CN205283382U - Half -bridge driver of remote isolation control and power supply of no independent source of power - Google Patents
Half -bridge driver of remote isolation control and power supply of no independent source of power Download PDFInfo
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- CN205283382U CN205283382U CN201620024964.4U CN201620024964U CN205283382U CN 205283382 U CN205283382 U CN 205283382U CN 201620024964 U CN201620024964 U CN 201620024964U CN 205283382 U CN205283382 U CN 205283382U
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Abstract
The utility model discloses a half -bridge driver of remote isolation control and power supply of no independent source of power, including signal transmission circuit and signal reception and drive circuit, signal transmission circuit includes infrared transmitting tubes, power tube, resistance, electric capacity and power load, signal reception and drive circuit include high -pressure side signal reception and drive circuit and low tension side signal reception and drive circuit, high, low tension side signal reception all includes resistance, schottky diode, infrared receiving tube, electric capacity, slide -wire formula resistor, NPN switch tube and PNP switch tube with drive circuit. The utility model discloses can improve drive signal's frequency of operation, the power supply mode that can realize the weak current control forceful electric power, have independent power supply and get the electricity from high pressure department adopts the half -bridge driver that floats ground technology drive with last bridge, has guaranteed the security, has realized remote control, electric isolation, possess again whole circuit simple, reduced characteristics such as control circuit cost, control signal frequency height.
Description
Technical field
The utility model relates to the field of drivers in high-power conversion circuit, in particular to a kind of realizing remote signal transmission based on infrared light communication, without independent Power supply and floating the half-bridge driver controlled.
Background technology
Power Electronic Technique is an emerging electronic technology being applied to power domain, mainly refers to the technology using power electronic devices to be converted by electric energy and control. Through the development of 50 years, it obtained in the distribution of conventional industries equipment, communications and transportation, power system, computer system, communication system, new energy development and the product for civilian use etc. and applies more and more widely.
Semiconductor Converting Technology is then the core of Power Electronic Technique. Semiconductor Converting Technology mainly comprises rectification, inversion, copped wave, frequency conversion, covert etc., the topological diagram elementary cell that the Semiconductor Converting Technology of current main flow adopts is half bridge unit of two power electronic devices series connection, such as the employing of D class power amplifier is two and half bridge unit, what three-phase inversion, three commutating phases etc. adopted is three and half bridge unit, hands over 6 and half above bridge unit composition that the frequency transformer of straight friendship type adopts especially.
Half bridge unit is as the most basic topological diagram unit, the quality of its driving circuit almost determines the performance of whole half bridge unit, particularly electric energy at high pressure, big current convert, control field, general requirement driving circuit has the features such as electrical isolation, weakness control forceful electric power, controlled frequency height, structure are simple, safety performance height.
At present that high-tension side (upper pipe) control of half-bridge driver is very difficult, also abnormally dangerous, it is kilovolt on several hundred that general high voltage side obtains voltage.
The half-bridge drive circuit of current main flow mainly contains and adopts electric capacity to realize suspend bootstrapping driving, photoelectric coupler isolation driving, the driving of passive transformer, active transformer driving etc.
It is utilize bootstrap capacitor discharge and recharge and " floating ground " principle to make the output pole " suspension " of high-tension side (above pipe) realize the effect of weakness control forceful electric power that electric capacity realizes suspension bootstrapping driving, method is simple, and integrated modules existing a large amount of on the market, but due to input and output altogether, do not have isolation reason, the occasion of high pressure can not be applied to, and when there is short circuit or burning fault in the power conversion circuit of half bridge unit composition, owing to not having the reason of isolation also can affect pilot circuit, security incident even can be caused.
The feature that though photoelectricity coupling mechanism possesses compact, price is cheap, optocoupler has again bigger time of lag (high speed type photoelectricity coupling mechanism is generally also greater than 300ns), and reaction is relatively slow, limits the operating frequency of controller; The output stage of photoelectricity coupling mechanism needs the accessory power supply of isolation to power, if three-phase inverter is then containing 3 half bridge unit, at least needs 4 accessory power supply to power, significantly increases the complexity of system and improve making total cost; And optocoupler can not be used for some extra-high voltage occasion, optocoupler is very little due to what do, and the distance of isolation is very near, and signal and the extra high voltage line of pilot circuit are in close contact, easily produce very big electromagnetic interference, occur security incident control circuit to be easy to be leaked electricity or arc light burns.
It is exactly the output Direct driver insulated gate device at transformer secondary output that passive transformer drives, although method is simple, independent driving power supply is not needed yet, but output waveform distortion is relatively big, can reduce the efficiency of whole system, particularly when control signal dutycycle conversion scope is big, transformer amplitude changes too greatly, work may be caused abnormal, burn device, cause security incident, therefore be only applicable to the occasion that change in duty cycle is little, efficiency requirements is not high.
It is exactly the signal that transformer only provides isolation that active transformer drives, separately having shaping amplification circuit to drive insulated-gate power device at transformer secondary output, certain drive waveforms is better, but electric coupling device of sharing the same light is the same, need to provide independent accessory power supply to power in addition, supply amplifier. Too increase the complicated process of system and make total cost, and if accessory power supply is dealt with improperly, also can introduce parasitic interference.
Practical novel content
For above shortcomings in prior art, the utility model provides one based on infrared light communication and floating ground know-why, it is possible to carries out remote isolated controlling, can improve the operating frequency of actuate signal, can realize vulnerabilities scan forceful electric power, adopt, with the power supply mode from the power taking of high pressure place and upper bridge, the half-bridge driver floating ground technology humanized without independently-powered.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme:
Remote isolated controlling with without the half-bridge driver of independent Power supply, comprise signal transmission circuit and Signal reception and driving circuit;
Described signal transmission circuit comprises infrared emission pipe I, infrared emission pipe II, infrared emission pipe III, infrared emission pipe IV, infrared emission pipe V, infrared emission pipe VI, power tube Q2, power tube Q10, resistance R4, resistance R16, electric capacity C2, electric capacity C4 and power load; The positive pole of described infrared emission pipe III and the positive pole of infrared emission pipe IV are all connected with the power supply VCC1 of signal transmission circuit by power load, the negative pole of described infrared emission pipe III is connected with the positive pole of infrared emission pipe II, the negative pole of described infrared emission pipe II is connected with the positive pole of infrared emission pipe I, the negative pole of described infrared emission pipe I is connected with the emtting electrode of power tube Q2, and the base stage of described power tube Q2 is connected with on high-tension side control signal input terminus HIN by resistance R4; The negative pole of described infrared emission pipe IV is connected with the positive pole of infrared emission pipe V, the negative pole of described infrared emission pipe V is connected with the positive pole of infrared emission pipe VI, the negative pole of described infrared emission pipe VI is connected with the emtting electrode of power tube Q10, and the base stage of described power tube Q10 is connected with the control signal input terminus LIN of low-tension side by resistance R16; The positive pole of described electric capacity C2 and electric capacity C4 is connected with the power supply VCC1 of signal transmission circuit respectively; The collector electrode of the negative pole of described electric capacity C2, the negative pole of electric capacity C4, power tube Q2 and the collector electrode of power tube Q10 ground connection respectively;
Described Signal reception and driving circuit comprise high-side signal reception and receive and driving circuit with driving circuit and low-side signal;
Described high-side signal receives and comprises resistance R1, resistance R2, NPN switching tube Q1, schottky diode D1, infrared receiving tube I, infrared receiving tube II, electric capacity C1, resistance R5, resistance R6, resistance R3, slide wire type resistor W1, resistance R7, resistance R8, NPN switching tube Q3, NPN switching tube Q4 and PNP switching tube Q5 with driving circuit, the power supply end VCC2 of half-bridge circuit is connected with driving in one end of described resistance R2, the other end of resistance R2 is connected with one end of resistance R1, the other end of described resistance R2 is connected with the collector electrode of NPN switching tube Q1, the other end of described resistance R1 is connected with the base stage of NPN switching tube Q1 and the negative pole of schottky diode D1 respectively, the positive pole of described schottky diode D1 respectively with the positive pole of infrared receiving tube II, the emtting electrode of NPN switching tube Q4, the collector electrode of PNP switching tube Q5 and control signal be connected with reference to end Hvss, the negative pole of described infrared receiving tube II is connected with the positive pole of infrared receiving tube I, the negative pole of described infrared receiving tube I is connected with the positive pole of electric capacity C1 and one end of resistance R5 respectively, the negative pole of described electric capacity C1 is connected with the base stage of NPN switching tube Q4 and one end of resistance R6 respectively, the other end of described resistance R5, the other end of resistance R6, one end of resistance R3 and the collector electrode of NPN switching tube Q3 respectively emtting electrode with NPN switching tube Q1 be connected, the other end of described resistance R3 is connected with the collector electrode of NPN switching tube Q4 by slide wire type resistor W1, one end of described resistance R7 is connected with the collector electrode of NPN switching tube Q4, the other end of resistance R7 is connected with the base stage of NPN switching tube Q3 and the base stage of PNP switching tube Q5 respectively, the emtting electrode of described NPN switching tube Q3 and the emtting electrode of PNP switching tube Q5 are all connected with on high-tension side control signal end Hvo by resistance R8, described infrared receiving tube I and infrared receiving tube II receive the signal that infrared emission pipe I, infrared emission pipe II and infrared emission pipe III send,
Described low-side signal receives and comprises resistance R9, resistance R10, NPN switching tube Q6, schottky diode D4, infrared receiving tube III, infrared receiving tube IV, electric capacity C3, resistance R12, resistance R13, resistance R11, slide wire type resistor W2, resistance R14, resistance R15, NPN switching tube Q7, NPN switching tube Q8 and PNP switching tube Q9 with driving circuit, the power supply end VCC2 of half-bridge circuit is connected with driving in one end of described resistance R10, the other end of resistance R10 is connected with one end of resistance R9, the other end of described resistance R10 is connected with the collector electrode of NPN switching tube Q6, the other end of described resistance R9 is connected with the base stage of NPN switching tube Q6 and the negative pole of schottky diode D4 respectively, the positive pole of described schottky diode D4 respectively with the positive pole of infrared receiving tube IV, the emtting electrode of NPN switching tube Q8, the collector electrode of PNP switching tube Q9 and control signal be connected with reference to end Lvss, the negative pole of described infrared receiving tube IV is connected with the positive pole of infrared receiving tube III, the negative pole of described infrared receiving tube III is connected with the positive pole of electric capacity C3 and one end of resistance R12 respectively, the negative pole of described electric capacity C3 is connected with the base stage of NPN switching tube Q8 and one end of resistance R13 respectively, the other end of described resistance R12, the other end of resistance R13, one end of resistance R11 and the collector electrode of NPN switching tube Q7 respectively emtting electrode with NPN switching tube Q6 be connected, the other end of described resistance R11 is connected with the collector electrode of NPN switching tube Q8 by slide wire type resistor W2, one end of described resistance R14 is connected with the collector electrode of NPN switching tube Q8, the other end of resistance R14 is connected with the base stage of NPN switching tube Q7 and the base stage of PNP switching tube Q9 respectively, the emtting electrode of described NPN switching tube Q7 and the emtting electrode of PNP switching tube Q9 are all connected with the control signal end Lvo of low-tension side by resistance R15, described infrared receiving tube III and infrared receiving tube IV receive the signal that infrared emission pipe IV, infrared emission pipe V and infrared emission pipe VI send.
As a kind of preferred version of the present utility model, described infrared emission pipe I, infrared emission pipe II and the distance between infrared emission pipe III and infrared receiving tube I and infrared receiving tube II equal infrared emission pipe IV, infrared emission pipe V and the distance between infrared emission pipe VI and infrared receiving tube III and infrared receiving tube IV.
Technique effect of the present utility model is: the utility model have employed signal transmission circuit and Signal reception and driving circuit, the mode of infrared communication is adopted to realize signal long-distance transmissions, control, the operating frequency of actuate signal can be improved, vulnerabilities scan forceful electric power can be realized, adopt, with the power supply mode from the power taking of high pressure place and upper bridge, the half-bridge driver floating ground technology humanized without independently-powered, ensure that security, achieve teletype control, electrical isolation, possess again overall circuit simple, reduce the feature such as pilot circuit cost, control signal frequency height.
Accompanying drawing explanation
Fig. 1 is the schematic circuit of a kind of remote isolated controlling with the half-bridge driver without independent Power supply.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of remote isolated controlling with comprise signal transmission circuit and Signal reception and driving circuit without the half-bridge driver of independent Power supply.
Signal transmission circuit comprises infrared emission pipe I, infrared emission pipe II, infrared emission pipe III, infrared emission pipe IV, infrared emission pipe V, infrared emission pipe VI, power tube Q2, power tube Q10, resistance R4, resistance R16, electric capacity C2, electric capacity C4 and power load. The positive pole of infrared emission pipe III and the positive pole of infrared emission pipe IV are all connected with the power supply VCC1 of signal transmission circuit by power load, the negative pole of infrared emission pipe III is connected with the positive pole of infrared emission pipe II, the negative pole of infrared emission pipe II is connected with the positive pole of infrared emission pipe I, the negative pole of infrared emission pipe I is connected with the emtting electrode of power tube Q2, and the base stage of power tube Q2 is connected with on high-tension side control signal input terminus HIN by resistance R4. The negative pole of infrared emission pipe IV is connected with the positive pole of infrared emission pipe V, the negative pole of infrared emission pipe V is connected with the positive pole of infrared emission pipe VI, the negative pole of infrared emission pipe VI is connected with the emtting electrode of power tube Q10, and the base stage of power tube Q10 is connected with the control signal input terminus LIN of low-tension side by resistance R16. The positive pole of electric capacity C2 and electric capacity C4 is connected with the power supply VCC1 of signal transmission circuit respectively. The collector electrode of the negative pole of electric capacity C2, the negative pole of electric capacity C4, power tube Q2 and the collector electrode of power tube Q10 ground connection respectively.
Signal reception and driving circuit comprise high-side signal reception and receive and driving circuit with driving circuit and low-side signal.
High-side signal receives and comprises resistance R1, resistance R2, NPN switching tube Q1, schottky diode D1, infrared receiving tube I, infrared receiving tube II, electric capacity C1, resistance R5, resistance R6, resistance R3, slide wire type resistor W1, resistance R7, resistance R8, NPN switching tube Q3, NPN switching tube Q4 and PNP switching tube Q5 with driving circuit. the power supply end VCC2 of half-bridge circuit is connected with driving in one end of resistance R2, the other end of resistance R2 is connected with one end of resistance R1, the other end of resistance R2 is connected with the collector electrode of NPN switching tube Q1, the other end of resistance R1 is connected with the base stage of NPN switching tube Q1 and the negative pole of schottky diode D1 respectively, the positive pole of schottky diode D1 respectively with the positive pole of infrared receiving tube II, the emtting electrode of NPN switching tube Q4, the collector electrode of PNP switching tube Q5 and control signal be connected with reference to end Hvss. the negative pole of infrared receiving tube II is connected with the positive pole of infrared receiving tube I, the negative pole of infrared receiving tube I is connected with the positive pole of electric capacity C1 and one end of resistance R5 respectively, the negative pole of electric capacity C1 is connected with the base stage of NPN switching tube Q4 and one end of resistance R6 respectively, the other end of resistance R5, the other end of resistance R6, one end of resistance R3 and the collector electrode of NPN switching tube Q3 respectively emtting electrode with NPN switching tube Q1 be connected, the other end of resistance R3 is connected with the collector electrode of NPN switching tube Q4 by slide wire type resistor W1, one end of resistance R7 is connected with the collector electrode of NPN switching tube Q4, the other end of resistance R7 is connected with the base stage of NPN switching tube Q3 and the base stage of PNP switching tube Q5 respectively, the emtting electrode of NPN switching tube Q3 and the emtting electrode of PNP switching tube Q5 are all connected with on high-tension side control signal end Hvo by resistance R8. infrared receiving tube I and infrared receiving tube II receive the signal that infrared emission pipe I, infrared emission pipe II and infrared emission pipe III send.
Low-side signal receives and comprises resistance R9, resistance R10, NPN switching tube Q6, schottky diode D4, infrared receiving tube III, infrared receiving tube IV, electric capacity C3, resistance R12, resistance R13, resistance R11, slide wire type resistor W2, resistance R14, resistance R15, NPN switching tube Q7, NPN switching tube Q8 and PNP switching tube Q9 with driving circuit. the power supply end VCC2 of half-bridge circuit is connected with driving in one end of resistance R10, the other end of resistance R10 is connected with one end of resistance R9, the other end of described resistance R10 is connected with the collector electrode of NPN switching tube Q6, the other end of resistance R9 is connected with the base stage of NPN switching tube Q6 and the negative pole of schottky diode D4 respectively, the positive pole of schottky diode D4 respectively with the positive pole of infrared receiving tube IV, the emtting electrode of NPN switching tube Q8, the collector electrode of PNP switching tube Q9 and control signal be connected with reference to end Lvss. the negative pole of infrared receiving tube IV is connected with the positive pole of infrared receiving tube III, the negative pole of infrared receiving tube III is connected with the positive pole of electric capacity C3 and one end of resistance R12 respectively, the negative pole of electric capacity C3 is connected with the base stage of NPN switching tube Q8 and one end of resistance R13 respectively, the other end of resistance R12, the other end of resistance R13, one end of resistance R11 and the collector electrode of NPN switching tube Q7 respectively emtting electrode with NPN switching tube Q6 be connected, the other end of resistance R11 is connected with the collector electrode of NPN switching tube Q8 by slide wire type resistor W2, one end of resistance R14 is connected with the collector electrode of NPN switching tube Q8, the other end of resistance R14 is connected with the base stage of NPN switching tube Q7 and the base stage of PNP switching tube Q9 respectively, the emtting electrode of NPN switching tube Q7 and the emtting electrode of PNP switching tube Q9 are all connected with the control signal end Lvo of low-tension side by resistance R15. infrared receiving tube III and infrared receiving tube IV receive the signal that infrared emission pipe IV, infrared emission pipe V and infrared emission pipe VI send.
Infrared emission pipe I, infrared emission pipe II and the distance between infrared emission pipe III and infrared receiving tube I and infrared receiving tube II equal infrared emission pipe IV, infrared emission pipe V and the distance between infrared emission pipe VI and infrared receiving tube III and infrared receiving tube IV.
Signal transmission circuit be input as GND, HIN, LIN and VCC1. VCC1 and GND is respectively power supply and the ground terminal of signal transmission circuit, is generally light current. HIN and LIN is respectively the control signal input terminus of high-tension side and low-tension side, and in order to increase signal transmission distance, each control signal adopts 3 infrared emission pipes to launch signal respectively. Power tube Q2 and power tube Q10 is respectively the infrared emission pipe driving mechanism of high-tension side and low-tension side, ensures normal circuit operation; Adopting two bulky capacitor C2, C4 energy storage, energy required when meeting control signal temporal variation, whole circuit is carried out current limliting by the power load at power supply place.
Signal reception and driving circuit be input as VCC2, export as Hvo, Lvo, Hvss and Lvss. VCC2 connects the power supply end of the half-bridge circuit of driving, is generally forceful electric power. Hvo and Hvss be on high-tension side control signal end and control signal with reference to end, Lvo and Lvss be the control signal end of low-tension side and control signal with reference to end.
For high-tension side, the dividing potential drop voltage stabilizing circuit that schottky diode D1, NPN switching tube Q1, resistance R1 and resistance R2 form is that high-tension side circuit is powered, and provides the control signal ground, high-tension side in floating ground technology with reference to end simultaneously. for ensureing that the accuracy of Signal transmissions is with improving transmission range, adopts two infrared receiving tubes of receiver pope I and infrared receiving tube II to receive control signal. infrared receiving tube I and infrared receiving tube II are connected with resistance R5, after receiving control signal, export the signal reverse with control signal. signal owing to receiving is very weak, after electric capacity C1 is coupled removal direct current biasing, by resistance R6, NPN switching tube Q4, the single tube common emitter that slide wire type resistor W1 and resistance R3 forms amplifies circuit and carries out control signal amplifying shaping, single tube penetrates level amplification circuit altogether simultaneously has reverse effect again that control signal is reverse, the signal obtained i.e. control signal waveform with original is identical, achieve long-distance transmissions control signal, and waveform is not reversed, then by signal by NPN switching tube Q3, the push-pull drive circuit that PNP switching tube Q5 and resistance R8 forms exports high-tension side control signal.
The mode of operation of low-tension side is with the on high-tension side mode of operation of reason, it should be noted that, the dividing potential drop voltage stabilizing circuit of low-tension side is owing to being power to low-tension side, pressure reduction is bigger, divide the dividing potential drop ratio of compressive resistance R9, resistance R10 bigger than on high-tension side dividing potential drop ratio, and in order to the work energy providing enough to Signal reception and driving circuit, it is that high-tension side or point compressive resistance R1 of low-tension side, resistance R2, resistance R9 and resistance R10 must adopt high-power small resistance value resistance.
When whole circuit working, in order to ensure there is no phase shift relative between the high-tension side of transmission circuit and the actuate signal of low-tension side between the high-tension side of Signal reception and driving circuit and the actuate signal of low-tension side, it is necessary to the distance ensured between high-tension side infrared emission pipe I, infrared emission pipe II, the infrared receiving tube of infrared emission pipe III and high-tension side I, infrared receiving tube II equals low-tension side infrared emission pipe IV, infrared emission pipe V, infrared emission pipe VI and the distance between the infrared receiving tube of low-tension side III, infrared receiving tube VI. Simultaneously in the process of Signal transmissions, owing to propagation distance is far away, in communication process, the dutycycle of the control signal received has certain loss, can be smaller than the dutycycle of original signal, so add a slide wire type resistor W1 and slide wire type resistor W2 respectively in high-tension side and low-tension side, regulate these two slide wire type resistors can change magnification and the quiescent point of common emitter amplification circuit, thus the loss in compensating signal transmitting procedure, ensure that the control signal that receiving end receives is identical with the original signal launching end.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although the utility model being described in detail with reference to better embodiment, it will be understood by those within the art that, the technical solution of the utility model can be modified or equivalent replacement, and not departing from objective and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (2)
1. a remote isolated controlling and the half-bridge driver without independent Power supply, it is characterised in that: comprise signal transmission circuit and Signal reception and driving circuit;
Described signal transmission circuit comprises infrared emission pipe I, infrared emission pipe II, infrared emission pipe III, infrared emission pipe IV, infrared emission pipe V, infrared emission pipe VI, power tube Q2, power tube Q10, resistance R4, resistance R16, electric capacity C2, electric capacity C4 and power load; The positive pole of described infrared emission pipe III and the positive pole of infrared emission pipe IV are all connected with the power supply VCC1 of signal transmission circuit by power load, the negative pole of described infrared emission pipe III is connected with the positive pole of infrared emission pipe II, the negative pole of described infrared emission pipe II is connected with the positive pole of infrared emission pipe I, the negative pole of described infrared emission pipe I is connected with the emtting electrode of power tube Q2, and the base stage of described power tube Q2 is connected with on high-tension side control signal input terminus HIN by resistance R4; The negative pole of described infrared emission pipe IV is connected with the positive pole of infrared emission pipe V, the negative pole of described infrared emission pipe V is connected with the positive pole of infrared emission pipe VI, the negative pole of described infrared emission pipe VI is connected with the emtting electrode of power tube Q10, and the base stage of described power tube Q10 is connected with the control signal input terminus LIN of low-tension side by resistance R16; The positive pole of described electric capacity C2 and electric capacity C4 is connected with the power supply VCC1 of signal transmission circuit respectively; The collector electrode of the negative pole of described electric capacity C2, the negative pole of electric capacity C4, power tube Q2 and the collector electrode of power tube Q10 ground connection respectively;
Described Signal reception and driving circuit comprise high-side signal reception and receive and driving circuit with driving circuit and low-side signal;
Described high-side signal receives and comprises resistance R1, resistance R2, NPN switching tube Q1, schottky diode D1, infrared receiving tube I, infrared receiving tube II, electric capacity C1, resistance R5, resistance R6, resistance R3, slide wire type resistor W1, resistance R7, resistance R8, NPN switching tube Q3, NPN switching tube Q4 and PNP switching tube Q5 with driving circuit, the power supply end VCC2 of half-bridge circuit is connected with driving in one end of described resistance R2, the other end of resistance R2 is connected with one end of resistance R1, the other end of described resistance R2 is connected with the collector electrode of NPN switching tube Q1, the other end of described resistance R1 is connected with the base stage of NPN switching tube Q1 and the negative pole of schottky diode D1 respectively, the positive pole of described schottky diode D1 respectively with the positive pole of infrared receiving tube II, the emtting electrode of NPN switching tube Q4, the collector electrode of PNP switching tube Q5 and control signal be connected with reference to end Hvss, the negative pole of described infrared receiving tube II is connected with the positive pole of infrared receiving tube I, the negative pole of described infrared receiving tube I is connected with the positive pole of electric capacity C1 and one end of resistance R5 respectively, the negative pole of described electric capacity C1 is connected with the base stage of NPN switching tube Q4 and one end of resistance R6 respectively, the other end of described resistance R5, the other end of resistance R6, one end of resistance R3 and the collector electrode of NPN switching tube Q3 respectively emtting electrode with NPN switching tube Q1 be connected, the other end of described resistance R3 is connected with the collector electrode of NPN switching tube Q4 by slide wire type resistor W1, one end of described resistance R7 is connected with the collector electrode of NPN switching tube Q4, the other end of resistance R7 is connected with the base stage of NPN switching tube Q3 and the base stage of PNP switching tube Q5 respectively, the emtting electrode of described NPN switching tube Q3 and the emtting electrode of PNP switching tube Q5 are all connected with on high-tension side control signal end Hvo by resistance R8, described infrared receiving tube I and infrared receiving tube II receive the signal that infrared emission pipe I, infrared emission pipe II and infrared emission pipe III send,
Described low-side signal receives and comprises resistance R9, resistance R10, NPN switching tube Q6, schottky diode D4, infrared receiving tube III, infrared receiving tube IV, electric capacity C3, resistance R12, resistance R13, resistance R11, slide wire type resistor W2, resistance R14, resistance R15, NPN switching tube Q7, NPN switching tube Q8 and PNP switching tube Q9 with driving circuit, the power supply end VCC2 of half-bridge circuit is connected with driving in one end of described resistance R10, the other end of resistance R10 is connected with one end of resistance R9, the other end of described resistance R10 is connected with the collector electrode of NPN switching tube Q6, the other end of described resistance R9 is connected with the base stage of NPN switching tube Q6 and the negative pole of schottky diode D4 respectively, the positive pole of described schottky diode D4 respectively with the positive pole of infrared receiving tube IV, the emtting electrode of NPN switching tube Q8, the collector electrode of PNP switching tube Q9 and control signal be connected with reference to end Lvss, the negative pole of described infrared receiving tube IV is connected with the positive pole of infrared receiving tube III, the negative pole of described infrared receiving tube III is connected with the positive pole of electric capacity C3 and one end of resistance R12 respectively, the negative pole of described electric capacity C3 is connected with the base stage of NPN switching tube Q8 and one end of resistance R13 respectively, the other end of described resistance R12, the other end of resistance R13, one end of resistance R11 and the collector electrode of NPN switching tube Q7 respectively emtting electrode with NPN switching tube Q6 be connected, the other end of described resistance R11 is connected with the collector electrode of NPN switching tube Q8 by slide wire type resistor W2, one end of described resistance R14 is connected with the collector electrode of NPN switching tube Q8, the other end of resistance R14 is connected with the base stage of NPN switching tube Q7 and the base stage of PNP switching tube Q9 respectively, the emtting electrode of described NPN switching tube Q7 and the emtting electrode of PNP switching tube Q9 are all connected with the control signal end Lvo of low-tension side by resistance R15, described infrared receiving tube III and infrared receiving tube IV receive the signal that infrared emission pipe IV, infrared emission pipe V and infrared emission pipe VI send.
2. a kind of remote isolated controlling according to claim 1 and the half-bridge driver without independent Power supply, it is characterised in that: described infrared emission pipe I, infrared emission pipe II and the distance between infrared emission pipe III and infrared receiving tube I and infrared receiving tube II equal infrared emission pipe IV, infrared emission pipe V and the distance between infrared emission pipe VI and infrared receiving tube III and infrared receiving tube IV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620024964.4U CN205283382U (en) | 2016-01-12 | 2016-01-12 | Half -bridge driver of remote isolation control and power supply of no independent source of power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620024964.4U CN205283382U (en) | 2016-01-12 | 2016-01-12 | Half -bridge driver of remote isolation control and power supply of no independent source of power |
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| CN205283382U true CN205283382U (en) | 2016-06-01 |
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|---|---|---|---|
| CN201620024964.4U Expired - Fee Related CN205283382U (en) | 2016-01-12 | 2016-01-12 | Half -bridge driver of remote isolation control and power supply of no independent source of power |
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| CN (1) | CN205283382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058637A (en) * | 2016-07-18 | 2016-10-26 | 柳州好顺科技有限公司 | Laser diode drive circuit |
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2016
- 2016-01-12 CN CN201620024964.4U patent/CN205283382U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058637A (en) * | 2016-07-18 | 2016-10-26 | 柳州好顺科技有限公司 | Laser diode drive circuit |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20160601 Termination date: 20170112 |