CN204089573U - A three-phase full-bridge and low-bridge IGBT driver with its own isolated power supply - Google Patents
A three-phase full-bridge and low-bridge IGBT driver with its own isolated power supply Download PDFInfo
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- CN204089573U CN204089573U CN201420545435.XU CN201420545435U CN204089573U CN 204089573 U CN204089573 U CN 204089573U CN 201420545435 U CN201420545435 U CN 201420545435U CN 204089573 U CN204089573 U CN 204089573U
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Abstract
The utility model discloses a three-phase full-bridge lower bridge IGBT driver with an isolation power supply, which comprises a circuit board and a driving circuit arranged on the circuit board, wherein the driving circuit comprises an isolation power supply converter circuit and an IGBT driving circuit; the isolated power converter circuit comprises an oscillation frequency generating circuit and a rectification output circuit, and the IGBT driving circuit comprises a signal input circuit, a signal judging circuit, a signal isolating circuit, a signal amplifying circuit, a power under-voltage protection circuit, a fault detection circuit and a fault blocking output circuit. The utility model adopts a brand-new three-phase full-bridge lower bridge driving circuit technology, effectively reduces the number of external devices and more reasonably utilizes the isolated power supply; the drive signal is transmitted in an isolation mode through the optical coupler, transmission delay time is short, common mode rejection ratio is high, signal distortion is small, consistency and stability of a drive switch tube can be guaranteed, integration level of a circuit is increased, reliability and practicability are high, and the drive switch tube can be widely applied to driving of various IGBTs or MOSFETs.
Description
Technical field
The utility model relates to a kind of driver, specifically a kind ofly carries bridge IGBT driver under three full-bridges of insulating power supply.
Background technology
Because igbt (IGBT) has higher current capacity and voltage tolerance, switching frequency is high, and low conducting saturation voltage drop, input impedance is high, drives the features such as simple.Make its in, extensive use in high-power transformation system.Drive circuit, as the bridge between control circuit and power semiconductor, has vital effect in the performance and raising power system reliability and stability of abundant sharp IGBT.The function of IGBT drive circuit is that the control signal coming from control circuit is converted to the drive singal with enough power through isolation, ensures reliably opening and shutoff of IGBT.Meanwhile, IGBT drive circuit is also for providing safe electrical isolation between controller and power tube.In order to make IGBT be effectively protected when there is overcurrent or short circuit, defencive function is also integrated in drive circuit.The specific performance of IGBT driver requires to be mainly reflected in following several respects: because the input of IGBT grid has capacitance characteristic, in order to IGBT can be made to have switching speed faster, driver must can provide larger instant drive current, thus reduces switching loss; Require to provide perfect overcurrent and short-circuit protection function for IGBT; Because driver is between control circuit and power circuit, also require that driver provides enough safe distances and higher insulation voltage tolerance and higher common-mode rejection ratio.
IGBT drive products is in the market relatively also many, but most is the single tube IGBT driver not with insulating power supply or half-bridge driver, also self-powered single tube IGBT is had to drive and half-bridge IGBT driver, when applying, single tube IGBT driver need be many by quantity, circuit more complicated, distributed constant is larger; Half-bridge driver then volume is large, cost is also higher, middle low power inverter is applied, is subject to serious restriction, and the driving chip being exclusively used in three full-bridges is many at present, but be all adopt bootstrap approach to power, also can only drive the inverter that function is less, and larger power all have employed three half-bridge drivers or six individual driver composition.Circuit is more complicated and cost is also higher comparatively speaking, and the lower bridge IGBT driver being exclusively used in three full-bridges does not also have in the market.
Utility model content
The purpose of this utility model is to provide a kind of perfect in shape and function, dependable performance, with low cost carries bridge IGBT driver under three full-bridges of insulating power supply, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind ofly carry bridge IGBT driver under three full-bridges of insulating power supply, comprise circuit board and the drive circuit being arranged on circuit board, circuit board is provided with direct plugging-in or patch type connecting interface, drive circuit is connected with connecting interface, and drive circuit comprises insulating power supply converter circuit and IGBT drive circuit; Insulating power supply converter circuit comprises frequency of oscillation circuit for generating and rectifying output circuit, and IGBT drive circuit comprises signal input circuit, signal judging circuit, signal isolation circuit, signal amplification circuit, line under-voltage protective circuit, failure detector circuit, fault blockade output circuit.
As further program of the utility model: described frequency of oscillation circuit for generating comprises oscillator U1, electric capacity C1, electric capacity C2, power amplifier tube Q1 and power amplifier tube Q2, electric capacity C1 is connected to power input, 1 pin of oscillator U1 is connected positive source respectively with after 3 pin parallel connections, 2 pin of electric capacity C2 and transformer, 2 pin of oscillator U1, 4 pin, 7 pin and the electric capacity C2 other end all connect power supply ground, 8 pin of oscillator U1 connect the grid of power amplifier tube Q1 by resistance R1, 6 pin of oscillator U1 connect the grid of power amplifier tube Q2 by resistance R2, power amplifier tube Q1 is connected to power supply ground after being connected with the source electrode of power amplifier tube Q2, 1 pin of the drain electrode connection transformer T of power amplifier tube Q1, 3 pin of the drain electrode connection transformer of power amplifier tube Q2.
As further program of the utility model: described rectifying output circuit comprises diode D1, diode D2, diode D3, diode D4, electric capacity C3, electric capacity C4, resistance R3 and resistance R4, wherein 4 pin of the positive pole connection transformer T of diode D1, the negative pole of diode D1 connects diode D2 respectively, electric capacity C3, resistance R3 and insulating power supply Viso+, 6 pin of diode D2 positive pole connection transformer T, 5 pin of electric capacity C3 other end difference connection transformer T, 8 pin of transformer T, the resistance R3 other end, electric capacity C4, resistance R4 and insulating power supply COM, the electric capacity C4 other end connects diode D3 respectively, diode D4, the resistance R4 other end and insulating power supply Viso-, 7 pin of diode D3 other end connection transformer T, 9 pin of diode D4 other end connection transformer T.
As further program of the utility model: signal VIN1 contact resistance R1 and resistance R2 respectively in described signal input circuit, the resistance R2 other end connects 1 pin of diode D1, diode D2 and NAND gate U1A respectively, signal VIN2 is contact resistance R3 and resistance R4 respectively, the resistance R4 other end connects 4 pin of diode D3, diode D4 and NAND gate U1B respectively, signal VIN3 respectively contact resistance R5 and resistance R6, the resistance R6 other end connects 12 pin of diode D5, diode D6 and NAND gate U1D respectively.
As further program of the utility model: described signal judging circuit comprises NAND gate U1A, NAND gate U1B and NAND gate U1D, the 2 pin contact resistance R7 of NAND gate U1A, 3 pin of NAND gate U1A connect 1 pin of optocoupler U3 to signal isolation circuit, the 5 pin contact resistance R8 of NAND gate U1B, 6 pin of NAND gate U1B connect 1 pin of optocoupler U4 to signal isolation circuit, 11 pin of the 13 pin contact resistance R9 of NAND gate U1D, NAND gate U1D connect 1 pin of optocoupler U5 to signal isolation circuit.
As further program of the utility model: in described signal isolation circuit, 5 pin of optocoupler U3 connect electric capacity C1, resistance R12, resistance R13 and resistance R14 respectively, the 2 pin difference contact resistance R13 other ends of optocoupler U3 and the inverting input of comparator U7A, 3 pin of optocoupler U3 connect the electric capacity C1 other end and resistance R15 respectively, and the resistance R15 other end connects the in-phase input end of comparator U7A; 5 pin of optocoupler U4 connect electric capacity C2, resistance R16, resistance R17 and resistance R18 respectively, the 2 pin difference contact resistance R17 other ends of optocoupler U4 and the inverting input of comparator U7B, 3 pin of optocoupler U3 connect the electric capacity C2 other end and resistance R19 respectively, and the resistance R19 other end connects the in-phase input end of comparator U7B; 5 pin of optocoupler U5 connect electric capacity C3, resistance R20, resistance R21 and resistance R22 respectively, the 2 pin difference contact resistance R21 other ends of optocoupler U5 and the inverting input of comparator U7C, 3 pin of optocoupler U5 connect the electric capacity C3 other end and resistance R23 respectively, and the resistance R23 other end connects the in-phase input end of comparator U7C; The resistance R7 other end is the contact resistance R8 other end, the resistance R9 other end, resistance R30,1 pin of optocoupler U6,1 pin of reverser U2A, 4 pin of reverser U2B respectively, and 2 pin of optocoupler U6 connect 2 pin of reverser U9A.
As further program of the utility model: in described signal amplification circuit, the output of comparator U7A connects the output of comparator U7B, the output of comparator U7C, 1 pin of reverser U9A, the output of comparator U8A, the output of comparator U8B, the base stage of triode Q2, the base stage of triode Q4, resistance R24, the base stage of triode Q6, the base stage of triode Q8, resistance R26, the base stage of triode Q10, the base stage of triode Q12 and resistance R28 respectively; The resistance R24 other end is the collector electrode of connecting triode Q2, the collector electrode of triode Q3 respectively, the base stage of the emitter connecting triode Q3 of triode Q2, the base stage of the emitter difference contact resistance R25 and triode Q5 of triode Q4, the emitter of resistance R25 other end connecting triode Q5, outputs signal after the emitter of the collector electrode connecting triode Q3 of triode Q5; The resistance R26 other end is the collector electrode of connecting triode Q6, the collector electrode of triode Q7 respectively, the base stage of the emitter connecting triode Q7 of triode Q6, the base stage of the emitter difference contact resistance R27 and triode Q9 of triode Q8, the emitter of resistance R27 other end connecting triode Q9, outputs signal after the emitter of the collector electrode connecting triode Q7 of triode Q9; The resistance R28 other end is the collector electrode of connecting triode Q10, the collector electrode of triode Q11 respectively, the base stage of the emitter connecting triode Q11 of triode Q10, the base stage of the emitter difference contact resistance R29 and triode Q13 of triode Q12, the emitter of resistance R29 other end connecting triode Q13, outputs signal after the emitter of the collector electrode connecting triode Q11 of triode Q13.
As further program of the utility model: the inverting input of comparator U8A contact resistance R31 and diode D7 respectively in described line under-voltage protective circuit; the in-phase input end contact resistance R32 and resistance R33 respectively of comparator U8A; the resistance R31 other end is connected insulating power supply Viso+ with after the parallel connection of the resistance R32 other end, and diode D7 positive pole is connected insulating power supply COM with after the parallel connection of the resistance R33 other end.
As further program of the utility model: described failure detector circuit, in-phase input end contact resistance R34, the resistance R38 and slide rheostat R35 respectively of comparator U8B, the resistance R38 other end is connected with the output of resistance R39, electric capacity C4 and comparator U8B respectively, the resistance R39 other end is the contact resistance R34 other end and resistance R36 respectively, the inverting input of resistance R36 other end difference contact resistance R37, DESAT port and comparator U8B, the resistance R37 other end connects the slide rheostat R35 other end.
As the utility model further scheme: described fault is blocked in output circuit, 2 pin of reverser U2A connect 3 pin of reverser U2B, resistance R11 and RESET port respectively, the resistance R11 other end connects the grid of power amplifier tube Q1, and the drain electrode of power amplifier tube Q1 connects FAULT port.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts bridge drive circuit technology under three brand-new full-bridges, effectively reduces external devices quantity, the insulating power supply simultaneously also more reasonably utilized.Isolation transmission drive singal is realized by optocoupler, propagation delay time is short, common-mode rejection ratio is high, distorted signals is little, and possibility is strong, can ensure consistency and the stability of driving switch pipe, too increase the integrated level of circuit, reliability is high, practical, can be widely used in the driving of all kinds of IGBT or MOSFET.
Accompanying drawing explanation
Fig. 1 is the utility model insulating power supply converter circuit figure.
Fig. 2 is the utility model IGBT drive circuit figure.
Fig. 3 is the utility model IGBT drive circuit theory diagram.
Fig. 4 is signal input circuit figure in the utility model IGBT drive circuit.
Fig. 5 is signal amplification circuit figure in the utility model IGBT drive circuit.
Fig. 6 is line under-voltage protective circuit figure in the utility model IGBT drive circuit.
Fig. 7 is failure detector circuit figure in the utility model IGBT drive circuit.
Fig. 8 is that in the utility model IGBT drive circuit, fault blocks output circuit figure.
Fig. 9 is typical application circuit connection layout of the present utility model.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
In the utility model embodiment, a kind ofly carry bridge IGBT driver under three full-bridges of insulating power supply, comprise circuit board and the drive circuit being arranged on circuit board, circuit board is provided with direct plugging-in or patch type connecting interface, drive circuit is connected with connecting interface, and drive circuit comprises insulating power supply converter circuit and IGBT drive circuit; Insulating power supply converter circuit comprises frequency of oscillation circuit for generating and rectifying output circuit, and IGBT drive circuit comprises signal input circuit, signal judging circuit, signal isolation circuit, signal amplification circuit, line under-voltage protective circuit, failure detector circuit, fault blockade output circuit.
Refer to Fig. 1, frequency of oscillation circuit for generating comprises oscillator U1, electric capacity C1, electric capacity C2, power amplifier tube Q1 and power amplifier tube Q2, electric capacity C1 is connected to power input, 1 pin of oscillator U1 is connected positive source respectively with after 3 pin parallel connections, 2 pin of electric capacity C2 and transformer, 2 pin of oscillator U1, 4 pin, 7 pin and the electric capacity C2 other end all connect power supply ground, 8 pin of oscillator U1 connect the grid of power amplifier tube Q1 by resistance R1, 6 pin of oscillator U1 connect the grid of power amplifier tube Q2 by resistance R2, power amplifier tube Q1 is connected to power supply ground after being connected with the source electrode of power amplifier tube Q2, 1 pin of the drain electrode connection transformer T of power amplifier tube Q1, 3 pin of the drain electrode connection transformer of power amplifier tube Q2.
Rectifying output circuit, comprises diode D1, diode D2, diode D3, diode D4, electric capacity C3, electric capacity C4, resistance R3 and resistance R4, wherein 4 pin of the positive pole connection transformer T of diode D1, the negative pole of diode D1 connects diode D2 respectively, electric capacity C3, resistance R3 and insulating power supply Viso+, 6 pin of diode D2 positive pole connection transformer T, 5 pin of electric capacity C3 other end difference connection transformer T, 8 pin of transformer T, the resistance R3 other end, electric capacity C4, resistance R4 and insulating power supply COM, the electric capacity C4 other end connects diode D3 respectively, diode D4, the resistance R4 other end and insulating power supply Viso-, 7 pin of diode D3 other end connection transformer T, 9 pin of diode D4 other end connection transformer T.
Insulating power supply converter circuit provides the oscillator signal of recommending by oscillator U1, through transformer T after the power amplification of power amplifier tube Q1 and power amplifier tube Q2, thus by electrical energy transfer to primary side, by exporting the positive and negative dual output insulating power supply be isolated from each other after the rectification of primary side and filtering, thus be that under three full bridge drivers, bridge drives power supply.
Refer to Fig. 2 ~ 8, in IGBT drive circuit, three road drive singal enter fault judging circuit respectively by current-limiting resistance after signal input circuit, after being judged by NAND gate, drive singal inputs to signal isolation circuit, by optocoupler, drive singal is transferred to driving side to signal amplification circuit, exports after signal is amplified;
In signal input circuit, signal VIN1 is contact resistance R1 and resistance R2 respectively, the resistance R2 other end connects 1 pin of diode D1, diode D2 and NAND gate U1A respectively, signal VIN2 is contact resistance R3 and resistance R4 respectively, the resistance R4 other end connects 4 pin of diode D3, diode D4 and NAND gate U1B respectively, signal VIN3 respectively contact resistance R5 and resistance R6, the resistance R6 other end connects 12 pin of diode D5, diode D6 and NAND gate U1D respectively.Wherein resistance R2, resistance R4 and resistance R6 are current-limiting resistance; resistance R1, resistance R3 and resistance R5 are pull down resistor; connect with input signal and ground respectively, diode D1, diode D2, diode D3, diode D4, diode D5 and diode D6 provide signal input protection.
Signal judging circuit comprises NAND gate U1A, NAND gate U1B and NAND gate U1D, the 2 pin contact resistance R7 of NAND gate U1A, 3 pin of NAND gate U1A connect 1 pin of optocoupler U3 to signal isolation circuit, the 5 pin contact resistance R8 of NAND gate U1B, 6 pin of NAND gate U1B connect 1 pin of optocoupler U4 to signal isolation circuit, 11 pin of the 13 pin contact resistance R9 of NAND gate U1D, NAND gate U1D connect 1 pin of optocoupler U5 to signal isolation circuit.
In signal isolation circuit, 5 pin of optocoupler U3 connect electric capacity C1, resistance R12, resistance R13 and resistance R14 respectively, the 2 pin difference contact resistance R13 other ends of optocoupler U3 and the inverting input of comparator U7A, 3 pin of optocoupler U3 connect the electric capacity C1 other end and resistance R15 respectively, and the resistance R15 other end connects the in-phase input end of comparator U7A; 5 pin of optocoupler U4 connect electric capacity C2, resistance R16, resistance R17 and resistance R18 respectively, the 2 pin difference contact resistance R17 other ends of optocoupler U4 and the inverting input of comparator U7B, 3 pin of optocoupler U3 connect the electric capacity C2 other end and resistance R19 respectively, and the resistance R19 other end connects the in-phase input end of comparator U7B; 5 pin of optocoupler U5 connect electric capacity C3, resistance R20, resistance R21 and resistance R22 respectively, the 2 pin difference contact resistance R21 other ends of optocoupler U5 and the inverting input of comparator U7C, 3 pin of optocoupler U5 connect the electric capacity C3 other end and resistance R23 respectively, and the resistance R23 other end connects the in-phase input end of comparator U7C; The resistance R7 other end is the contact resistance R8 other end, the resistance R9 other end, resistance R30,1 pin of optocoupler U6,1 pin of reverser U2A, 4 pin of reverser U2B respectively, and 2 pin of optocoupler U6 connect 2 pin of reverser U9A;
In signal amplification circuit, the output of comparator U7A connects the output of comparator U7B, the output of comparator U7C, 1 pin of reverser U9A, the output of comparator U8A, the output of comparator U8B, the base stage of triode Q2, the base stage of triode Q4, resistance R24, the base stage of triode Q6, the base stage of triode Q8, resistance R26, the base stage of triode Q10, the base stage of triode Q12 and resistance R28 respectively; The resistance R24 other end is the collector electrode of connecting triode Q2, the collector electrode of triode Q3 respectively, the base stage of the emitter connecting triode Q3 of triode Q2, the base stage of the emitter difference contact resistance R25 and triode Q5 of triode Q4, the emitter of resistance R25 other end connecting triode Q5, outputs signal after the emitter of the collector electrode connecting triode Q3 of triode Q5; The resistance R26 other end is the collector electrode of connecting triode Q6, the collector electrode of triode Q7 respectively, the base stage of the emitter connecting triode Q7 of triode Q6, the base stage of the emitter difference contact resistance R27 and triode Q9 of triode Q8, the emitter of resistance R27 other end connecting triode Q9, outputs signal after the emitter of the collector electrode connecting triode Q7 of triode Q9; The resistance R28 other end is the collector electrode of connecting triode Q10, the collector electrode of triode Q11 respectively, the base stage of the emitter connecting triode Q11 of triode Q10, the base stage of the emitter difference contact resistance R29 and triode Q13 of triode Q12, the emitter of resistance R29 other end connecting triode Q13, outputs signal after the emitter of the collector electrode connecting triode Q11 of triode Q13;
In line under-voltage protective circuit; the inverting input contact resistance R31 and diode D7 respectively of comparator U8A; the in-phase input end contact resistance R32 and resistance R33 respectively of comparator U8A; the resistance R31 other end is connected insulating power supply Viso+ with after the parallel connection of the resistance R32 other end, and diode D7 positive pole is connected insulating power supply COM with after the parallel connection of the resistance R33 other end.Insulating power supply Viso+ and insulating power supply COM; whether under-voltagely detection and isolation power supply is carried out by the voltage compare of resistance R31, resistance R32, resistance R33 and diode D7; when driving isolation supply voltage is lower than setting voltage; when setting voltage is generally 12.0V ~ 12.8V; on resistance R33, dividing potential drop is just less than diode D7 pressure drop; comparator U7B exports will be reverse; drive output signal is dragged down; by reverser U9A and optocoupler U6, fault-signal is delivered to signal input side simultaneously, thus carries out under-voltage protection.
Failure detector circuit, in-phase input end contact resistance R34, the resistance R38 and slide rheostat R35 respectively of comparator U8B, the output of resistance R38 other end difference contact resistance R39, electric capacity C4 and comparator U8B, the resistance R39 other end is the contact resistance R34 other end and resistance R36 respectively, the inverting input of resistance R36 other end difference contact resistance R37, DESAT port and comparator U8B, the resistance R37 other end connects the slide rheostat R35 other end.Fault-signal enters resistance R36/ resistance R37 by DESAT port, by determining malfunction with the voltage compare of resistance R34/ resistance R35, also can set false voltage by regulating the resistance of variable resistor R35 simultaneously, fault-signal carries out error protection through comparator U8B, also can regulate the blind area time by changing electric capacity C4; When after generation overcurrent or short circuit, resistance R37 dividing potential drop is greater than the dividing potential drop of resistance R34, thus makes comparator U8B reverse, drive output signal is dragged down, by reverser U9A and optocoupler U6, fault-signal is delivered to signal input side simultaneously.
Fault is blocked in output circuit, and 2 pin of reverser U2A connect 3 pin of reverser U2B, resistance R11 and RESET port respectively, and the resistance R11 other end connects the grid of power amplifier tube Q1, and the drain electrode of power amplifier tube Q1 connects FAULT port.Fault-signal is delivered to data side by optocoupler U6, malfunction blockade is carried out by reverser U2A and reverser U2B, when after trouble shooting, hold to RESET to adding a low level signal by outside, namely lockout circuit reset signal is given, lockout circuit just can reset unblock, and circuit enters normal mode; Fault-signal by reverser U2A and resistance R11 driving power amplifier tube Q1, thus is outputted to signal controlling end by fault-signal.
Refer to Fig. 9, by carry insulating power supply three phase full bridge under bridge IGBT driver applications in motor running circuit, external devices only stays a triode and two diodes, adds the integrated level of motor running circuit, and dependable with function strengthens.
The utility model adopts bridge drive circuit technology under three brand-new full-bridges, effectively reduces external devices quantity, the insulating power supply simultaneously also more reasonably utilized.Isolation transmission drive singal is realized by optocoupler, propagation delay time is short, common-mode rejection ratio is high, distorted signals is little, and possibility is strong, can ensure consistency and the stability of driving switch pipe, too increase the integrated level of circuit, reliability is high, practical, can be widely used in the driving of all kinds of IGBT or MOSFET.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (10)
1. one kind carries bridge IGBT driver under three full-bridges of insulating power supply, comprise circuit board and the drive circuit being arranged on circuit board, it is characterized in that, circuit board is provided with direct plugging-in or patch type connecting interface, drive circuit is connected with connecting interface, and drive circuit comprises insulating power supply converter circuit and IGBT drive circuit; Insulating power supply converter circuit comprises frequency of oscillation circuit for generating and rectifying output circuit, and IGBT drive circuit comprises signal input circuit, signal judging circuit, signal isolation circuit, signal amplification circuit, line under-voltage protective circuit, failure detector circuit, fault blockade output circuit.
2. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, described frequency of oscillation circuit for generating comprises oscillator U1, electric capacity C1, electric capacity C2, power amplifier tube Q1 and power amplifier tube Q2, electric capacity C1 is connected to power input, 1 pin of oscillator U1 is connected positive source respectively with after 3 pin parallel connections, 2 pin of electric capacity C2 and transformer, 2 pin of oscillator U1, 4 pin, 7 pin and the electric capacity C2 other end all connect power supply ground, 8 pin of oscillator U1 connect the grid of power amplifier tube Q1 by resistance R1, 6 pin of oscillator U1 connect the grid of power amplifier tube Q2 by resistance R2, power amplifier tube Q1 is connected to power supply ground after being connected with the source electrode of power amplifier tube Q2, 1 pin of the drain electrode connection transformer T of power amplifier tube Q1, 3 pin of the drain electrode connection transformer of power amplifier tube Q2.
3. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, described rectifying output circuit comprises diode D1, diode D2, diode D3, diode D4, electric capacity C3, electric capacity C4, resistance R3 and resistance R4, wherein 4 pin of the positive pole connection transformer T of diode D1, the negative pole of diode D1 connects diode D2 respectively, electric capacity C3, resistance R3 and insulating power supply Viso+, 6 pin of diode D2 positive pole connection transformer T, 5 pin of electric capacity C3 other end difference connection transformer T, 8 pin of transformer T, the resistance R3 other end, electric capacity C4, resistance R4 and insulating power supply COM, the electric capacity C4 other end connects diode D3 respectively, diode D4, the resistance R4 other end and insulating power supply Viso-, 7 pin of diode D3 other end connection transformer T, 9 pin of diode D4 other end connection transformer T.
4. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, signal VIN1 contact resistance R1 and resistance R2 respectively in described signal input circuit, the resistance R2 other end connects diode D1 respectively, 1 pin of diode D2 and NAND gate U1A, signal VIN2 is contact resistance R3 and resistance R4 respectively, the resistance R4 other end connects diode D3 respectively, 4 pin of diode D4 and NAND gate U1B, signal VIN3 is contact resistance R5 and resistance R6 respectively, the resistance R6 other end connects diode D5 respectively, 12 pin of diode D6 and NAND gate U1D.
5. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, described signal judging circuit comprises NAND gate U1A, NAND gate U1B and NAND gate U1D, the 2 pin contact resistance R7 of NAND gate U1A, 3 pin of NAND gate U1A connect 1 pin of optocoupler U3 to signal isolation circuit, the 5 pin contact resistance R8 of NAND gate U1B, 6 pin of NAND gate U1B connect 1 pin of optocoupler U4 to signal isolation circuit, 11 pin of the 13 pin contact resistance R9 of NAND gate U1D, NAND gate U1D connect 1 pin of optocoupler U5 to signal isolation circuit.
6. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, in described signal isolation circuit, 5 pin of optocoupler U3 connect electric capacity C1, resistance R12, resistance R13 and resistance R14 respectively, the 2 pin difference contact resistance R13 other ends of optocoupler U3 and the inverting input of comparator U7A, 3 pin of optocoupler U3 connect the electric capacity C1 other end and resistance R15 respectively, and the resistance R15 other end connects the in-phase input end of comparator U7A; 5 pin of optocoupler U4 connect electric capacity C2, resistance R16, resistance R17 and resistance R18 respectively, the 2 pin difference contact resistance R17 other ends of optocoupler U4 and the inverting input of comparator U7B, 3 pin of optocoupler U3 connect the electric capacity C2 other end and resistance R19 respectively, and the resistance R19 other end connects the in-phase input end of comparator U7B; 5 pin of optocoupler U5 connect electric capacity C3, resistance R20, resistance R21 and resistance R22 respectively, the 2 pin difference contact resistance R21 other ends of optocoupler U5 and the inverting input of comparator U7C, 3 pin of optocoupler U5 connect the electric capacity C3 other end and resistance R23 respectively, and the resistance R23 other end connects the in-phase input end of comparator U7C; The resistance R7 other end is the contact resistance R8 other end, the resistance R9 other end, resistance R30,1 pin of optocoupler U6,1 pin of reverser U2A, 4 pin of reverser U2B respectively, and 2 pin of optocoupler U6 connect 2 pin of reverser U9A.
7. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, in described signal amplification circuit, the output of comparator U7A connects the output of comparator U7B, the output of comparator U7C, 1 pin of reverser U9A, the output of comparator U8A, the output of comparator U8B, the base stage of triode Q2, the base stage of triode Q4, resistance R24, the base stage of triode Q6, the base stage of triode Q8, resistance R26, the base stage of triode Q10, the base stage of triode Q12 and resistance R28 respectively; The resistance R24 other end is the collector electrode of connecting triode Q2, the collector electrode of triode Q3 respectively, the base stage of the emitter connecting triode Q3 of triode Q2, the base stage of the emitter difference contact resistance R25 and triode Q5 of triode Q4, the emitter of resistance R25 other end connecting triode Q5, outputs signal after the emitter of the collector electrode connecting triode Q3 of triode Q5; The resistance R26 other end is the collector electrode of connecting triode Q6, the collector electrode of triode Q7 respectively, the base stage of the emitter connecting triode Q7 of triode Q6, the base stage of the emitter difference contact resistance R27 and triode Q9 of triode Q8, the emitter of resistance R27 other end connecting triode Q9, outputs signal after the emitter of the collector electrode connecting triode Q7 of triode Q9; The resistance R28 other end is the collector electrode of connecting triode Q10, the collector electrode of triode Q11 respectively, the base stage of the emitter connecting triode Q11 of triode Q10, the base stage of the emitter difference contact resistance R29 and triode Q13 of triode Q12, the emitter of resistance R29 other end connecting triode Q13, outputs signal after the emitter of the collector electrode connecting triode Q11 of triode Q13.
8. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply; it is characterized in that; the inverting input of comparator U8A contact resistance R31 and diode D7 respectively in described line under-voltage protective circuit; the in-phase input end contact resistance R32 and resistance R33 respectively of comparator U8A; the resistance R31 other end is connected insulating power supply Viso+ with after the parallel connection of the resistance R32 other end, and diode D7 positive pole is connected insulating power supply COM with after the parallel connection of the resistance R33 other end.
9. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, described failure detector circuit, the in-phase input end contact resistance R34 respectively of comparator U8B, resistance R38 and slide rheostat R35, the resistance R38 other end respectively with resistance R39, electric capacity C4 is connected with the output of comparator U8B, the resistance R39 other end is the contact resistance R34 other end and resistance R36 respectively, the resistance R36 other end is contact resistance R37 respectively, the inverting input of DESAT port and comparator U8B, the resistance R37 other end connects the slide rheostat R35 other end.
10. according to claim 1ly carry bridge IGBT driver under three full-bridges of insulating power supply, it is characterized in that, described fault is blocked in output circuit, 2 pin of reverser U2A connect 3 pin of reverser U2B, resistance R11 and RESET port respectively, the resistance R11 other end connects the grid of power amplifier tube Q1, and the drain electrode of power amplifier tube Q1 connects FAULT port.
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| CN201420545435.XU CN204089573U (en) | 2014-09-22 | 2014-09-22 | A three-phase full-bridge and low-bridge IGBT driver with its own isolated power supply |
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| CN201420545435.XU CN204089573U (en) | 2014-09-22 | 2014-09-22 | A three-phase full-bridge and low-bridge IGBT driver with its own isolated power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106533155A (en) * | 2016-12-26 | 2017-03-22 | 阳光电源股份有限公司 | Multilevel circuit and isolated power circuit thereof |
| CN109358655A (en) * | 2018-10-15 | 2019-02-19 | 潘秀兰 | The turned position control device of turntable |
| CN110880858A (en) * | 2018-09-05 | 2020-03-13 | 深圳市英合科技有限公司 | Driving circuit of switching power supply, half-bridge topology switching power supply and electronic equipment |
| CN110994959A (en) * | 2019-12-06 | 2020-04-10 | 潍坊学院 | Transformer isolation IGBT drive control system, method and circuit |
| CN114301368A (en) * | 2021-12-24 | 2022-04-08 | 兰州飞行控制有限责任公司 | Permanent magnet synchronous motor IPM isolation driving circuit based on vector control |
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2014
- 2014-09-22 CN CN201420545435.XU patent/CN204089573U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533155A (en) * | 2016-12-26 | 2017-03-22 | 阳光电源股份有限公司 | Multilevel circuit and isolated power circuit thereof |
| CN110880858A (en) * | 2018-09-05 | 2020-03-13 | 深圳市英合科技有限公司 | Driving circuit of switching power supply, half-bridge topology switching power supply and electronic equipment |
| CN109358655A (en) * | 2018-10-15 | 2019-02-19 | 潘秀兰 | The turned position control device of turntable |
| CN109358655B (en) * | 2018-10-15 | 2024-05-17 | 潘秀兰 | Rotary position control device of rotary table |
| CN110994959A (en) * | 2019-12-06 | 2020-04-10 | 潍坊学院 | Transformer isolation IGBT drive control system, method and circuit |
| CN110994959B (en) * | 2019-12-06 | 2021-11-12 | 潍坊学院 | A transformer isolated IGBT drive control system, method and circuit |
| CN114301368A (en) * | 2021-12-24 | 2022-04-08 | 兰州飞行控制有限责任公司 | Permanent magnet synchronous motor IPM isolation driving circuit based on vector control |
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