CN220173099U - Switch tube driving circuit - Google Patents
Switch tube driving circuit Download PDFInfo
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- CN220173099U CN220173099U CN202321124022.XU CN202321124022U CN220173099U CN 220173099 U CN220173099 U CN 220173099U CN 202321124022 U CN202321124022 U CN 202321124022U CN 220173099 U CN220173099 U CN 220173099U
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- module
- resistor
- push
- triode
- optocoupler
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- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims description 23
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims 1
- 230000003321 amplification Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 229920006395 saturated elastomer Polymers 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a switching tube driving circuit, which relates to the field of driving circuits, and comprises an optocoupler control module, a push-pull amplifying module and a switching tube driving circuit, wherein the optocoupler control module is used for controlling the on or off of an optocoupler and outputting different control signals to the push-pull amplifying module; the push-pull amplifying module is used for controlling the switch module to be turned on or turned off through the transmission module according to different control signals of the optocoupler control module; the transmission module is used for transmitting the voltage signal of the push-pull amplifying module to the switch module; the switch module is used for controlling whether the voltage is supplied to the lower-level circuit or not; the push-pull amplifying module comprises a triode Q1, a triode Q2 and a triode Q4, the optocoupler control module is connected with the push-pull amplifying module, the push-pull amplifying module is connected with the transmission module, and the transmission module is connected with the switch module; compared with the prior art, the utility model has the beneficial effects that: according to the utility model, under the deep saturated switching state, the current amplification state can not be followed for a long time, so that the energy conservation, the loss reduction and the circuit stability improvement are realized.
Description
Technical Field
The utility model relates to the field of driving circuits, in particular to a switching tube driving circuit.
Background
The conventional similar circuit is a general push-pull driving circuit, as shown in fig. 1, by controlling whether an optocoupler works or not, the conduction states of the triodes Q2 and Q4 are controlled, so that the field effect transistor Q3 (other types of switching transistors can also be used) is driven to be turned on or off, and the control of the field effect transistor Q3 as a switch is completed.
The tube driving speed and saturation of the existing push-pull driving circuit are not ideal, the heating loss is large, and improvement is needed.
Disclosure of Invention
The present utility model is directed to a switching tube driving circuit, which solves the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a switching tube driving circuit comprising:
the optical coupler control module is used for controlling the optical coupler to be conducted or not and outputting different control signals to the push-pull amplifying module;
the push-pull amplifying module is used for controlling the switch module to be turned on or turned off through the transmission module according to different control signals of the optocoupler control module;
the transmission module is used for transmitting the voltage signal of the push-pull amplifying module to the switch module;
the switch module is used for controlling whether the voltage is supplied to the lower-level circuit or not;
the optical coupler control module is connected with the push-pull amplifying module, the push-pull amplifying module is connected with the transmission module, and the transmission module is connected with the switch module;
the push-pull amplifying module comprises a resistor R6, a resistor R7, a resistor R8, a resistor R10, a resistor R12, a resistor R13, a capacitor C9, a capacitor C10, a triode Q1, a triode Q2 and a triode Q4, wherein an emitter of the triode Q1 is connected with 15V voltage, one end of the resistor R6, one end of the capacitor C9 and one end of the capacitor C10, a collector of the triode Q1 is connected with the emitter of the triode Q4, one end of the resistor R12 and a transmission module, a collector of the triode Q4 is connected with a lower circuit, a base of the triode Q1 is connected with the other end of the resistor R6, one end of the resistor R7, the other end of the resistor R7 is connected with a collector of the triode Q2, the emitter of the triode Q2 is connected with the lower circuit, the other end of the capacitor C9 is connected with the lower circuit, the other end of the capacitor C10 is connected with the other end of the resistor R12 and one end of the resistor R13, one end of the resistor R8 is connected with the optical coupler control module, and the other end of the resistor R8 is connected with one end of the base of the triode Q2 and the other end of the resistor R10 is connected with the lower circuit.
As still further aspects of the utility model: the optical coupler control module comprises an optical coupler U1 and a resistor R9, one end of the input end of the optical coupler U1 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with a control signal, the other end of the input end of the optical coupler U1 is grounded, the first end of the output end of the optical coupler U1 is connected with 15V voltage, the second end of the output end of the optical coupler U1 is connected with the push-pull amplifying module, and the third end of the output end of the optical coupler U1 is connected with a lower circuit.
As still further aspects of the utility model: the transfer module comprises a diode D4, a resistor R11 and a resistor R14, wherein the cathode of the diode D4 is connected with one end of the resistor R11 and the push-pull amplifying module, the anode of the diode D4 is connected with the other end of the resistor R11, the switch module and one end of the resistor R14, and the other end of the resistor R14 is connected with the lower-level circuit.
As still further aspects of the utility model: the switching module comprises an inductor L2 and a switching tube Q3, wherein a first end of the switching tube Q3 is connected with one end of the inductor L2, the other end of the inductor L2 is connected with a power supply voltage VCC, a second end of the switching tube Q2 is connected with the transmission module, and a third end of the switching tube Q3 is connected with a lower-level circuit.
As still further aspects of the utility model: the model of optocoupler U1 is TLP700A.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, under the deep saturated switching state, the current amplification state can not be followed for a long time, so that the energy conservation, the loss reduction and the circuit stability improvement are realized.
Drawings
Fig. 1 is a circuit diagram of a conventional push-pull driving circuit.
Fig. 2 is a circuit diagram of a switching tube driving circuit.
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. 2, a switching tube driving circuit includes:
the optical coupler control module is used for controlling the optical coupler to be conducted or not and outputting different control signals to the push-pull amplifying module;
the push-pull amplifying module is used for controlling the switch module to be turned on or turned off through the transmission module according to different control signals of the optocoupler control module;
the transmission module is used for transmitting the voltage signal of the push-pull amplifying module to the switch module;
the switch module is used for controlling whether the voltage is supplied to the lower-level circuit or not;
the optical coupler control module is connected with the push-pull amplifying module, the push-pull amplifying module is connected with the transmission module, and the transmission module is connected with the switch module;
the push-pull amplifying module comprises a resistor R6, a resistor R7, a resistor R8, a resistor R10, a resistor R12, a resistor R13, a capacitor C9, a capacitor C10, a triode Q1, a triode Q2 and a triode Q4, wherein an emitter of the triode Q1 is connected with 15V voltage, one end of the resistor R6, one end of the capacitor C9 and one end of the capacitor C10, a collector of the triode Q1 is connected with the emitter of the triode Q4, one end of the resistor R12 and a transmission module, a collector of the triode Q4 is connected with a lower circuit, a base of the triode Q1 is connected with the other end of the resistor R6, one end of the resistor R7, the other end of the resistor R7 is connected with a collector of the triode Q2, the emitter of the triode Q2 is connected with the lower circuit, the other end of the capacitor C9 is connected with the lower circuit, the other end of the capacitor C10 is connected with the other end of the resistor R12 and one end of the resistor R13, one end of the resistor R8 is connected with the optical coupler control module, and the other end of the resistor R8 is connected with one end of the base of the triode Q2 and the other end of the resistor R10 is connected with the lower circuit.
In particular embodiments: referring to fig. 2, the circuit is in a working stop state at the moment of circuit power-on, when the optocoupler control module outputs a high-level pulse, the base potential of the triode Q2 (NPN tube) rises to make the triode Q2 fully conduct, the base of the PNP triode Q1 is lower than the emitter potential and is conducted by the conduction of the triode Q2, and a high-current high-level is output to the switching tube Q3 through the transmission module and is conducted by the switching tube Q3, so that the conducting rising edge of the switching tube Q3 is steeper, and the turn-on loss and heat of the switching tube Q3 are reduced. At this time, the switching transistor Q3 has rapidly reached an on state, and the base of the transistor Q4 (PNP transistor) is at a high level, and is at an off state. When the optocoupler control module outputs a low-level pulse, the base potential of the triode Q2 (NPN tube) is 0, so that the triode Q2 is completely cut off, and the base of the PNP triode Q1 is higher than the emitter potential and is cut off by the cut-off of the triode Q2. The base electrode of the triode Q4 (PNP tube) is low-voltage and is in a conducting state after the triode Q1 is cut off, the discharge of the switching tube Q3 is accelerated, the turn-off time of the switching tube Q3 is shorter, and the turn-off loss is reduced. After the switching tube Q3 is turned off, the whole circuit stops working and waits for the next trigger.
In this embodiment: referring to fig. 2, the optocoupler control module includes an optocoupler U1 and a resistor R9, wherein one end of an input end of the optocoupler U1 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with a control signal, the other end of the input end of the optocoupler U1 is grounded, a first end of an output end of the optocoupler U1 is connected with 15V voltage, a second end of an output end of the optocoupler U1 is connected with the push-pull amplifying module, and a third end of an output end of the optocoupler U1 is connected with a lower circuit.
The control signal is input or not, so that whether the light emitting diode in the optical coupler U1 works or not is further controlled, and the output level of the output end is further controlled.
In this embodiment: referring to fig. 2, the transfer module includes a diode D4, a resistor R11, and a resistor R14, wherein a cathode of the diode D4 is connected to one end of the resistor R11, and the push-pull amplifying module, an anode of the diode D4 is connected to the other end of the resistor R11, the switch module, and one end of the resistor R14, and the other end of the resistor R14 is connected to a lower circuit.
And outputting the output voltage signal of the push-pull amplifying module to the switch module.
In this embodiment: referring to fig. 2, the switching module includes an inductor L2 and a switching tube Q3, a first end of the switching tube Q3 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to a supply voltage VCC, a second end of the switching tube Q2 is connected to the transfer module, and a third end of the switching tube Q3 is connected to a lower circuit.
The switching tube Q3 shown in FIG. 2 is a field effect tube, and the utility model is applicable to switching tubes such as a field effect tube, an IGBT tube, a MOS tube and the like; after the switching tube Q3 is conducted, the voltage VCC supplies power to the lower-stage circuit after passing through the inductor L2 and the switching tube Q3.
In this embodiment: referring to fig. 2, the optical coupler U1 is of a type TLP700A.
The working principle of the utility model is as follows: the optical coupler control module controls whether the optical coupler is conducted or not and outputs different control signals to the push-pull amplifying module; the push-pull amplifying module controls the switch module to be opened or closed through the transmission module according to different control signals of the optocoupler control module; the transmission module transmits the voltage signal of the push-pull amplifying module to the switch module; the switch module controls whether the voltage is supplied to the lower-stage circuit.
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 switching tube driving circuit comprising:
the optical coupler control module is used for controlling the optical coupler to be conducted or not and outputting different control signals to the push-pull amplifying module;
the push-pull amplifying module is used for controlling the switch module to be turned on or turned off through the transmission module according to different control signals of the optocoupler control module;
the transmission module is used for transmitting the voltage signal of the push-pull amplifying module to the switch module;
the switch module is used for controlling whether the voltage is supplied to the lower-level circuit or not;
the optical coupler control module is connected with the push-pull amplifying module, the push-pull amplifying module is connected with the transmission module, and the transmission module is connected with the switch module;
the method is characterized in that: the push-pull amplifying module comprises a resistor R6, a resistor R7, a resistor R8, a resistor R10, a resistor R12, a resistor R13, a capacitor C9, a capacitor C10, a triode Q1, a triode Q2 and a triode Q4, wherein an emitter of the triode Q1 is connected with 15V voltage, one end of the resistor R6, one end of the capacitor C9 and one end of the capacitor C10, a collector of the triode Q1 is connected with the emitter of the triode Q4, one end of the resistor R12 and a transmission module, a collector of the triode Q4 is connected with a lower circuit, a base of the triode Q1 is connected with the other end of the resistor R6, one end of the resistor R7, the other end of the resistor R7 is connected with a collector of the triode Q2, the emitter of the triode Q2 is connected with the lower circuit, the other end of the capacitor C9 is connected with the lower circuit, the other end of the capacitor C10 is connected with the other end of the resistor R12 and one end of the resistor R13, one end of the resistor R8 is connected with the optical coupler control module, and the other end of the resistor R8 is connected with one end of the base of the triode Q2 and the other end of the resistor R10 is connected with the lower circuit.
2. The switching tube driving circuit according to claim 1, wherein the optocoupler control module comprises an optocoupler U1 and a resistor R9, one end of an input end of the optocoupler U1 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with a control signal, the other end of the input end of the optocoupler U1 is grounded, a first end of an output end of the optocoupler U1 is connected with 15V voltage, a second end of the output end of the optocoupler U1 is connected with the push-pull amplifying module, and a third end of the output end of the optocoupler U1 is connected with a lower circuit.
3. The switching tube driving circuit according to claim 1, wherein the transfer module comprises a diode D4, a resistor R11 and a resistor R14, wherein a cathode of the diode D4 is connected with one end of the resistor R11, the push-pull amplifying module, an anode of the diode D4 is connected with the other end of the resistor R11, the switching module and one end of the resistor R14, and the other end of the resistor R14 is connected with the lower circuit.
4. The switching tube driving circuit according to claim 1, wherein the switching module comprises an inductor L2 and a switching tube Q3, a first end of the switching tube Q3 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to a supply voltage VCC, a second end of the switching tube Q2 is connected to the transfer module, and a third end of the switching tube Q3 is connected to a lower circuit.
5. The switching tube driving circuit according to claim 2, wherein the optocoupler U1 is of a type TLP700A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124022.XU CN220173099U (en) | 2023-05-11 | 2023-05-11 | Switch tube driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321124022.XU CN220173099U (en) | 2023-05-11 | 2023-05-11 | Switch tube driving circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220173099U true CN220173099U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321124022.XU Active CN220173099U (en) | 2023-05-11 | 2023-05-11 | Switch tube driving circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220173099U (en) |
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2023
- 2023-05-11 CN CN202321124022.XU patent/CN220173099U/en active Active
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