CN208209918U - A kind of IGBT/MOS driving circuit of transformer isolation - Google Patents
A kind of IGBT/MOS driving circuit of transformer isolation Download PDFInfo
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- CN208209918U CN208209918U CN201820188797.6U CN201820188797U CN208209918U CN 208209918 U CN208209918 U CN 208209918U CN 201820188797 U CN201820188797 U CN 201820188797U CN 208209918 U CN208209918 U CN 208209918U
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Abstract
The utility model relates to UPS field of circuit technology, the IGBT/MOS driving circuit of especially a kind of transformer isolation, compared with prior art, the IGBT/MOS driving circuit of the transformer isolation is available on UPS to be widely applied, to realize that this principle is uncomplicated first on circuit, it is easy to accomplish；Followed by use unique isolation method, so that driving signal, that is, undistorted, also interference-free, high reliablity, another is exactly that it is not limited on UPS by power, its reliability can be more embodied especially on high-power, therefore the superiority that well embodies it and UPS of the transformer isolation IGBT driving signal technology based on high frequency modulated on UPS embody the place of its value in application field.
Description
Technical field
The present invention relates to UPS field of circuit technology, the IGBT/MOS driving circuit of especially a kind of transformer isolation.
Background technique
On UPS, IGBT drive signal circuit is varied, the driving circuit of useful light-coupled isolation, useful level shift
Formula isolated drive circuit, there are also the driving signals isolated with optical fiber, and these isolation methods all have some disadvantages, such as level
Displacement mode is not isolated really, and isolation voltage is not high, is subject to many limitations in；Although light-coupled isolation has volume
The advantages that small, circuit is simple, at low cost, but its isolation voltage is not high, transmission delay is larger, is easy aging, common mode inhibition energy
Power is poor, commonly used in the isolation of middle low signal；Fiber isolation long transmission distance, strong antijamming capability, isolation voltage is high, reliability
The problems such as high advantage, but its there are power consumptions big, optical attenuation are easy aging, and installation requirement is high, and cost is very big, therefore these are all
Reliable application very well can not be obtained on UPS.
Summary of the invention
For solve the problems, such as defect in the presence of UPS drive signal circuit in the prior art and, the present invention provides a kind of change
The IGBT/MOS driving circuit of depressor isolation.
The present invention is that technical solution used by solving its technical problem is: a kind of transformer isolation of the invention
IGBT/MOS driving circuit is by modulation circuit, pulse isolation transformer and driving signal demodulator circuit and driving shaping circuit institute
Composition；The modulation circuit is matched by the transmission characteristic of two-way complementary modulation signal and isolating transformer；The pulse
Isolating transformer plays the role of the isolation and electrical isolation of driving signal；The driving signal demodulator circuit is to High ireguency SPWM
It is demodulated, reconstructs driving signal；The driving shaping circuit carries out shaping to the driving signal of IGBT, while believing driving
It number amplifies and to directly drive IGBT.
The beneficial effects of the present invention are: compared with prior art, a kind of IGBT/MOS of transformer isolation of the invention drives
Dynamic circuit is available on UPS is widely applied, and to realize that this principle is uncomplicated first on circuit, easy to accomplish；Its
Secondary is with unique isolation method, so that driving signal, that is, undistorted, also without interruption, high reliablity, another is exactly it
It is not limited by power on UPS, its reliability, therefore the change based on high frequency modulated can be more embodied especially on high-power
The superiority that well embodies it and UPS in application field body of the IGBT driving signal technology on UPS is isolated in depressor
The now place of its value.
Detailed description of the invention
With reference to the accompanying drawings and detailed description to a kind of IGBT/MOS driving circuit of transformer isolation of the invention
It is described further.
Fig. 1 is a kind of principle assumption diagram of the IGBT/MOS driving circuit of transformer isolation of the invention；
Fig. 2 is the electrical block diagram of the modulation circuit in Fig. 1；
Fig. 3 is the circuit knot of the pulse isolation transformer and driving signal demodulator circuit and driving shaping circuit in Fig. 1
Structure schematic diagram.
Specific embodiment
As shown in Figure 1 to Figure 3, a kind of IGBT/MOS driving circuit of transformer isolation of the invention is by modulation circuit, arteries and veins
It rushes isolating transformer and driving signal demodulator circuit and driving shaping circuit is formed.
As shown in Figure 1 to Figure 3, modulation circuit: with the transmission characteristic phase of two-way complementary modulation signal and isolating transformer
Match, meets the isolation transmission requirement of IGBT driving signal.
As shown in Figure 1 to Figure 3, pulse isolation transformer: mainly playing the isolation of driving signal, prevents IGBT module different
Chang Shi has no effect the prime of driving, plays the role of electrical isolation, and transmission delay is small, pulse width is abnormal
Become smaller, common mode inhibition capacity is strong.
As shown in Figure 1 to Figure 3, driving signal demodulator circuit: mainly demodulating High ireguency SPWM, reconstruct driving letter
Number, meet the driving signal of IGBT.
As shown in Figure 1 to Figure 3, it drives shaping circuit: shaping being carried out to the driving signal of IGBT, prevents from demodulating the letter come
Number rising edge and failing edge be delayed, and influence the working characteristics of IGBT, while amplifying to driving signal, can be straight
Meet driving IGBT.
It as shown in Figure 1 to Figure 3, is the generation of two pairs of complementary modulation signals of input first, mainly in modulation circuit
HF carrier wave 500KHZ is inputted, after generating 6 tunnel driving signals by the logic circuit of U5, the NAND gate into U4 is combined production
Raw six groups of complementary modulated drive signals solve modulated drive signal after being then sent into pulse isolation transformer T3 isolation
It adjusts, in anode tap reconstruct output IGBT driving signal (8KHZ) of D22, the IGBT driving signal inputted at this time has certain
High frequency ripple signal then amplifies the signal and directly goes to drive for this purpose, shaping need to be carried out to the IGBT driving signal after demodulation
Dynamic IGBT.
In summary it is found that compared with prior art, a kind of IGBT/MOS driving circuit of transformer isolation of the invention
It is available on UPS to be widely applied, to realize that this principle is uncomplicated first on circuit, it is easy to accomplish；Followed by transport
With unique isolation method, so that driving signal, that is, undistorted, also without interruption, high reliablity, another is exactly it in UPS
On do not limited by power, can more embody its reliability especially on high-power, thus based on the transformer of high frequency modulated every
Its is embodied in application field from the superiority that well embodies it of the IGBT driving signal technology on UPS and UPS
Where value.
Embodiment according to the present invention the present invention is described the description of property and not restrictive, it should be appreciated that
In the case where not departing from relevant scope defined by the claims, those skilled in the art can make change and/
Or modification.
Claims (1)
1. a kind of IGBT/MOS driving circuit of transformer isolation, it is characterised in that: by modulation circuit, pulse isolation transformer and
Driving signal demodulator circuit and driving shaping circuit are formed；The modulation circuit by two-way complementary modulation signal be isolated
The transmission characteristic of transformer matches；The pulse isolation transformer plays the isolation of driving signal and the work of electrical isolation
With；The driving signal demodulator circuit demodulates High ireguency SPWM, reconstructs driving signal；The driving shaping circuit pair
The driving signal of IGBT carries out shaping, while amplifying to driving signal and directly driving IGBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820188797.6U CN208209918U (en) | 2018-02-02 | 2018-02-02 | A kind of IGBT/MOS driving circuit of transformer isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820188797.6U CN208209918U (en) | 2018-02-02 | 2018-02-02 | A kind of IGBT/MOS driving circuit of transformer isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208209918U true CN208209918U (en) | 2018-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820188797.6U Active CN208209918U (en) | 2018-02-02 | 2018-02-02 | A kind of IGBT/MOS driving circuit of transformer isolation |
Country Status (1)
| Country | Link |
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| CN (1) | CN208209918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383297A (en) * | 2021-01-15 | 2021-02-19 | 杭州飞仕得科技有限公司 | IGBT driver |
| CN118713656A (en) * | 2024-09-02 | 2024-09-27 | 深圳平创半导体有限公司 | Signal processing circuit based on transformer isolation |
-
2018
- 2018-02-02 CN CN201820188797.6U patent/CN208209918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112383297A (en) * | 2021-01-15 | 2021-02-19 | 杭州飞仕得科技有限公司 | IGBT driver |
| CN118713656A (en) * | 2024-09-02 | 2024-09-27 | 深圳平创半导体有限公司 | Signal processing circuit based on transformer isolation |
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