CN203313045U - Large-power switch power supply drive circuit - Google Patents
Large-power switch power supply drive circuit Download PDFInfo
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- CN203313045U CN203313045U CN2013203757743U CN201320375774U CN203313045U CN 203313045 U CN203313045 U CN 203313045U CN 2013203757743 U CN2013203757743 U CN 2013203757743U CN 201320375774 U CN201320375774 U CN 201320375774U CN 203313045 U CN203313045 U CN 203313045U
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Abstract
The utility model discloses a large-power switch power supply drive circuit. The drive circuit comprises: a control module which is for driving a half-bridge drive circuit which is realized by alternatively turning on an upper-end switch tube and a lower-end switch tube; a power control expansion module which is for collecting average currents of the upper-end switch tube and the lower-end switch tube in the half-bridge drive circuit, converting the collected average currents into voltages, and feeding back the voltages to the control module; and a drive power supply module which is for supplying power to the control module and the power control expansion module. The power control expansion module, the drive power supply module and the control module are combined to drive the upper-end switch tube and the lower-end switch tube in the half-bridge drive circuit; so that, compared with the prior art, the control module is allowed to control the output power of a power supply more orderly, the power outputting of the switch power supply can be enlarged greatly through the drive power supply module; besides, the large-power switch power supply drive circuit is simple in structure, low in cost, high in efficiency and more excellent in stability.
Description
Technical field
The utility model relates to the switch power technology field, is specifically related to a kind of high power switching power supply drive circuit, especially contains the Switching Power Supply of semi-bridge type controlled resonant converter.
Background technology
High speed development along with power electronic technology, power electronic equipment and people's work, the relation of life are day by day close, and electronic equipment all be unable to do without reliable power supply, the Switching Power Supply that entered the computer power supply round Realization eighties, the taken the lead in power supply of computer is regenerated, enter nineties Switching Power Supply and in succession enter various electronics, electric equipment field, stored-program control exchange, communication, electron detection device power supply, control appliance power supply etc. have all been used Switching Power Supply widely, have more promoted developing rapidly of switch power technology.
The existing semi-bridge type controlled resonant converter that adopts has the advantages that to reduce the switch power consumption as the Switching Power Supply of critical piece, but its power generally can only maintain the 300W left and right in application, limited greatly the range of application of this Switching Power Supply, and its internal control is comparatively complicated, feedback monitoring aspect adopts components and parts various, is unfavorable for reducing costs.
The utility model content
The utility model provides a kind of high power switching power supply drive circuit, can address the above problem.
A kind of high power switching power supply drive circuit that the utility model embodiment provides, comprise: for driving the control module of the half-bridge drive circuit of being realized by upper end switching tube and lower end switching tube alternate conduction, for the average current that gathers half-bridge drive circuit upper end switching tube and lower end switching tube average current and will collect, be converted to Voltage Feedback to the power of control module and control expansion module, and for the driving power module to control module and the power supply of power control expansion module; Control module comprises having be used to the output HO that drives described upper end switching tube, be used to the output LO that drives described lower end switching tube, the locked end BO of the whole control module of locking when too high for detection of described average current input; Power is controlled expansion module and is comprised be used to being connected to lower end switching tube switch passage and with a sampling resistor, be connected in series the PO input that the node place carries out described average current sampling.
Preferably, power is controlled expansion module and is also comprised operational amplifier A 1, voltage-stabiliser tube W1 and diode D4, the PO input is connected to the input in the same way of operational amplifier A 1 by a resistance R 18, the output VDD of driving power module forms a reference voltage through the cathode regulation end that a resistance R 22 is carried in voltage-stabiliser tube W1, the cathode regulation end of voltage-stabiliser tube W1 is connected to the reverse input end of operational amplifier A 1 through resistance R 20, between operational amplifier A 1 and earth terminal GND, also be connected a resistance R 9, the output of operational amplifier A 1 is connected to the locked end BO of control module through diode D4.
Preferably, control module also comprises be used to receiving the feedback end FB of power output end feedback signal, for the quick pass broken ends of fractured bone FF that control module is turn-offed fast, reach for control module being turn-offed to the broken ends of fractured bone SF of pass at a slow speed of a plurality of pulse periods, power is controlled expansion module and is also comprised a ratio amplifying circuit and a bleeder circuit, the output of ratio amplifying circuit exports the feedback end FB of control module to through a diode D5, the PO input successively passing ratio amplifying circuit and the bleeder circuit signal feedback that will collect to the quick pass broken ends of fractured bone FF of control module, the output of ratio amplifying circuit is also successively by resistance R 23 and resistance R 10 ground connection of series connection, the broken ends of fractured bone SF of pass at a slow speed of the series connection node link control module of resistance R 23 and resistance R 10.
Preferably, described ratio amplifying circuit comprises that operational amplifier A 2, an end are connected to the input in the same way of operational amplifier A 2 as the ratio input amplifier other end resistance R 19, an end are connected to resistance R 21, the end ground connection other end that a reference voltage output end other end is connected to the reverse input end of operational amplifier A 2 and are connected to the resistance R 7 of operational amplifier A 2 reverse input ends and are connected in parallel on respectively capacitor C 6 and the resistance R 12 between operational amplifier reverse input end and output, and the output of operational amplifier A 2 is as the output of ratio amplifying circuit.
Preferably, also comprise an optocoupler feedback loop, optocoupler feedback loop input is connected to power output end, and the output of optocoupler feedback loop is connected to the feedback end FB of control module.
Preferably, the described reference voltage output end cathode regulation end that is voltage-stabiliser tube W1.
Preferably, described driving power module comprises for the direct voltage input being transformed to the power supply chip U2 of square-wave voltage output, described power supply chip comprises power end VD1, feedback end F1, input D and output S, wherein, output S is successively by an inductance L 1 and capacitor C 12 ground connection, and output S is also through a backward diode D2 ground connection; The tie point of inductance L 1 and capacitor C 12 is connected to power end VD1 through a diode D3, the negative electrode of diode D3 is connected to feedback end F1 through a voltage-stabiliser tube W2, between the cathode regulation end of voltage-stabiliser tube W2 and the output S of power supply chip U2, be connected a storage capacitor C15, the cathode regulation end of voltage-stabiliser tube W2 is as the output VDD of driving power module.
Preferably, described power supply chip U2 adopts the VIPER22 chip.
Preferably, described control module also comprises that one be used to connecting the suspension ground end HVG of described half-bridge drive circuit upper end switching tube output, described output HO drives described upper end switching tube by a suspension high voltage drive circuit, the suspension high voltage drive circuit comprises NPN type triode Q1 and positive-negative-positive triode Q3, the base stage of two triodes all connects described output HO, the emitter of triode Q1 is by the emitter of resistance R 1 a connecting triode Q3, the collector electrode of triode Q3 connects described suspension ground end HVG, the collector electrode of triode Q1 connects described suspension ground end HVG through a capacitor C 1, the output VDD of driving power module is successively by the collector electrode of a resistance R 2 and a diode D1 connecting triode Q1, the emitter of triode Q3 is for driving described upper end switching tube.
Preferably, described output LO drives described lower end switching tube by a low-voltage driving circuit, low-voltage driving circuit comprises NPN type triode Q2 and positive-negative-positive triode Q4, the base stage of two triodes all connects described output LO, the emitter of triode Q2 is through the emitter of resistance R 3 connecting triode Q4, the grounded collector of triode Q4, the collector electrode of triode Q2 connects the output VDD of driving power module, and the emitter of triode Q4 is for driving described lower end switching tube.
Preferably, described control module is the NCP1396 family chip.
Technique scheme can be found out, because the utility model embodiment adopts power to control expansion module, with the driving power module, be combined control module upper end switching tube and the lower end switching tube of half-bridge drive circuit driven, than prior art, can make control module control more in an orderly manner the power output of power supply, and by the driving power module, can significantly draw high the power stage of Switching Power Supply, and simple in structure, with low cost, efficiency is high, stability is better.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit block diagram of the utility model embodiment Switching Power Supply;
Fig. 2 is the circuit theory diagrams of half-bridge drive circuit;
Fig. 3 is the circuit theory diagrams of Switching Power Supply in the utility model embodiment;
Fig. 4 is the circuit theory diagrams of driving power module in the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment:
The utility model embodiment provides a kind of high power switching power supply drive circuit, in conjunction with Fig. 1, Fig. 2 and shown in Figure 3, comprise: control module, driving power module and power are controlled expansion module, control module has two outputs, be output HO and output LO, two outputs are for corresponding upper end switching tube and the lower end switching tube that drives half-bridge drive circuit of difference, the physical circuit schematic diagram of this half-bridge drive circuit can be with reference to shown in Figure 2, switching tube M1 and switching tube M2 alternate conduction under the driving effect of HO end and LO end in this half-bridge drive circuit, thereby the voltage that makes the VOC end acts on transformer B1 primary coil and forms oscillating voltage, be coupled to secondary coil and realize power supply output, this belongs to the Switching Power Supply way of output of typical semi-bridge type resonant transformation formula.Be understandable that, for the half-bridge drive circuit with upper end switching tube and lower end switching tube, those skilled in the art can be known by prior art, the circuit diagram that the utility model embodiment only be take in Fig. 4 is made introduction as example, for the half-bridge drive circuit with upper end switching tube and the realization of lower end switching tube alternate conduction after other various distortion, the control module still be applicable in the utility model embodiment drives.
In the utility model embodiment, find a current sampling point on original half-bridge drive circuit, this current sampling point can obtain the average current value of half-bridge drive circuit, because upper end switch M1 and lower end switching tube M2 in half-bridge drive circuit realize alternate conduction, and the time of conducting is identical, in any one loop of two switching tubes, sample, all can obtain average current value, thus, in the utility model embodiment, power is controlled expansion module and is comprised be used to being connected to lower end switching tube M2 switch passage and be connected in series with a sampling resistor R4 PO input that the node place carries out described average current sampling.
In order to realize the alternate conduction to upper end switching tube M1 and lower end switching tube M2, in the utility model embodiment, control module comprises having be used to the output HO that drives described upper end switching tube, be used to the output LO that drives described lower end switching tube, the locked end BO of the whole control module of locking when too high for detection of described average current input.Control module is the NCP1396 family chip in the utility model embodiment, can specifically adopt NCP1396A chip, NCP1396B chip or NCP1396D chip.The utility model embodiment will be usingd the NCP1396A chip as control module, realize the purpose of high-power output and control, certainly, have the chip of said function for other, must belong in protection range of the present utility model.
Specifically as shown in Figure 3, control module adopts the NCP1396A chip, the power supply of whole circuit is realized by the output VDD of driving power module, power is controlled expansion module and is also comprised operational amplifier A 1, voltage-stabiliser tube W1 and diode D4, the PO input is connected to the input in the same way of operational amplifier A 1 by a resistance R 18, the output VDD of driving power module forms a reference voltage V G through the cathode regulation end that a resistance R 22 is carried in voltage-stabiliser tube W1, in order to make this reference voltage V G can be more stable, in other embodiment, voltage-stabiliser tube W1 can be substituted with a reference source chip, thereby the assurance feedback signal can be undertaken exporting after accurate computing by operational amplifier, the cathode regulation end of voltage-stabiliser tube W1 is connected to the reverse input end of operational amplifier A 1 through resistance R 20, between operational amplifier A 1 and earth terminal GND, also be connected a resistance R 9, the output of operational amplifier A 1 is connected to the locked end BO of control module through diode D4.
NCP1396A chip as control module also comprises be used to receiving the feedback end FB of power output end feedback signal, for the quick pass broken ends of fractured bone FF that control module is turn-offed fast, reach for control module being turn-offed to the broken ends of fractured bone SF of pass at a slow speed of a plurality of pulse periods, turn-off fast the magnitude of voltage referred to when broken ends of fractured bone FF place, quick pass herein and exceeded the threshold values of setting, the NCP1396A chip turn-offs immediately and recovers at once, the time compole namely turn-offed is short, and after if the magnitude of voltage that closes at a slow speed broken ends of fractured bone SF place exceeded the threshold values that this end sets, can turn-off several pulse periods, be about after 300ms bootrom again.
Power is controlled expansion module and is also comprised a ratio amplifying circuit and a bleeder circuit, the output of ratio amplifying circuit exports the feedback end FB of control module to through a diode D5, diode D5 one-way conduction, can prevent that the voltage signal Comparative Examples amplifying circuit that Switching Power Supply optocoupler feedback loop feeds back from exerting an influence, and realizes the effect that two kinds of feedback signals are isolated from each other; The PO input successively passing ratio amplifying circuit and the bleeder circuit signal feedback that will collect to the quick pass broken ends of fractured bone FF of control module, the output of ratio amplifying circuit is also successively by resistance R 23 and resistance R 10 ground connection of series connection, the broken ends of fractured bone SF of pass at a slow speed of the series connection node link control module of resistance R 23 and resistance R 10.Described ratio amplifying circuit comprises that operational amplifier A 2, an end are connected to the input in the same way of operational amplifier A 2 as the ratio input amplifier other end resistance R 19, an end are connected to resistance R 21, the end ground connection other end that a reference voltage output end other end is connected to the reverse input end of operational amplifier A 2 and are connected to the resistance R 7 of operational amplifier A 2 reverse input ends and are connected in parallel on respectively capacitor C 6 and the resistance R 12 between operational amplifier reverse input end and output, and the output of operational amplifier A 2 is as the output of ratio amplifying circuit.Herein, in order to simplify circuit structure, cost-saving, the reference voltage output end that a described end of resistance R 21 connects is the cathode regulation end of voltage-stabiliser tube W1, and namely operational amplifier A 1 adopts same reference voltage V G as the computing benchmark with operational amplifier A 2.
In the utility model embodiment, also comprise an optocoupler feedback loop, optocoupler feedback loop input is connected to power output end, and the output of optocoupler feedback loop is connected to the feedback end FB of control module.
The feedback end FB of control module receives two kinds of feedback signals, the output voltage feedback signal that first power output end place feeds back via the optocoupler feedback loop, it two is after average current sampling, through power, to control the current sampling signal that the ratio amplifying circuit of expansion module feeds back by the PO input in half-bridge drive circuit, therefore this control module can realize multiple control, has higher safety and stability.
Below in conjunction with the feedback control principle that accompanying drawing is controlled expansion module to this power, make introduction.
On the one hand, when the voltage of PO input occurs to rise, after the conversion of operational amplifier A 1; if the voltage of output reaches 1.04V, the locked end of control module can detect the variation of its pin voltage, thereby by the control module locking; quit work, protection power source.
On the other hand, when the voltage of PO input rises, voltage through the output of ratio amplifying circuit forms feedback voltage on feedback end FB, this feedback voltage is when 0.6 to 5.3V changes, output voltage (comprising the output of output HO and output LO) that can the FEEDBACK CONTROL control module, certainly, it is upper that the feedback voltage on the optocoupler feedback loop equally also acts on this feedback end FB, and two kinds of voltages are with high being as the criterion of voltage levvl, voltage on one end feedback end FB has exceeded 5.3V, and the output of control module is not controlled by feedback end FB, now, voltage on feedback end FB acts on the quick pass broken ends of fractured bone FF of control module through the resistance R 5 of bleeder circuit, make control module turn-off fast, as the now still lasting rising of voltage of PO input, the output voltage of ratio amplifying circuit also rises thereupon, in case it surpasses certain amplitude (being set as 7V in the utility model embodiment), the output voltage of ratio amplifying circuit acts on the broken ends of fractured bone SF of pass at a slow speed of control module through resistance R 23 and resistance R 10, now on resistance R 10, obtain certain dividing potential drop (obtaining the 1V dividing potential drop in the utility model embodiment on resistance R 10), from but close at a slow speed the broken ends of fractured bone SF control module turn-offed to 300ms, Switching Power Supply is carried out to multiple protective, as can be seen here, can be by the sampling of the average current to half-bridge circuit in the utility model embodiment, the orderly control of realization to control module, guaranteed the order of Switching Power Supply work, stability and reliability.
Specifically as shown in Figure 4, described driving power module comprises for the direct voltage input being transformed to the power supply chip U2 of square-wave voltage output, power supply chip U2 adopts the VIPER22 chip, described VIPER22 chip comprises power end VD1, feedback end F1, input D and output S, wherein, output S is successively by an inductance L 1 and capacitor C 12 ground connection, and output S is also through a backward diode D2 ground connection; The tie point of inductance L 1 and capacitor C 12 is connected to power end VD1 through a diode D3, the negative electrode of diode D3 is connected to feedback end F1 through a voltage-stabiliser tube W2, between the cathode regulation end of voltage-stabiliser tube W2 and the output S of power supply chip U2, be connected a storage capacitor C15, the cathode regulation end of voltage-stabiliser tube W2 is as the output VDD of driving power module.
In Switching Power Supply, alternating voltage obtains a direct voltage after rectifier bridge or other rectification chips, this direct voltage is exported square wave at output S after the VIPER22 chip, when output S is high level output, to inductance L 1 energy storage of magnetizing, simultaneously to capacitor C 12 chargings, the current circuit of now connecting is inductance L 1, capacitor C 1, the loop that GND end and diode D2 form, after inductance L 1 and capacitor C 12 are full of, output S output low level, because voltage on inductance L 1 can not suddenly change, the end SS that inductance L 1 connects output S is low level, even can form negative pressure, diode D2 can keep the afterflow in loop, now, inductance L 1 and capacitor C 12 to capacitor C 15 chargings, when on capacitor C 15, electric weight reaches a certain amount of, arrive feedback end F1 through voltage-stabiliser tube W2 through D3, and the formation galvanic current is pressed output on voltage-stabiliser tube W2.
Power stage for further lifting switch power supply, control module described in the utility model embodiment also comprises that one be used to connecting the suspension ground end HVG of described half-bridge drive circuit upper end switching tube output, described output HO drives described upper end switching tube by a suspension high voltage drive circuit, the suspension high voltage drive circuit comprises NPN type triode Q1 and positive-negative-positive triode Q3, the base stage of two triodes all connects described output HO, the emitter of triode Q1 is by the emitter of resistance R 1 a connecting triode Q3, the collector electrode of triode Q3 connects described suspension ground end HVG, the collector electrode of triode Q1 connects described suspension ground end HVG through a capacitor C 1, the output VDD of driving power module is successively by the collector electrode of a resistance R 2 and a diode D1 connecting triode Q1, the emitter of triode Q3 is for driving described upper end switching tube.
Correspondingly, described output LO drives described lower end switching tube by a low-voltage driving circuit, low-voltage driving circuit comprises NPN type triode Q2 and positive-negative-positive triode Q4, the base stage of two triodes all connects described output LO, the emitter of triode Q2 is through the emitter of resistance R 3 connecting triode Q4, the grounded collector of triode Q4, the collector electrode of triode Q2 connects the output VDD of driving power module, and the emitter of triode Q4 is for driving described lower end switching tube.
As can be known by circuit theory, suspension high voltage drive circuit and low-voltage driving circuit are by introducing the power supply of driving power module, the power of the output HO of control module and output LO is drawn high, when the output HO of control module output high level or low level, the emitter of triode Q3 is exported high level or low level too, namely the driving signal sequence for upper end switching tube M1 is constant, but power is significantly enhanced; The output LO of control module is also like this.
The above high power switching power supply drive circuit that the utility model embodiment is provided is described in detail, applied specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment is just be used to helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (11)
1. high power switching power supply drive circuit, it is characterized in that, comprise: for driving the control module of the half-bridge drive circuit of being realized by upper end switching tube and lower end switching tube alternate conduction, for the average current that gathers half-bridge drive circuit upper end switching tube and lower end switching tube average current and will collect, be converted to Voltage Feedback to the power of control module and control expansion module, and for the driving power module to control module and the power supply of power control expansion module; Control module comprises having be used to the output HO that drives described upper end switching tube, be used to the output LO that drives described lower end switching tube, the locked end BO of the whole control module of locking when too high for detection of described average current input; Power is controlled expansion module and is comprised be used to being connected to lower end switching tube switch passage and with a sampling resistor, be connected in series the PO input that the node place carries out described average current sampling.
2. high power switching power supply drive circuit as claimed in claim 1, it is characterized in that, power is controlled expansion module and is also comprised operational amplifier A 1, voltage-stabiliser tube W1 and diode D4, the PO input is connected to the input in the same way of operational amplifier A 1 by a resistance R 18, the output VDD of driving power module forms a reference voltage through the cathode regulation end that a resistance R 22 is carried in voltage-stabiliser tube W1, the cathode regulation end of voltage-stabiliser tube W1 is connected to the reverse input end of operational amplifier A 1 through resistance R 20, between operational amplifier A 1 and earth terminal GND, also be connected a resistance R 9, the output of operational amplifier A 1 is connected to the locked end BO of control module through diode D4.
3. high power switching power supply drive circuit as claimed in claim 2, it is characterized in that, control module also comprises be used to receiving the feedback end FB of power output end feedback signal, for the quick pass broken ends of fractured bone FF that control module is turn-offed fast, reach for control module being turn-offed to the broken ends of fractured bone SF of pass at a slow speed of a plurality of pulse periods, power is controlled expansion module and is also comprised a ratio amplifying circuit and a bleeder circuit, the output of ratio amplifying circuit exports the feedback end FB of control module to through a diode D5, the PO input successively passing ratio amplifying circuit and the bleeder circuit signal feedback that will collect to the quick pass broken ends of fractured bone FF of control module, the output of ratio amplifying circuit is also successively by resistance R 23 and resistance R 10 ground connection of series connection, the broken ends of fractured bone SF of pass at a slow speed of the series connection node link control module of resistance R 23 and resistance R 10.
4. high power switching power supply drive circuit as claimed in claim 3, it is characterized in that, described ratio amplifying circuit comprises operational amplifier A 2, one end is connected to the resistance R 19 of the input in the same way of operational amplifier A 2 as the ratio input amplifier other end, one end is connected to the resistance R 21 that a reference voltage output end other end is connected to the reverse input end of operational amplifier A 2, the one end ground connection other end is connected to the resistance R 7 of operational amplifier A 2 reverse input ends and is connected in parallel on respectively capacitor C 6 and the resistance R 12 between operational amplifier reverse input end and output, the output of operational amplifier A 2 is as the output of ratio amplifying circuit.
5. high power switching power supply drive circuit as claimed in claim 3, is characterized in that, also comprises an optocoupler feedback loop, and optocoupler feedback loop input is connected to power output end, and the output of optocoupler feedback loop is connected to the feedback end FB of control module.
6. high power switching power supply drive circuit as claimed in claim 4, is characterized in that, the cathode regulation end that a described reference voltage output end is voltage-stabiliser tube W1.
7. high power switching power supply drive circuit as claimed in claim 1, it is characterized in that, described driving power module comprises for the direct voltage input being transformed to the power supply chip U2 of square-wave voltage output, described power supply chip comprises power end VD1, feedback end F1, input D and output S, wherein, output S is successively by an inductance L 1 and capacitor C 12 ground connection, and output S is also through a backward diode D2 ground connection; The tie point of inductance L 1 and capacitor C 12 is connected to power end VD1 through a diode D3, the negative electrode of diode D3 is connected to feedback end F1 through a voltage-stabiliser tube W2, between the cathode regulation end of voltage-stabiliser tube W2 and the output S of power supply chip U2, be connected a storage capacitor C15, the cathode regulation end of voltage-stabiliser tube W2 is as the output VDD of driving power module.
8. high power switching power supply drive circuit as claimed in claim 7, is characterized in that, described power supply chip U2 adopts the VIPER22 chip.
9. high power switching power supply drive circuit as claimed in claim 1, it is characterized in that, described control module also comprises that one be used to connecting the suspension ground end HVG of described half-bridge drive circuit upper end switching tube output, described output HO drives described upper end switching tube by a suspension high voltage drive circuit, the suspension high voltage drive circuit comprises NPN type triode Q1 and positive-negative-positive triode Q3, the base stage of two triodes all connects described output HO, the emitter of triode Q1 is by the emitter of resistance R 1 a connecting triode Q3, the collector electrode of triode Q3 connects described suspension ground end HVG, the collector electrode of triode Q1 connects described suspension ground end HVG through a capacitor C 1, the output VDD of driving power module is successively by the collector electrode of a resistance R 2 and a diode D1 connecting triode Q1, the emitter of triode Q3 is for driving described upper end switching tube.
10. high power switching power supply drive circuit as claimed in claim 1, it is characterized in that, described output LO drives described lower end switching tube by a low-voltage driving circuit, low-voltage driving circuit comprises NPN type triode Q2 and positive-negative-positive triode Q4, the base stage of two triodes all connects described output LO, the emitter of triode Q2 is through the emitter of resistance R 3 connecting triode Q4, the grounded collector of triode Q4, the collector electrode of triode Q2 connects the output VDD of driving power module, and the emitter of triode Q4 is for driving described lower end switching tube.
11. high power switching power supply drive circuit as described as any one in claim 1 to 10 is characterized in that: described control module is the NCP1396 family chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203757743U CN203313045U (en) | 2013-06-26 | 2013-06-26 | Large-power switch power supply drive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203757743U CN203313045U (en) | 2013-06-26 | 2013-06-26 | Large-power switch power supply drive circuit |
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| CN203313045U true CN203313045U (en) | 2013-11-27 |
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| CN2013203757743U Expired - Lifetime CN203313045U (en) | 2013-06-26 | 2013-06-26 | Large-power switch power supply drive circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110352548A (en) * | 2017-09-15 | 2019-10-18 | 富士电机株式会社 | Power module, reverse-conducting IGBT and driving circuit |
| CN111398673A (en) * | 2020-03-20 | 2020-07-10 | 中国船舶重工集团公司第七O三研究所无锡分部 | Power prediction device for low-voltage water resistance |
-
2013
- 2013-06-26 CN CN2013203757743U patent/CN203313045U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110352548A (en) * | 2017-09-15 | 2019-10-18 | 富士电机株式会社 | Power module, reverse-conducting IGBT and driving circuit |
| CN110352548B (en) * | 2017-09-15 | 2021-03-02 | 富士电机株式会社 | Power module, reverse conduction IGBT and drive circuit |
| CN111398673A (en) * | 2020-03-20 | 2020-07-10 | 中国船舶重工集团公司第七O三研究所无锡分部 | Power prediction device for low-voltage water resistance |
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Granted publication date: 20131127 |