CN207612197U - A kind of driving bleeder circuit of switching tube - Google Patents
A kind of driving bleeder circuit of switching tube Download PDFInfo
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- CN207612197U CN207612197U CN201721770285.2U CN201721770285U CN207612197U CN 207612197 U CN207612197 U CN 207612197U CN 201721770285 U CN201721770285 U CN 201721770285U CN 207612197 U CN207612197 U CN 207612197U
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- switching tube
- driving
- zener diode
- bleeder circuit
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Abstract
The utility model discloses a kind of driving bleeder circuits of switching tube, increase bleeder circuit in the base stage source electrode network of driving switch pipe, the bleeder circuit includes capacitance C1, capacitance C2 and zener diode D1, further include switching tube Q1, switching tube Q2, driving resistance R1 and driving resistance R2, capacitance C1 is the derided capacitors for being connected on switching tube Q1 base stages, zener diode D1 is the diode for being connected on switching tube Q1 base stages, capacitance C2 is the parasitic capacitance of switching tube Q1 base stage source electrodes or the equivalent additional capacitance for being connected in parallel on switching tube Q1 base stage source electrodes.The utility model is divided using the parasitic junction capacitance of driving switch pipe and the capacitance of external series, to form a natural potential-divider network feedback, pass through the capacitance appropriate for adjusting external series, to adjust the base voltage of driving switch pipe so that the base voltage of driving switch pipe is maintained within the scope of reliably working.
Description
Technical field
The utility model is related to a kind of driving bleeder circuits of switching tube.
Background technology
It is used with the gradual batch of silicon carbide switches pipe, the driving of silicon carbide switches pipe also gradually attracts attention.Carbonization
The realization of the turning-on voltage height of silicon switching tube, turning-on voltage narrow range, driving has certain technical difficulty, especially inexpensive
, reliable silicon carbide switches pipe driving method there is prodigious technological value.Currently, the base voltage of driving switch pipe in the industry
Range is 20V, and silicon carbide driving voltage is 20V-25V, thus has exceeded the upper limit value of driving switch pipe base voltage.
Invention content
The technical problem to be solved by the utility model is to provide a kind of driving bleeder circuits of switching tube, are opened using driving
The capacitance of the parasitic junction capacitance and external series of closing pipe is divided, to form a natural potential-divider network feedback, by suitable
When adjusting external series capacitance, to adjust the base voltage of driving switch pipe so that the base voltage of driving switch pipe is protected
It holds within the scope of reliably working.
The utility model is achieved through the following technical solutions：A kind of driving bleeder circuit of switching tube, is driving
Increase bleeder circuit in the base stage of switching tube-source electrode network, the bleeder circuit includes capacitance C1, capacitance C2 and two pole of voltage stabilizing
Pipe D1 further includes switching tube Q1, switching tube Q2, driving resistance R1 and driving resistance R2, and capacitance C1 is to be connected on switching tube Q1
The derided capacitors of base stage, zener diode D1 are the diodes for being connected on switching tube Q1 base stages, and capacitance C2 is switching tube Q1 base stages-
The parasitic capacitance of source electrode or the equivalent additional capacitance for being connected in parallel on switching tube Q1 base stages-source electrode, by adjust capacitance C1,
The capacitance of C2 adjusts the voltage of switching tube Q1 base stages-source electrode, and zener diode D1 is in parallel with capacitance C1, and zener diode D2 is simultaneously
It is associated in base stage-source electrode of driving switch pipe.
The bleeder circuit includes capacitance C1 and zener diode D1 as a preferred technical solution, with switching tube Q1
Base stage-source electrode parasitic capacitance replace capacitance C2.
The bleeder circuit includes capacitance C1, capacitance C2, zener diode D1 and voltage stabilizing as a preferred technical solution,
Diode D3, the zener diode D3 are connected in parallel between base stage-source electrode of switching tube Q1.
The bleeder circuit includes capacitance C1, zener diode D1 and zener diode as a preferred technical solution,
D3。
The utility model has the beneficial effects that：The utility model utilizes the parasitic junction capacitance and external series of driving switch pipe
Capacitance divided, to form a natural potential-divider network feedback, by the capacitance appropriate for adjusting external series, to adjust
Save the base voltage of driving switch pipe so that the base voltage of driving switch pipe is maintained within the scope of reliably working.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the circuit diagram of embodiment 1；
Fig. 2 is the circuit diagram of embodiment 2；
Fig. 3 is the circuit diagram of embodiment 3；
Fig. 4 is the circuit diagram of embodiment 4.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
Embodiment 1
Increase bleeder circuit in base stage-source electrode network of driving switch pipe, the bleeder circuit includes capacitance C1, capacitance
C2 and zener diode D1, which further includes switching tube Q1, switching tube Q2, driving resistance R1 and driving resistance R2, capacitance C1, is
The derided capacitors of switching tube Q1 base stages are connected on, zener diode D1 is the diode for being connected on switching tube Q1 base stages, capacitance C2
It is the parasitic capacitance of switching tube Q1 base stages-source electrode or the equivalent additional capacitance for being connected in parallel on switching tube Q1 base stages-source electrode,
Zener diode D1 is in parallel with capacitance C1, and zener diode D2 is connected in parallel on base stage-source electrode of driving switch pipe.By adjust C1,
The capacitance of C2 adjusts the voltage of Q1 base stages-source electrode.Solve the problems, such as that Q1 base voltages are excessively high with seldom device.
As shown in Fig. 2, bleeder circuit includes capacitance C1 and zener diode D1, posted with base stage-source electrode of switching tube Q1
Raw capacitance replaces capacitance C2.
As shown in figure 3, bleeder circuit includes capacitance C1, capacitance C2, zener diode D1 and zener diode D3, it is described
Zener diode D3 is connected in parallel between base stage-source electrode of switching tube Q1.It may insure when base stage-source electrode parasitic capacitance capacitance is discrete
When larger, the base stage of Q1 switching tubes will not overvoltage.
As shown in figure 4, bleeder circuit includes capacitance C1, zener diode D1 and zener diode D3, capacitance C2 can be with
Remove, replaced with the base stage of Q1 switching tubes-source electrode parasitic capacitance, retains zener diode.
The utility model has the beneficial effects that：The utility model utilizes the parasitic junction capacitance and external series of driving switch pipe
Capacitance divided, to form a natural potential-divider network feedback, by the capacitance appropriate for adjusting external series, to adjust
Save the base voltage of driving switch pipe so that the base voltage of driving switch pipe is maintained within the scope of reliably working.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work should be covered within the scope of the utility model.
Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (4)
1. a kind of driving bleeder circuit of switching tube, it is characterised in that：Increase in base stage-source electrode network of driving switch pipe and divides
Volt circuit, the bleeder circuit include capacitance C1, capacitance C2 and zener diode D1, further include switching tube Q1, switching tube Q2,
Resistance R1 and driving resistance R2 is driven, capacitance C1 is the derided capacitors for being connected on switching tube Q1 base stages, and zener diode D1 is
It is connected on the diode of switching tube Q1 base stages, capacitance C2 is the parasitic capacitance or equivalent additional of switching tube Q1 base stages-source electrode
The capacitance for being connected in parallel on switching tube Q1 base stages-source electrode, the capacitance by adjusting capacitance C1, C2 adjusts switching tube Q1 base stages-source
The voltage of pole, zener diode D1 is in parallel with capacitance C1, and zener diode D2 is connected in parallel on base stage-source electrode of driving switch pipe.
2. the driving bleeder circuit of switching tube as described in claim 1, it is characterised in that：The bleeder circuit includes capacitance C1
And zener diode D1, replace capacitance C2 with the base stage of switching tube Q1-source electrode parasitic capacitance.
3. the driving bleeder circuit of switching tube as described in claim 1, it is characterised in that：The bleeder circuit includes capacitance
C1, capacitance C2, zener diode D1 and zener diode D3, the zener diode D3 are connected in parallel on the base stage-of switching tube Q1
Between source electrode.
4. the driving bleeder circuit of switching tube as claimed in claim 3, it is characterised in that：The bleeder circuit includes capacitance
C1, zener diode D1 and zener diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770285.2U CN207612197U (en) | 2017-12-18 | 2017-12-18 | A kind of driving bleeder circuit of switching tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721770285.2U CN207612197U (en) | 2017-12-18 | 2017-12-18 | A kind of driving bleeder circuit of switching tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612197U true CN207612197U (en) | 2018-07-13 |
Family
ID=62798077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721770285.2U Active CN207612197U (en) | 2017-12-18 | 2017-12-18 | A kind of driving bleeder circuit of switching tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN207612197U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649938A (en) * | 2018-07-27 | 2018-10-12 | 深圳英飞源技术有限公司 | A kind of metal-oxide-semiconductor driving circuit inhibiting negative drive voltage spike |
| CN109239566A (en) * | 2018-09-26 | 2019-01-18 | 北京四方继保自动化股份有限公司 | A kind of method of the presetting driving signal of simulated power type switching tube parasitic capacitance |
-
2017
- 2017-12-18 CN CN201721770285.2U patent/CN207612197U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649938A (en) * | 2018-07-27 | 2018-10-12 | 深圳英飞源技术有限公司 | A kind of metal-oxide-semiconductor driving circuit inhibiting negative drive voltage spike |
| CN109239566A (en) * | 2018-09-26 | 2019-01-18 | 北京四方继保自动化股份有限公司 | A kind of method of the presetting driving signal of simulated power type switching tube parasitic capacitance |
| CN109239566B (en) * | 2018-09-26 | 2021-08-24 | 北京四方继保自动化股份有限公司 | Method for pre-adjusting driving signal by simulating parasitic capacitance of power type switching tube |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 First Floor of No.17 Factory Building of Linya Industrial Park, No.1 Road, Tangtou Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN YINGFEIYUAN TECHNOLOGY CO., LTD. Address before: Room 101, New Energy Innovation Industrial Park, No. 1 Chuangsheng Road, Xili Street, Nanshan District, Shenzhen City, Guangdong Province, 518000 Patentee before: SHENZHEN YINGFEIYUAN TECHNOLOGY CO., LTD. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518000 First Floor of No.1 Factory Building of Linya Industrial Park, No.1 Road, Tangtou Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN INFY POWER Co.,Ltd. Address before: 518000 First Floor of No.17 Factory Building of Linya Industrial Park, No.1 Road, Tangtou Community, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN INFY POWER Co.,Ltd. |