switch motion, and double tube positive exciting main circuit starts to operate normally.
During double tube positive exciting normal operation circuit, switching tube V1 and switching tube V2 are open-minded simultaneously, simultaneously turn off.Switching tube
When opening, since switching tube V1 is connected, capacitor C3 cannot charge, and discharge by the energy storage of previous switch periods to voltage regulator circuit；
During switching tube shutdown, the excitation current needs of the primary inductor L p of transformer T, which continue circulation, makes transformer magnetic reset, forces
Diode D1, diode D2 open carry out afterflow, at this point, the resetting current and leakage inductance electric current of the primary inductor L p of transformer T is logical
Diode D2, diode D4 is crossed to charge to C3.In this way, capacitor C3 charges when switching tube turns off, switching tube in each period
Electric discharge when opening, both end voltage reach balance.
Embodiment two
As shown in figure 5, in the present embodiment, a kind of double-ended power translation circuit is both-end circuit of reversed excitation comprising by becoming
The flyback output unit that the secondary side of depressor T, diode D3, capacitor C2 are formed, other are the same as example 1.
As described above, the plan content in conjunction with given by attached drawing, can derive similar technical solution.But it is all not take off
Content from technical solution of the present invention, according to the technical essence of the invention it is to the above embodiments it is any it is simple modification, etc.
With variation and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (8)
1. a kind of double-ended power translation circuit, including transformer T, switching tube V1, switching tube V2, diode D1, diode D2, institute
State diode D1, diode D2 reverse parallel connection, the switching tube V1, switching tube V2, the primary side of transformer T and diode D1, two
Pole pipe D2 constitute input unit, it is characterised in that: the control signal input of the switching tube V1 by isolated drive circuit with
Control the control signal output connection of driving circuit, control signal input and the control driving circuit of the switching tube V2
Control signal output connection.
2. a kind of double-ended power translation circuit according to claim 1, it is characterised in that: further include diode D4, capacitor
In parallel with switching tube V1 after C3, the diode D4, capacitor C3 series connection, the isolated drive circuit power input is connected to two
Between pole pipe D4, capacitor C3.
3. a kind of double-ended power translation circuit according to claim 2, it is characterised in that: it further include voltage regulator circuit, it is described
The power input of voltage regulator circuit is connected between diode D4, capacitor C3, the power output end of the voltage regulator circuit with it is described
The connection of isolated drive circuit power input.
4. a kind of double-ended power translation circuit according to claim 3, it is characterised in that: the voltage regulator circuit is linear steady
Volt circuit or switch voltage-stabilizing circuit.
5. a kind of double-ended power translation circuit according to claim 2, it is characterised in that: in the diode D4, capacitor
C3 branch road is in series with for preventing voltage on capacitor C3 from filling excessively high resistance, inductance or capacitor.
6. a kind of double-ended power translation circuit according to claim 1, it is characterised in that: the isolated drive circuit is height
Speed digital photo-coupler or high-speed figure magnetic coupler.
7. a kind of double-ended power translation circuit according to claim 1, it is characterised in that: further include by the pair of transformer T
The normal shock output unit that side, diode D3, diode D5, inductance L1, capacitor C2 are formed.
8. a kind of double-ended power translation circuit according to claim 1, it is characterised in that: further include by the pair of transformer T
The flyback output unit that side, diode D3, capacitor C2 are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711062113.4A CN109756118A (en) | 2017-11-02 | 2017-11-02 | A kind of double-ended power translation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711062113.4A CN109756118A (en) | 2017-11-02 | 2017-11-02 | A kind of double-ended power translation circuit |
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| Publication Number | Publication Date |
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| CN109756118A true CN109756118A (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711062113.4A Pending CN109756118A (en) | 2017-11-02 | 2017-11-02 | A kind of double-ended power translation circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582640A (en) * | 2009-06-19 | 2009-11-18 | 广州金升阳科技有限公司 | High-efficiency low-electromagnetic interference power converter |
| CN101917121A (en) * | 2010-07-15 | 2010-12-15 | 电子科技大学 | Active clamp synchronous rectification forward converter |
| CN102904453A (en) * | 2012-11-12 | 2013-01-30 | 重庆长安汽车股份有限公司 | Driving power supply for insulated gate bipolar translator (IGBT) |
| CN103929063A (en) * | 2014-04-15 | 2014-07-16 | 矽力杰半导体技术(杭州)有限公司 | Primary-side feedback control method and isolation converter based on primary-side feedback control |
| CN104506073A (en) * | 2015-01-12 | 2015-04-08 | 苏州大学 | Electric spark power source and working method thereof |
| CN207410226U (en) * | 2017-11-02 | 2018-05-25 | 山东朗进科技股份有限公司 | A kind of double-ended power translation circuit |
-
2017
- 2017-11-02 CN CN201711062113.4A patent/CN109756118A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582640A (en) * | 2009-06-19 | 2009-11-18 | 广州金升阳科技有限公司 | High-efficiency low-electromagnetic interference power converter |
| CN101917121A (en) * | 2010-07-15 | 2010-12-15 | 电子科技大学 | Active clamp synchronous rectification forward converter |
| CN102904453A (en) * | 2012-11-12 | 2013-01-30 | 重庆长安汽车股份有限公司 | Driving power supply for insulated gate bipolar translator (IGBT) |
| CN103929063A (en) * | 2014-04-15 | 2014-07-16 | 矽力杰半导体技术(杭州)有限公司 | Primary-side feedback control method and isolation converter based on primary-side feedback control |
| CN104506073A (en) * | 2015-01-12 | 2015-04-08 | 苏州大学 | Electric spark power source and working method thereof |
| CN207410226U (en) * | 2017-11-02 | 2018-05-25 | 山东朗进科技股份有限公司 | A kind of double-ended power translation circuit |
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