CN220291870U - Driving circuit with strong driving capability and quick switch - Google Patents
Driving circuit with strong driving capability and quick switch Download PDFInfo
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- CN220291870U CN220291870U CN202321822733.4U CN202321822733U CN220291870U CN 220291870 U CN220291870 U CN 220291870U CN 202321822733 U CN202321822733 U CN 202321822733U CN 220291870 U CN220291870 U CN 220291870U
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- 239000003990 capacitor Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model discloses a driving circuit with strong driving capability and quick switch, which relates to the driving field, and comprises: the driving chip module is used for selecting whether the output voltage drives the external 14V push-pull module; the external 14V push-pull module is used for providing 14V voltage for the quick opening and closing module when receiving the input voltage of the driving chip module; compared with the prior art, the utility model has the beneficial effects that: the utility model can realize quick synchronous opening and quick synchronous closing, the external push-pull circuit increases the driving capability of the driving chip and increases the circuit for quick disconnection of the PNP tube, thereby reducing switching loss and heating and improving the product performance; the field effect transistors with different numbers can be matched according to the power requirement of the circuit, different driving chips can be matched according to the power requirement of the circuit, the switching loss can be adjusted by adjusting the serially connected resistors, the heating is reduced, and the product performance is improved.
Description
Technical Field
The utility model relates to the field of driving, in particular to a driving circuit with strong driving capability and fast switching.
Background
With the development of semiconductor field effect transistors (MOSFETs), the larger the power circuit of a power supply product is, the voltage and current are increased or multiplied, the more field effect transistors (MOSFETs) are used, and the faster the switching frequency of the field effect transistors (MOSFETs) is.
The chip and the resistor are adopted to directly drive a plurality of field effect transistors (MOSFET), the driving effect is not ideal, the switching loss and the heating are difficult to control, and the improvement is needed.
Disclosure of Invention
The utility model aims to provide a driving circuit with strong driving capability and fast switching so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a drive circuit of a high-drive-ability, fast-switching, comprising:
the driving chip module is used for selecting whether the output voltage drives the external 14V push-pull module;
the external 14V push-pull module is used for providing 14V voltage for the quick opening and closing module when receiving the input voltage of the driving chip module; when the input voltage of the driving chip module is not received, 0V voltage is provided for the quick opening and closing module;
the fast opening and closing module is used for driving the field effect transistor module when receiving the voltage of 14V; when 0V voltage is received, driving the field effect transistor module;
the field effect transistor module is used for constructing a circuit path when being conducted;
the driving chip module is connected with the external 14V push-pull module, the external 14V push-pull module is connected with the quick opening and closing module, and the quick opening and closing module is connected with the field effect tube module.
As still further aspects of the utility model: the driving chip module comprises a driving chip U14, the model number of the driving chip U4 is ICE3PCS03G, a No. 7 pin of the driving chip U14 is connected with 14V voltage, a No. 8 pin of the driving chip U14 is connected with one end of a resistor R38, and the other end of the resistor R38 is connected with an external 14V push-pull module.
As still further aspects of the utility model: the external 14V push-pull module comprises a capacitor C27, a triode Q11 and a triode Q12, wherein a collector electrode of the triode Q11 is connected with 14V voltage, one end of the capacitor C27, the other end of the capacitor C27 is grounded, an emitter electrode of the triode Q11 is connected with an emitter electrode of the triode Q12, the quick opening and closing module is connected with a collector electrode of the triode Q12, and a base electrode of the triode Q11 is connected with a base electrode of the triode Q12 and the quick opening and closing module.
As still further aspects of the utility model: the fast opening and closing module comprises at least one fast opening and closing circuit, the fast opening and closing circuit comprises a resistor R7, a diode D17, a triode Q15 and a resistor R47, one end of the resistor R7 is connected with the external 14V push-pull module, the other end of the resistor R7 is connected with a base electrode of the triode Q15 and an anode of the diode D17, a collector electrode of the triode Q15 is grounded, an emitter electrode of the triode Q15 is connected with a cathode of the diode D17, one end of the resistor R47 and the field effect transistor module, and the other end of the resistor R47 is grounded.
As still further aspects of the utility model: the field effect tube module comprises at least one field effect tube, the number of the field effect tubes corresponds to that of the quick opening and closing circuits, the D poles of the field effect tubes are connected with the upper circuit, the S poles of the field effect tubes are grounded, and the G poles of the field effect tubes are connected with the quick opening and closing circuits.
Compared with the prior art, the utility model has the beneficial effects that: the utility model can realize quick synchronous opening and quick synchronous closing, the external push-pull circuit increases the driving capability of the driving chip and increases the circuit for quick disconnection of the PNP tube, thereby reducing switching loss and heating and improving the product performance; different numbers of field effect transistors (MOSFET) can be matched according to circuit power requirements, different driving chips can be matched according to the circuit requirements, switching loss can be adjusted by adjusting resistors connected in series, heating is reduced, and product performance is improved.
Drawings
Fig. 1 is a schematic diagram of a driving circuit with high driving capability and fast switching.
Fig. 2 is a circuit diagram of a driving circuit with strong driving capability and fast switching.
Description of the embodiments
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a driving circuit with strong driving capability and fast switching includes:
the driving chip module is used for selecting whether the output voltage drives the external 14V push-pull module;
the external 14V push-pull module is used for providing 14V voltage for the quick opening and closing module when receiving the input voltage of the driving chip module; when the input voltage of the driving chip module is not received, 0V voltage is provided for the quick opening and closing module;
the fast opening and closing module is used for driving the field effect transistor module when receiving the voltage of 14V; when 0V voltage is received, driving the field effect transistor module;
the field effect transistor module is used for constructing a circuit path when being conducted;
the driving chip module is connected with the external 14V push-pull module, the external 14V push-pull module is connected with the quick opening and closing module, and the quick opening and closing module is connected with the field effect tube module.
In this embodiment: referring to fig. 2, the driving chip module includes a driving chip U14, the model number U4 of the driving chip is ICE3PCS03G, pin No. 7 of the driving chip U14 is connected to a voltage of 14V, pin No. 8 of the driving chip U14 is connected to one end of a resistor R38, and the other end of the resistor R38 is connected to an external 14V push-pull module.
The pin 8 of the driving chip U14 outputs a high level or a low level to select whether the output voltage is the output voltage of the external 14V push-pull module, the specific example driving chip type is only an example, and driving chips of other types can be selected in practice.
In this embodiment: referring to fig. 2, the external 14V push-pull module includes a capacitor C27, a triode Q11, and a triode Q12, wherein a collector of the triode Q11 is connected to the 14V voltage, one end of the capacitor C27, the other end of the capacitor C27 is grounded, an emitter of the triode Q11 is connected to an emitter of the triode Q12, and the fast opening and closing module, a collector of the triode Q12 is grounded, and a base of the triode Q11 is connected to a base of the triode Q12, and the fast opening and closing module.
When the driving chip U14 outputs a high level, the triode Q11 (NPN) is turned on, the triode Q12 (PNP) is turned off, and 14V voltage is provided for the quick opening and closing module after the triode Q11 is turned on; when the driving chip U14 outputs a low level, the triode Q11 (NPN) is cut off, the triode Q12 (PNP) is conducted, and the triode Q12 provides a grounding point 0V voltage for the quick opening and closing module after being conducted.
In this embodiment: referring to fig. 2, the fast switch-on/off module includes at least one fast switch-on/off circuit, the fast switch-on/off circuit includes a resistor R7, a diode D17, a transistor Q15, and a resistor R47, one end of the resistor R7 is connected to the external 14V push-pull module, the other end of the resistor R7 is connected to a base of the transistor Q15 and an anode of the diode D17, a collector of the transistor Q15 is grounded, an emitter of the transistor Q15 is connected to a cathode of the diode D17, one end of the resistor R47, and the other end of the resistor R47 is grounded.
In this embodiment: referring to fig. 2, the fet module includes at least one fet, the number of fets corresponds to the number of fast turn-on/turn-off circuits, the D-pole of the fet is connected to the upper circuit, the S-pole of the fet is grounded, and the G-pole of the fet is connected to the fast turn-on/turn-off circuit.
In fig. 2, three fast switching circuits and three field effect transistors are specifically provided, when the external 14V push-pull module outputs 14V voltage, a voltage difference is generated between the G pole and the S pole of the field effect transistor Q7, and the field effect transistor Q7 is fast turned on; when the external 14V push-pull module outputs 0V voltage, a triode Q15 (PNP) is quickly conducted, the G electrode of the field effect transistor Q7 is grounded through the triode Q15, the voltage at the G electrode of the field effect transistor Q7 is quickly discharged, the field effect transistor Q7 is quickly closed and quickly opened and quickly closed, switching loss and heating are reduced, driving capability is improved, a plurality of field effect transistors (MOSFET) can be simultaneously driven, and the high-power circuit can be applied to a high-power circuit; when the field effect tube Q7 is conducted, the upper circuit is grounded through the field effect tube Q7 to form a passage, so that the electric work is obtained, and when the field effect tube Q7 is cut off, the upper circuit is disconnected to stop the work.
The working principle of the utility model is as follows: the driving chip module is used for selecting whether the output voltage drives the external 14V push-pull module; the external 14V push-pull module is used for providing 14V voltage for the quick opening and closing module when receiving the input voltage of the driving chip module; when the input voltage of the driving chip module is not received, 0V voltage is provided for the quick opening and closing module; the fast opening and closing module is used for driving the field effect transistor module when receiving the voltage of 14V; when 0V voltage is received, driving the field effect transistor module; the field effect transistor module is used for constructing a circuit path when being conducted.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. A drive circuit with strong driving capability and fast switch is characterized in that:
the driving circuit with strong driving capability and fast switching comprises:
the driving chip module is used for selecting whether the output voltage drives the external 14V push-pull module;
the external 14V push-pull module is used for providing 14V voltage for the quick opening and closing module when receiving the input voltage of the driving chip module; when the input voltage of the driving chip module is not received, 0V voltage is provided for the quick opening and closing module;
the fast opening and closing module is used for driving the field effect transistor module when receiving the voltage of 14V; when 0V voltage is received, driving the field effect transistor module;
the field effect transistor module is used for constructing a circuit path when being conducted;
the driving chip module is connected with the external 14V push-pull module, the external 14V push-pull module is connected with the quick opening and closing module, and the quick opening and closing module is connected with the field effect tube module.
2. The driving circuit with strong driving capability and fast switch as claimed in claim 1, wherein the driving chip module comprises a driving chip U14, the model number U4 of the driving chip is ICE3PCS03G, pin 7 of the driving chip U14 is connected to a voltage of 14V, pin 8 of the driving chip U14 is connected to one end of a resistor R38, and the other end of the resistor R38 is connected to an external 14V push-pull module.
3. The driving circuit with strong driving capability and fast switch as claimed in claim 1, wherein the external 14V push-pull module comprises a capacitor C27, a triode Q11 and a triode Q12, wherein a collector of the triode Q11 is connected with 14V voltage, one end of the capacitor C27, the other end of the capacitor C27 is grounded, an emitter of the triode Q11 is connected with an emitter of the triode Q12, the fast switch is turned off, a collector of the triode Q12 is grounded, and a base of the triode Q11 is connected with a base of the triode Q12, the fast switch is turned off.
4. The driving circuit with strong driving capability and fast switch as claimed in claim 1, wherein the fast switch-off and fast-on module comprises at least one fast switch-off and fast-on circuit, the fast switch-off and fast-on circuit comprises a resistor R7, a diode D17, a triode Q15 and a resistor R47, one end of the resistor R7 is connected with the external 14V push-pull module, the other end of the resistor R7 is connected with a base electrode of the triode Q15 and an anode electrode of the diode D17, a collector electrode of the triode Q15 is grounded, an emitter electrode of the triode Q15 is connected with a cathode electrode of the diode D17, one end of the resistor R47 and the field effect transistor module, and the other end of the resistor R47 is grounded.
5. The driving circuit with strong driving capability and fast switch as claimed in claim 4, wherein the field effect transistor module comprises at least one field effect transistor, the number of the field effect transistors corresponds to the number of the fast switch-on and switch-off circuits, the D pole of the field effect transistor is connected with the upper circuit, the S pole of the field effect transistor is grounded, and the G pole of the field effect transistor is connected with the fast switch-on and switch-off circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822733.4U CN220291870U (en) | 2023-07-12 | 2023-07-12 | Driving circuit with strong driving capability and quick switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822733.4U CN220291870U (en) | 2023-07-12 | 2023-07-12 | Driving circuit with strong driving capability and quick switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220291870U true CN220291870U (en) | 2024-01-02 |
Family
ID=89325377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321822733.4U Active CN220291870U (en) | 2023-07-12 | 2023-07-12 | Driving circuit with strong driving capability and quick switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220291870U (en) |
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2023
- 2023-07-12 CN CN202321822733.4U patent/CN220291870U/en active Active
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