CN217546015U - PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor - Google Patents
PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor Download PDFInfo
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- CN217546015U CN217546015U CN202221388994.5U CN202221388994U CN217546015U CN 217546015 U CN217546015 U CN 217546015U CN 202221388994 U CN202221388994 U CN 202221388994U CN 217546015 U CN217546015 U CN 217546015U
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Abstract
The embodiment of the utility model provides a PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor, drive circuit includes: the voltage stabilizing circuit comprises an input module, a voltage stabilizing module, a switch module, a control module and an output module, wherein the input module outputs a voltage signal of a first voltage value when receiving the voltage signal; when the control module receives a first control voltage, the output end of the control module is connected with the ground, and is disconnected when receiving a second control voltage; the voltage stabilizing module stabilizes the voltage of the output end to a second voltage value when the input end of the voltage stabilizing module is conducted with the ground, and the difference value between the second voltage value and the first voltage value is smaller than or equal to a preset switch threshold value; when the difference value between the voltage value of the voltage signal received by the switch module and the voltage value of the voltage signal received by the input end of the switch module is smaller than or equal to a preset switch threshold value, outputting the received voltage signal, otherwise, disconnecting the switch module; the output module outputs the received voltage signal when receiving the voltage signal. The switching frequency of the PMOS tube can be improved.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to drive circuit, drive circuit base plate and the robot of sweeping the floor of PMOS pipe fast switch.
Background
With the development of robots and sweeping robot technologies, more and more high-power devices (such as motors, electromagnets and heating modules) need to be driven. In the power switch field, the PMOS pipe has natural advantages, and on the one hand, its lower on-resistance can the effectual situation of generating heat when reducing the heavy current and passing through, and on the other hand, compare in the complicated boost or the voltage bootstrapping circuit that the NMOS pipe drive needs, the control of PMOS pipe is simpler, can realize controlling after carrying out simple resistance partial pressure to input voltage.
The robot has a more and more refined control mode, so that a high-power device has a demand for power control, wherein a PWM (Pulse width modulation) technology is very commonly applied in the aspect of switching control. The gate of the PMOS tube is controlled by using the PWM signal, so that the on-off of the PMOS tube can be controlled, but due to junction capacitance existing between the source electrode and the gate of the PMOS tube, the frequency of the PWM signal for controlling the switch of the PMOS tube cannot be very high and is generally below 10KHZ, when the frequency for controlling the switch of the PMOS tube is too high, the problem of control failure can occur due to the effect of the junction capacitance, so that the output voltage waveform is distorted, and when the frequency for controlling the switch of the PMOS tube is too low, for example, when the frequency for controlling the switch of the PMOS tube is currently mostly within 10KHZ, a load device (such as an electromagnet) can generate noise which can be heard by human ears, so that the user experience is influenced.
Therefore, how to increase the switching frequency of the PMOS transistor becomes an important issue to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide a drive circuit, drive circuit base plate and the robot of sweeping the floor of PMOS pipe fast switch to realize improving the switching frequency of PMOS pipe. The specific technical scheme is as follows:
in a first aspect, an embodiment of the present invention provides a driving circuit of a PMOS transistor fast switch, the driving circuit includes:
the input end of the input module is connected with the input end of the driving circuit, the output end of the input module is connected with the input end of the switch module, the output end of the switch module is connected with the input end of the output module, the output end of the output module is connected with the output end of the driving circuit, the control end of the driving circuit is connected with the input end of the control module, the output end of the control module is connected with the input end of the voltage stabilizing module, and the output end of the voltage stabilizing module is connected with the control end of the switch module;
the input module is set to output a voltage signal of a first voltage value through an output end of the input module when the input end of the input module receives the voltage signal of the first voltage value;
the control module is set to be conducted with the ground when the input end of the control module receives a first control voltage; when the input end of the control module receives a second control voltage, the control module is disconnected;
the voltage stabilizing module is configured to stabilize the voltage at the output end of the voltage stabilizing module to a second voltage value when the input end of the voltage stabilizing module is conducted with the ground, wherein the difference between the second voltage value and the first voltage value is smaller than or equal to a preset switching threshold value;
the switch module is set to output the voltage signal received by the input end of the switch module through the output end of the switch module when the difference value between the voltage value of the voltage signal received by the control end of the switch module and the voltage value of the voltage signal received by the input end of the switch module is smaller than or equal to a preset switch threshold value; when the difference value between the voltage value of the voltage signal received by the self control end and the voltage value of the voltage signal received by the self input end is larger than a preset switch threshold value, the switch module is switched off;
the output module is configured to output the voltage signal received by the input terminal through the output terminal when the input terminal receives the voltage signal.
Optionally, in the driving circuit of the embodiment of the present invention, the voltage stabilizing module includes: a voltage regulator diode;
the first end of the voltage stabilizing diode is connected with the output end of the voltage stabilizing module, and the second end of the voltage stabilizing diode is connected with the input end of the voltage stabilizing module.
Optionally, in the driving circuit of the embodiment of the present invention, the switch module includes: the first resistor, the third capacitor and the PMOS tube;
the first end of the first resistor is connected with the input end of the switch module, the first end of the third capacitor and the source electrode of the PMOS tube respectively, and the second end of the first resistor is connected with the grid electrode of the PMOS tube and the second end of the third capacitor respectively;
the drain electrode of the PMOS tube is connected with the output end of the switch module, and the grid electrode of the PMOS tube is connected with the control end of the switch module.
Optionally, in the driving circuit of the embodiment of the present invention, the control module includes: the second resistor, the sixth capacitor, the third resistor and the triode;
the first end of the second resistor is connected with the input end of the control module, and the second end of the second resistor is respectively connected with the first end of the sixth capacitor, the first end of the third resistor and the base electrode of the triode;
the collector of the triode is connected with the output end of the control module;
and the second end of the sixth capacitor, the second end of the third resistor and the emitter of the triode are all grounded.
Optionally, in the driving circuit of the embodiment of the present invention, the input module includes: a first capacitor and a second capacitor;
the first end of the first capacitor is respectively connected with the first end of the second capacitor and the input end of the input module;
and the second end of the first capacitor and the second end of the second capacitor are both grounded.
Optionally, in the driving circuit of the embodiment of the present invention, the output module includes: a fourth capacitor and a fifth capacitor;
the first end of the fourth capacitor is respectively connected with the first end of the fifth capacitor and the output end of the output module;
and the second end of the fourth capacitor and the second end of the fifth capacitor are both grounded.
Optionally, in the driving circuit according to an embodiment of the present invention, the transistor is an NPN transistor.
Optionally, in the driving circuit provided by the present invention, the control terminal of the driving circuit is connected to the PWM voltage signal, and the frequency of the PWM voltage signal is not less than 20KHZ.
In a second aspect, the embodiment of the present invention provides a driving circuit substrate of a PMOS transistor fast switch, including:
the driving circuit for the PMOS transistor fast switch according to any of the first aspect.
The third aspect, the embodiment of the utility model provides a robot of sweeping floor, the robot of sweeping floor includes:
the driving circuit substrate of the PMOS transistor fast switch as described in the second aspect above.
The embodiment of the utility model provides a in PMOS pipe fast switch's drive circuit, drive circuit base plate and the robot of sweeping the floor, drive circuit includes: the input end of the input module is connected with the input end of the driving circuit, the output end of the input module is connected with the input end of the switch module, the output end of the switch module is connected with the input end of the output module, the output end of the output module is connected with the output end of the driving circuit, the control end of the driving circuit is connected with the input end of the control module, the output end of the control module is connected with the input end of the voltage stabilizing module, and the output end of the voltage stabilizing module is connected with the control end of the switch module; the input module is set to output a voltage signal of a first voltage value through an output end of the input module when the input end of the input module receives the voltage signal of the first voltage value; the control module is set to be conducted with the ground when the input end of the control module receives a first control voltage; when the input end of the control module receives a second control voltage, the control module is disconnected; the voltage stabilizing module is used for stabilizing the voltage of the output end of the voltage stabilizing module to a second voltage value when the input end of the voltage stabilizing module is conducted with the ground, wherein the difference value between the second voltage value and the first voltage value is smaller than or equal to a preset switching threshold value; the switch module is set to output the voltage signal received by the input end of the switch module through the output end of the switch module when the difference value between the voltage value of the voltage signal received by the control end of the switch module and the voltage value of the voltage signal received by the input end of the switch module is smaller than or equal to a preset switch threshold value; when the difference value between the voltage value of the voltage signal received by the self control end and the voltage value of the voltage signal received by the self input end is larger than a preset switch threshold value, the switch module is switched off; the output module is set to output the voltage signal received by the input end of the output module through the output end of the output module when the input end of the output module receives the voltage signal. Can stabilize the voltage of voltage stabilization module's output to the second voltage value through voltage stabilization module for the pressure differential of switch module's control end and input diminishes, has reduced switch module's charge-discharge time, has improved the switching frequency of PMOS pipe. Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first schematic diagram of a driving circuit of a PMOS transistor fast switch according to an embodiment of the present invention;
fig. 2 is a schematic view of a voltage stabilizing module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a switch module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control module according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an input module according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an output module according to an embodiment of the present invention;
fig. 7 is a second schematic diagram of a driving circuit of a PMOS transistor fast switch according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
In order to improve the switching frequency of the PMOS transistor, the utility model provides a drive circuit of PMOS transistor fast switch, see fig. 1, the drive circuit includes:
the input end of the input module 11 is connected with the input end of the driving circuit, the output end of the input module 11 is connected with the input end of the switch module 13, the output end of the switch module 13 is connected with the input end of the output module 15, the output end of the output module 15 is connected with the output end of the driving circuit, the control end of the driving circuit is connected with the input end of the control module 14, the output end of the control module 14 is connected with the input end of the voltage stabilizing module 12, and the output end of the voltage stabilizing module 12 is connected with the control end of the switch module 13;
the input module 11 is configured to output a voltage signal of a first voltage value through an output terminal thereof when the input terminal thereof receives the voltage signal of the first voltage value;
the control module 14 is configured to be conducted with the ground when the input end of the control module receives a first control voltage; when the input end of the control module receives a second control voltage, the control module is disconnected;
the voltage stabilizing module 12 is configured to stabilize the voltage at the output end of the voltage stabilizing module to a second voltage value when the input end of the voltage stabilizing module is conducted with the ground, wherein a difference value between the second voltage value and the first voltage value is smaller than or equal to a preset switching threshold value;
the switch module 13 is configured to output the voltage signal received by the input terminal through the output terminal when a difference between a voltage value of the voltage signal received by the control terminal and a voltage value of the voltage signal received by the input terminal is less than or equal to a preset switch threshold; when the difference value between the voltage value of the voltage signal received by the self control end and the voltage value of the voltage signal received by the self input end is larger than a preset switch threshold value, the switch module is switched off;
the output module 15 is configured to output the voltage signal received by the input terminal through the output terminal when the input terminal receives the voltage signal.
In the embodiment of the utility model, when the control module receives the first control voltage, the voltage at the output end of the voltage stabilizing module is stabilized to the second voltage value, when the difference value between the second voltage value and the first voltage value is smaller than or equal to a preset switching threshold value, the switching module outputs the voltage signal received from the input module to the output module. The purpose of improving the switching frequency of the PMOS tube is achieved.
Optionally, in the driving circuit according to the embodiment of the present invention, referring to fig. 2, the voltage stabilizing module 12 includes: a voltage regulator diode D1;
the first end of the voltage stabilizing diode D1 is connected with the output end of the voltage stabilizing module, and the second end of the voltage stabilizing diode D1 is connected with the input end of the voltage stabilizing module.
The voltage stabilizing diode D1 operates in a reverse breakdown state, and plays a role of stabilizing voltage in a circuit, stabilizing the voltage at its operating voltage Vd. The zener diode can select different operating voltages Vd according to design requirements, for example, the zener diode with the operating voltage Vd =3V and the zener diode with the operating voltage Vd = 5V.
When the input end of the voltage stabilizing module is conducted with the ground, the voltage of the output end of the voltage stabilizing module is stabilized to a second voltage value. In one example, referring to fig. 2, the anode of the zener diode D1 is conducted to ground, and the voltage of the cathode of the zener diode D1 is stabilized to the operating voltage Vd.
The embodiment of the utility model provides an in, through zener diode voltage stabilization to second magnitude of voltage, can reduce the voltage variation range of second magnitude of voltage and first magnitude of voltage.
Optionally, in the driving circuit according to the embodiment of the present invention, referring to fig. 3, the switch module 13 includes: the circuit comprises a first resistor R1, a third capacitor C3 and a PMOS (P-channel metal oxide semiconductor) tube Q1;
a first end of the first resistor R1 is connected to the input end of the switch module, a first end of the third capacitor C3, and the source of the PMOS transistor Q1, respectively, and a second end of the first resistor R1 is connected to the gate of the PMOS transistor Q1 and a second end of the third capacitor C3, respectively;
the drain electrode of the PMOS tube Q1 is connected with the output end of the switch module, and the grid electrode of the PMOS tube Q1 is connected with the control end of the switch module.
The PMOS tube Q1 controls the conduction or the cut-off of the PMOS tube through gate-source voltage (voltage difference between a gate and a source) Vgs. The first resistor R1 is a current limiting resistor.
Alternatively, in the driving circuit according to the embodiment of the present invention, referring to fig. 4, the control module 14 includes: the circuit comprises a second resistor R2, a sixth capacitor C6, a third resistor R3 and a triode Q2;
a first end of the second resistor R2 is connected to an input end of the control module, and a second end of the second resistor R2 is connected to a first end of the sixth capacitor C6, a first end of the third resistor R3, and a base of the triode Q2, respectively;
the collector of the triode Q2 is connected with the output end of the control module;
the second end of the sixth capacitor C6, the second end of the third resistor R3, and the emitter of the triode Q2 are all grounded.
Optionally, in the driving circuit according to the embodiment of the present invention, referring to fig. 5, the input module 11 includes: a first capacitor C1 and a second capacitor C2;
the first end of the first capacitor C1 is connected with the first end of the second capacitor C2 and the input end of the input module respectively;
the second end of the first capacitor C1 and the second end of the second capacitor C2 are both grounded.
The input end of the input module is connected with the output end of the input module.
Optionally, in the driving circuit according to the embodiment of the present invention, referring to fig. 6, the output module 15 includes: a fourth capacitor C4 and a fifth capacitor C5;
a first end of the fourth capacitor C4 is connected to a first end of the fifth capacitor C5 and an output end of the output module, respectively;
a second end of the fourth capacitor C4 and a second end of the fifth capacitor C5 are both grounded.
The input end of the output module is connected with the output end of the output module.
The preset switch threshold is a gate-source voltage (voltage difference between a gate and a source) Vgs which can be conducted by the PMOS transistor Q1, in a normal case, the gate-source voltage Vgs of the high-power PMOS transistor is below-2V, and in practical application, when a difference between the second voltage value Vd and the first voltage value Vin is-5V, conduction of the PMOS transistor Q1 can be ensured, and meanwhile, the capability of fast conduction of the PMOS transistor Q1 can also be ensured.
By controlling the difference value between the second voltage value Vd and the first voltage value Vin to be about-5V, the voltage change amplitude of the PMOS tube Q1 in the on or off state can be effectively reduced, and the switching frequency of the PMOS tube is improved.
Optionally, in the driving circuit according to an embodiment of the present invention, the transistor is an NPN transistor.
The control module inputs a PWM voltage signal, the first control voltage is a high level in the PWM voltage signal, the second control voltage is a low level in the PWM voltage signal, and the PWM voltage signal is used for controlling the on-off of the NPN type triode.
The transistor Q2 is an NPN-type transistor, and is used in the control module to perform signal inversion on the input PWM voltage signal and enhance the driving capability of the output signal.
Optionally, in the utility model discloses in the drive circuit, drive circuit's control end inserts PWM voltage signal, PWM voltage signal's frequency is not less than 20KHZ.
The embodiment of the utility model provides an in, PWM voltage signal's frequency is not less than 20KHZ, can effectively avoid the hearing scope of people's ear 20HZ-20KHZ, exceeds the hearing upper limit of people's ear to avoid the machine to produce the abnormal sound, optimize user experience. Simultaneously the utility model discloses a drive circuit is simple stable, low cost.
In one example, referring to fig. 7, a voltage signal Vin with a first voltage value is input to an input terminal of the driving circuit, a voltage signal Vout is output from an output terminal of the driving circuit, and a PWM voltage signal is input to a control terminal of the driving circuit. In practical application, vin is generally larger than 10V for driving a high-power device, vout is used for driving the high-power device (such as an electromagnet), and the PMOS transistor Q1 is a high-power PMOS transistor and is used for controlling on/off of Vout in a driving circuit.
Referring to fig. 7, the working process of the driving circuit according to the embodiment of the present invention is: the control module inputs a PWM voltage signal, when the first control voltage is at a high level, Q1 is conducted, the second end of D1 is conducted with the ground, D1 works, the voltage of the first end of D1 is stabilized to a second voltage value Vd, when the difference value between the second voltage value Vd and the first voltage value Vin is smaller than a preset switch threshold value, C3 is charged, Q2 is conducted, and Vin is output to Vout. When the first control voltage is low, Q1 is turned off, D1 does not operate, C3 discharges (discharges from Vin to Vd), Q2 is turned off, and Vout does not output.
Referring to fig. 7, the utility model discloses drive circuit utilizes zener diode's steady voltage characteristic and zener diode's hookup location in drive circuit for PMOS pipe Q1 is when fast switch, and grid source voltage Vgs's pressure differential variation amplitude reduces, has reduced PMOS pipe Q1 knot electric capacity and current-limiting resistor R1's charge-discharge amplitude, thereby has reduced the charge-discharge time, has improved the switching frequency of PMOS pipe. Meanwhile, the gate-source voltage Vgs is reduced through the voltage stabilizing diode D1, so that the selectable power range of the current limiting resistor R1 is enlarged, a smaller resistance value and a smaller power value can be selected, the charging and discharging time of the gate-source voltage Vgs of the PMOS tube Q1 can be further shortened, and the switching frequency is improved. The current limiting resistor R1 can select smaller resistance value and power value, which is beneficial to selecting small-package resistor and miniaturized design.
The embodiment of the utility model provides an in, through zener diode's position and operating voltage's selection, switching frequency that can effectual improvement PMOS pipe when switching frequency reaches more than 20KHZ, surpasses the hearing upper limit of people's ear to avoid the machine to produce the abnormal sound, optimize user experience. And simultaneously the utility model discloses a drive circuit has reduced the pressure differential variation range of grid source voltage Vgs through adding zener diode, compares with the drive circuit of the complicated PMOS pipe fast switch among the correlation technique, and circuit topology is simpler, stable performance, cost are cheaper.
The utility model provides a PMOS manages drive circuit base plate of fast switch, include: the drive circuit of any one of the PMOS tube fast switches.
The utility model provides a robot of sweeping floor, include: the drive circuit substrate of the PMOS tube fast switch.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A drive circuit of a PMOS pipe fast switch is characterized by comprising:
the input end of the input module is connected with the input end of the driving circuit, the output end of the input module is connected with the input end of the switch module, the output end of the switch module is connected with the input end of the output module, the output end of the output module is connected with the output end of the driving circuit, the control end of the driving circuit is connected with the input end of the control module, the output end of the control module is connected with the input end of the voltage stabilizing module, and the output end of the voltage stabilizing module is connected with the control end of the switch module;
the input module is set to output a voltage signal of a first voltage value through an output end of the input module when the input end of the input module receives the voltage signal of the first voltage value;
the control module is set to be conducted with the ground when the input end of the control module receives a first control voltage; when the input end of the control module receives a second control voltage, the control module is disconnected;
the voltage stabilizing module is used for stabilizing the voltage of the output end of the voltage stabilizing module to a second voltage value when the input end of the voltage stabilizing module is conducted with the ground, wherein the difference value between the second voltage value and the first voltage value is smaller than or equal to a preset switching threshold value;
the switch module is set to output the voltage signal received by the input end of the switch module through the output end of the switch module when the difference value between the voltage value of the voltage signal received by the control end of the switch module and the voltage value of the voltage signal received by the input end of the switch module is smaller than or equal to a preset switch threshold value; when the difference value between the voltage value of the voltage signal received by the self control end and the voltage value of the voltage signal received by the self input end is larger than a preset switch threshold value, the switch module is switched off;
the output module is set to output the voltage signal received by the input end of the output module through the output end of the output module when the input end of the output module receives the voltage signal.
2. The driving circuit of claim 1, wherein the voltage regulation module comprises: a voltage regulator diode;
the first end of the voltage stabilizing diode is connected with the output end of the voltage stabilizing module, and the second end of the voltage stabilizing diode is connected with the input end of the voltage stabilizing module.
3. The driving circuit according to claim 1, wherein the switching module comprises: the first resistor, the third capacitor and the PMOS tube;
the first end of the first resistor is connected with the input end of the switch module, the first end of the third capacitor and the source electrode of the PMOS tube respectively, and the second end of the first resistor is connected with the grid electrode of the PMOS tube and the second end of the third capacitor respectively;
the drain electrode of the PMOS tube is connected with the output end of the switch module, and the grid electrode of the PMOS tube is connected with the control end of the switch module.
4. The drive circuit of claim 1, wherein the control module comprises: the second resistor, the sixth capacitor, the third resistor and the triode;
the first end of the second resistor is connected with the input end of the control module, and the second end of the second resistor is respectively connected with the first end of the sixth capacitor, the first end of the third resistor and the base electrode of the triode;
the collector of the triode is connected with the output end of the control module;
and the second end of the sixth capacitor, the second end of the third resistor and the emitter of the triode are all grounded.
5. The driving circuit of claim 1, wherein the input module comprises: a first capacitor and a second capacitor;
the first end of the first capacitor is respectively connected with the first end of the second capacitor and the input end of the input module;
and the second end of the first capacitor and the second end of the second capacitor are both grounded.
6. The driving circuit according to claim 1, wherein the output module comprises: a fourth capacitor and a fifth capacitor;
the first end of the fourth capacitor is connected with the first end of the fifth capacitor and the output end of the output module respectively;
and the second end of the fourth capacitor and the second end of the fifth capacitor are both grounded.
7. The driving circuit according to claim 4, wherein the transistor is an NPN transistor.
8. The driving circuit according to claim 1, wherein a control terminal of the driving circuit is connected to a PWM voltage signal, and a frequency of the PWM voltage signal is not less than 20KHZ.
9. The utility model provides a drive circuit base plate of PMOS pipe fast switch which characterized in that includes:
the driving circuit of the fast switch of PMOS transistor as claimed in one of claims 1 to 8.
10. A sweeping robot, comprising:
the substrate of claim 9 for a fast switch of a PMOS transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221388994.5U CN217546015U (en) | 2022-06-06 | 2022-06-06 | PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221388994.5U CN217546015U (en) | 2022-06-06 | 2022-06-06 | PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor |
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| Publication Number | Publication Date |
|---|---|
| CN217546015U true CN217546015U (en) | 2022-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221388994.5U Active CN217546015U (en) | 2022-06-06 | 2022-06-06 | PMOS pipe fast switch's drive circuit, drive circuit base plate and robot of sweeping floor |
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| CN (1) | CN217546015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799001A (en) * | 2022-11-09 | 2023-03-14 | 东方博沃（北京）科技有限公司 | Relay driving device |
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2022
- 2022-06-06 CN CN202221388994.5U patent/CN217546015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115799001A (en) * | 2022-11-09 | 2023-03-14 | 东方博沃（北京）科技有限公司 | Relay driving device |
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