CN204967620U - Be used for IGBT driven power supply circuit - Google Patents
Be used for IGBT driven power supply circuit Download PDFInfo
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- CN204967620U CN204967620U CN201520590317.5U CN201520590317U CN204967620U CN 204967620 U CN204967620 U CN 204967620U CN 201520590317 U CN201520590317 U CN 201520590317U CN 204967620 U CN204967620 U CN 204967620U
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Abstract
(B, ) the utility model relates to a power electronics field specifically is used for (b) (b) IGBT (b) (b) driven power supply circuit for one kind, including the transformer, the primary side winding of transformer is connected with high frequency signal generating circuit, the vice limit of transformer has a vice limit winding of two upper and lower ranges, and every vice limit winding all is connected with power amplification output circuit, high frequency signal generating circuit is including having high frequency square signal output circuit that a plurality of schmidt trigger constitute and recommending amplifier circuit with high frequency square signal output circuit is formed by connecting, (b) (b) operation safety and stability, with low costs, simple structure and make the power performance better recommend on amplifier circuit is connected to the primary side winding of transformer. (B, )
Description
Technical field
the utility model relates to electric and electronic technical field, is specially a kind of power circuit driven for IGBT.
Background technology
in super high power translation circuit, IGBT is often used by power device, but IGBT has the existence of tail currents when turning off, and accelerates to turn off with regard to needing to apply a negative pressure to the drive circuit of IGBT.Therefore IGBT needs positive-negative power supply, and the power of power conversion circuit is larger, the ampacity of the IGBT needed is larger, the driving-energy so needed is also larger, therefore IGBT needs to adopt the accessory power supply independently possessing positive and negative power supply to power, and common accessory power supply price general charged is expensive, and peripheral circuit is complicated.
Utility model content
an object of the present utility model is to provide that a kind of security of operation is stablized, cost is low, structure is simple and the power circuit driven for IGBT making power source performance more excellent.
above-mentioned technical purpose of the present utility model is achieved by the following technical programs: a kind of power circuit driven for IGBT, comprise transformer, the former limit winding switching of described transformer has high-frequency signal circuit for generating, the secondary of described transformer has two vice-side winding be arranged above and below, each vice-side winding is all connected with power amplification output circuit, described high-frequency signal circuit for generating comprises the high-frequency square-wave signal output circuit with multiple Schmidt trigger composition and the push-pull amplifier circuit be formed by connecting with high-frequency square-wave signal output circuit, described push-pull amplifier circuit is connected on the former limit winding of transformer.
in technique scheme, this circuit structure is more stable, reliable, cost is low, structure is simple, take up room little, the performance of power supply is more excellent, utilize high-frequency square-wave signal output circuit to obtain high-frequency square-wave signal, then carry out signal amplification by push-pull amplifier circuit, the effect finally by power amplification output circuit obtains required DC power supply.
as to preferably of the present utility model, push-pull amplifier circuit comprises the first triode, second triode, 3rd triode and the 4th triode, the emitter of described first triode is connected with the emitter of the second triode and is connected to wherein one end of former limit winding, the grounded collector of the second triode, the emitter of described 3rd triode is connected with the emitter of the 4th triode and is connected to the wherein other end of former limit winding by serial connection one capacitance, the grounded collector of the 4th triode, the base stage of the first triode and the base stage short circuit of the second triode are also connected to two inputs of one the 4th Schmidt trigger simultaneously by serial connection one first input resistance, the base stage of the 3rd triode and the base stage short circuit of the 4th triode are also connected to the output of the 4th Schmidt trigger by serial connection one second input resistance.
as to preferably of the present utility model, high-frequency square-wave signal output circuit comprises the first Schmidt trigger, second Schmidt trigger and the 3rd Schmidt trigger, two inputs of the 4th Schmidt trigger are connected to the output of the 3rd Schmidt trigger simultaneously, two inputs of the 3rd Schmidt trigger are connected to the output of the second Schmidt trigger simultaneously and are connected to two inputs of the second Schmidt trigger by the second input capacitance of being connected in series successively and the 3rd input resistance simultaneously, the serial connection place of the second input capacitance and the 3rd input resistance is also connected to two inputs of the first Schmidt trigger simultaneously by the 4th input resistance, two inputs of the second Schmidt trigger are also connected to the output of the first Schmidt trigger simultaneously, the operating voltage end of the first Schmidt trigger is connected to supply power voltage VCC, supply power voltage VCC is by ground connection after serial connection one first input capacitance.The public connecting end ground connection of the first Schmidt trigger.
as to preferably of the present utility model, the first triode and the 3rd triode are NPN type pipe, and the second triode and the 4th triode are positive-negative-positive pipe.
as to preferably of the present utility model, power amplification output circuit comprises the first output capacitance, vice-side winding wherein one end is connected to negative supply output, and the vice-side winding wherein other end is connected to positive supply output by the first output capacitance of being connected in series successively and the first output diode and is connected to negative supply output by the first output capacitance of being connected in series successively and the second output diode simultaneously.
as to preferably of the present utility model, between positive supply output and negative supply output, be connected with two output electrochemical capacitors of mutually connecting.
as to preferably of the present utility model, between positive supply output and negative supply output, be connected with two output auxiliary capacitors of mutually connecting.
as to preferably of the present utility model, between positive supply output and negative supply output, be connected with the first output resistance and the voltage stabilizing didoe of series connection mutually.
as to preferably of the present utility model, two mutually the output electrochemical capacitors of series connection series connection place, two series connection place of output auxiliary capacitor of series connection and series connection place of the first output resistance and voltage stabilizing didoe are all connected to common port COM place mutually.Common port COM ground connection, reaches better effect.
as to preferably of the present utility model, between positive supply output and common port COM, be also connected with the second output resistance.
the beneficial effects of the utility model: this circuit structure is more stable, reliable, cost is low, structure is simple, take up room little, the performance of power supply is more excellent, high-frequency square-wave signal output circuit is utilized to obtain high-frequency square-wave signal, then carry out signal amplification by push-pull amplifier circuit, the effect finally by power amplification output circuit obtains the DC power supply of required high-quality.
Accompanying drawing explanation
fig. 1 is the structural representation of the utility model embodiment.
in figure: 1, transformer, 11, first triode, 12, second triode, 13, 3rd triode, 14, 4th triode, 2, capacitance, 21, first input resistance, 22, second input resistance, 31, first Schmidt trigger, 32, second Schmidt trigger, 33, 3rd Schmidt trigger, 34, 4th Schmidt trigger, 42, second input capacitance, 23, 3rd input resistance, 24, 4th input resistance, 41, first input capacitance, 51, first output capacitance, 71, positive supply output, 72, negative supply output, 61, first output diode, 62, second output diode, 81, export electrochemical capacitor, 82, export auxiliary capacitor, 83, first output resistance, 84, voltage stabilizing didoe, 85, second output resistance.
Embodiment
following specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make to the present embodiment the amendment not having creative contribution as required after reading this specification, as long as but be all subject to the protection of Patent Law in right of the present utility model.
embodiment, as shown in Figure 1, a kind of power circuit driven for IGBT, comprise transformer 1, the former limit winding switching of described transformer 1 has high-frequency signal circuit for generating, the secondary of described transformer 1 has two vice-side winding be arranged above and below, each vice-side winding is all connected with power amplification output circuit, described high-frequency signal circuit for generating comprises the high-frequency square-wave signal output circuit with multiple Schmidt trigger composition and the push-pull amplifier circuit be formed by connecting with high-frequency square-wave signal output circuit, and described push-pull amplifier circuit is connected on the former limit winding of transformer 1.
push-pull amplifier circuit comprises the first triode 11, second triode 12, 3rd triode 13 and the 4th triode 14, the emitter of described first triode 11 is connected with the emitter of the second triode 12 and is connected to wherein one end of former limit winding, the grounded collector of the second triode 12, the emitter of described 3rd triode 13 is connected with the emitter of the 4th triode 14 and is connected to the wherein other end of former limit winding by serial connection one capacitance 2, the grounded collector of the 4th triode 14, the base stage of the first triode 11 and the base stage short circuit of the second triode 12 are also connected to two inputs of one the 4th Schmidt trigger 34 simultaneously by serial connection one first input resistance 21, the base stage of the 3rd triode 13 and the base stage short circuit of the 4th triode 14 are also connected to the output of the 4th Schmidt trigger 34 by serial connection one second input resistance 22.
high-frequency square-wave signal output circuit comprises the first Schmidt trigger 31, second Schmidt trigger 32 and the 3rd Schmidt trigger 33, two inputs of the 4th Schmidt trigger 34 are connected to the output of the 3rd Schmidt trigger 33 simultaneously, two inputs of the 3rd Schmidt trigger 33 are connected to the output of the second Schmidt trigger 32 simultaneously and are connected to two inputs of the second Schmidt trigger 32 by the second input capacitance 42 of being connected in series successively and the 3rd input resistance 23 simultaneously, the serial connection place of the second input capacitance 42 and the 3rd input resistance 23 is also connected to two inputs of the first Schmidt trigger 31 simultaneously by the 4th input resistance 24, two inputs of the second Schmidt trigger 32 are also connected to the output of the first Schmidt trigger 31 simultaneously, the operating voltage end of the first Schmidt trigger 31 is connected to supply power voltage VCC, supply power voltage VCC is by ground connection after serial connection one first input capacitance 41.First triode 11 and the 3rd triode 13 are NPN type pipe, and the second triode 12 and the 4th triode 14 are positive-negative-positive pipe.
power amplification output circuit comprises the first output capacitance 51, vice-side winding wherein one end is connected to negative supply output 72, and the vice-side winding wherein other end is connected to positive supply output 71 by the first output capacitance 51 of being connected in series successively and the first output diode 61 and is connected to negative supply output 72 by the first output capacitance 51 of being connected in series successively and the second output diode 62 simultaneously.Two output electrochemical capacitors 81 of mutually connecting are connected with between positive supply output 71 and negative supply output 72.Two output auxiliary capacitors 82 of mutually connecting are connected with between positive supply output 71 and negative supply output 72.The first output resistance 83 and the voltage stabilizing didoe 84 of series connection is mutually connected with between positive supply output 71 and negative supply output 72.Two series connection place of the output electrochemical capacitor 81 of series connection mutually, series connection place of output auxiliary capacitor 82 of two mutual series connection and series connection place of the first output resistance 83 and voltage stabilizing didoe 84 are all connected to common port COM place.The second output resistance 85 is also connected with between positive supply output 71 and common port COM.
Claims (10)
1. the power circuit driven for IGBT, it is characterized in that: comprise transformer (1), the former limit winding switching of described transformer (1) has high-frequency signal circuit for generating, the secondary of described transformer (1) has two vice-side winding be arranged above and below, each vice-side winding is all connected with power amplification output circuit, described high-frequency signal circuit for generating comprises the high-frequency square-wave signal output circuit with multiple Schmidt trigger composition and the push-pull amplifier circuit be formed by connecting with high-frequency square-wave signal output circuit, described push-pull amplifier circuit is connected on the former limit winding of transformer (1).
2. a kind of power circuit driven for IGBT according to claim 1, it is characterized in that: push-pull amplifier circuit comprises the first triode (11), second triode (12), 3rd triode (13) and the 4th triode (14), the emitter of described first triode (11) is connected with the emitter of the second triode (12) and is connected to wherein one end of former limit winding, the grounded collector of the second triode (12), the emitter of described 3rd triode (13) is connected with the emitter of the 4th triode (14) and passes through the wherein other end that serial connection one capacitance (2) is connected to former limit winding, the grounded collector of the 4th triode (14), the base stage of the first triode (11) and the base stage short circuit of the second triode (12) are also connected to two inputs of one the 4th Schmidt trigger (34) simultaneously by serial connection one first input resistance (21), the base stage of the 3rd triode (13) and the base stage short circuit of the 4th triode (14) are also connected to the output of the 4th Schmidt trigger (34) by serial connection one second input resistance (22).
3. a kind of power circuit driven for IGBT according to claim 2, it is characterized in that: high-frequency square-wave signal output circuit comprises the first Schmidt trigger (31), second Schmidt trigger (32) and the 3rd Schmidt trigger (33), two inputs of the 4th Schmidt trigger (34) are connected to the output of the 3rd Schmidt trigger (33) simultaneously, two inputs of the 3rd Schmidt trigger (33) are connected to the output of the second Schmidt trigger (32) simultaneously and are connected to two inputs of the second Schmidt trigger (32) by the second input capacitance (42) of being connected in series successively and the 3rd input resistance (23) simultaneously, the serial connection place of the second input capacitance (42) and the 3rd input resistance (23) is also connected to two inputs of the first Schmidt trigger (31) simultaneously by the 4th input resistance (24), two inputs of the second Schmidt trigger (32) are also connected to the output of the first Schmidt trigger (31) simultaneously, the operating voltage end of the first Schmidt trigger (31) is connected to supply power voltage VCC, supply power voltage VCC is by serial connection one first input capacitance (41) ground connection afterwards.
4. a kind of power circuit driven for IGBT according to claim 3, it is characterized in that: the first triode (11) and the 3rd triode (13) are NPN type pipe, the second triode (12) and the 4th triode (14) are positive-negative-positive pipe.
5. a kind of power circuit driven for IGBT according to claim 1 or 2 or 3 or 4, it is characterized in that: power amplification output circuit comprises the first output capacitance (51), vice-side winding wherein one end is connected to negative supply output (72), and the vice-side winding wherein other end is connected to positive supply output (71) by the first output capacitance (51) of being connected in series successively and the first output diode (61) and passes through the first output capacitance (51) of being connected in series successively and the second output diode (62) is connected to negative supply output (72) simultaneously.
6. a kind of power circuit driven for IGBT according to claim 5, is characterized in that: be connected with two output electrochemical capacitors (81) of mutually connecting between positive supply output (71) and negative supply output (72).
7. a kind of power circuit driven for IGBT according to claim 6, is characterized in that: be connected with two output auxiliary capacitors (82) of mutually connecting between positive supply output (71) and negative supply output (72).
8. a kind of power circuit driven for IGBT according to claim 7, is characterized in that: the first output resistance (83) and the voltage stabilizing didoe (84) that are connected with series connection mutually between positive supply output (71) and negative supply output (72).
9. a kind of power circuit driven for IGBT according to claim 8, is characterized in that: two series connection place of the output electrochemical capacitor (81) of series connection mutually, series connection place of output auxiliary capacitor (82) of two mutual series connection and series connection place of the first output resistance (83) and voltage stabilizing didoe (84) are all connected to common port COM place.
10. a kind of power circuit driven for IGBT according to claim 9, is characterized in that: be also connected with the second output resistance (85) between positive supply output (71) and common port COM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590317.5U CN204967620U (en) | 2015-08-07 | 2015-08-07 | Be used for IGBT driven power supply circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590317.5U CN204967620U (en) | 2015-08-07 | 2015-08-07 | Be used for IGBT driven power supply circuit |
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| CN204967620U true CN204967620U (en) | 2016-01-13 |
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| CN201520590317.5U Active CN204967620U (en) | 2015-08-07 | 2015-08-07 | Be used for IGBT driven power supply circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024557A (en) * | 2015-08-07 | 2015-11-04 | 姚晓武 | Power circuit for driving insulted gate bipolar transistor (IGBT) |
| CN108023467A (en) * | 2017-12-04 | 2018-05-11 | 山东航天电子技术研究所 | A kind of two-way magnetization transformer isolation drive circuit |
-
2015
- 2015-08-07 CN CN201520590317.5U patent/CN204967620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105024557A (en) * | 2015-08-07 | 2015-11-04 | 姚晓武 | Power circuit for driving insulted gate bipolar transistor (IGBT) |
| CN108023467A (en) * | 2017-12-04 | 2018-05-11 | 山东航天电子技术研究所 | A kind of two-way magnetization transformer isolation drive circuit |
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