CN220586262U - Driving switch circuit and integrated driving switch system - Google Patents
Driving switch circuit and integrated driving switch system Download PDFInfo
- Publication number
- CN220586262U CN220586262U CN202322317869.6U CN202322317869U CN220586262U CN 220586262 U CN220586262 U CN 220586262U CN 202322317869 U CN202322317869 U CN 202322317869U CN 220586262 U CN220586262 U CN 220586262U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistor
- driving
- capacitor
- switching device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 67
- 230000000087 stabilizing effect Effects 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
Abstract
The application relates to the technical field of electronic circuits and discloses a driving switch circuit and an integrated driving switch system, wherein the driving switch circuit comprises: the device comprises a first filter circuit, an isolated power supply module, a driving circuit, a first switching device and a driving state feedback module; one end of the first filter circuit is connected with the PWM driving signal, and the other end of the first filter circuit is connected with the isolation power supply module; the isolation power supply module comprises a second switching device and an isolation power supply circuit; one end of the second switching device is connected with the first filter circuit, and the other end of the second switching device is connected with the isolated power supply circuit; the driving circuit comprises a switch signal module, a driving chip and a protection circuit module; the driving chip is respectively connected with the switch signal module, the protection circuit module, the first switch device and the driving state feedback module; one end of the first switching device is connected with a positive power supply, and the other end of the first switching device is connected with electric equipment through a cable. The circuit has overvoltage, undervoltage and overcurrent protection functions and has the function of driving feedback.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a driving switch circuit and an integrated driving switch system.
Background
In the prior art, the drive switch circuit controls the on and off of the switch device by using the 0/1 state, so that the misleading phenomenon of the switch device caused by false triggering and circuit damage cannot be effectively avoided; without the switching device voltage absorption circuit, the switching device has a certain risk of overvoltage damage. In addition, the driving switch circuit in the prior art only has a simple driving control function and a limited overcurrent protection function, does not have overvoltage and undervoltage protection functions, does not have a driving feedback function, and is easy to damage.
Disclosure of Invention
In view of this, the embodiment of the present application provides a driving switch circuit and an integrated driving switch system, which can achieve overvoltage, undervoltage and overcurrent protection functions and have a driving feedback function.
In a first aspect, embodiments of the present application provide a driving switch circuit, including: the device comprises a first filter circuit, an isolated power supply module, a driving circuit, a first switching device and a driving state feedback module;
one end of the first filter circuit is connected with a PWM driving signal, and the other end of the first filter circuit is connected with the isolation power supply module;
the isolation power supply module comprises a second switching device and an isolation power supply circuit; one end of the second switching device is connected with the first filter circuit, and the other end of the second switching device is connected with the isolation power supply circuit;
the driving circuit comprises a switch signal module, a driving chip and a protection circuit module;
the driving chip is respectively connected with the switch signal module, the protection circuit module, the first switch device and the driving state feedback module;
one end of the first switching device is connected with a positive power supply, and the other end of the first switching device is connected with electric equipment through a cable.
In some embodiments, a buffer is connected between the PWM drive signal and the first filter circuit;
the first filter circuit comprises a first resistor and a first capacitor; one end of the first resistor is connected with the buffer, and the other end of the first resistor is connected with the first capacitor;
the first capacitor is connected with a second resistor in parallel.
In some embodiments, the drive switch circuit further comprises a filter voltage regulation module; the filtering voltage stabilizing module comprises a second capacitor and a first voltage stabilizing diode; the second capacitor is connected with the first voltage stabilizing diode in parallel;
the second capacitor is connected in parallel with a transformer in the isolated power supply circuit.
IN some embodiments, the switch signal module is connected with an IN pin of the driving chip;
the switch signal module comprises a second voltage stabilizing diode, a third capacitor and a third resistor; the second zener diode and the third resistor are connected in parallel with the first zener diode after being connected.
In some embodiments, the driving chip is connected with the first switching device through a second filter circuit;
and the HO pin of the driving chip is connected with the second filter circuit.
In some embodiments, the second filter circuit includes a fourth resistor and a fourth capacitor; the fourth resistor is connected with the HO pin of the driving chip;
the fourth capacitor is connected with a fifth resistor in parallel.
In some embodiments, the driving state feedback module includes a sixth resistor, an optocoupler, and a third filter circuit;
the driving chip is sequentially connected with a sixth resistor, an optocoupler and a third filter circuit;
the third filter circuit comprises a seventh resistor and a fifth capacitor; the seventh resistor is connected with the optocoupler;
the fifth capacitor is connected with an eighth resistor in parallel.
In some embodiments, the protection circuit module includes a first schottky diode, a ninth resistor, a tenth resistor, an eleventh resistor, and a sixth capacitor;
the eleventh resistor and the tenth resistor are connected with a CS pin of the driving chip;
the ninth resistor is connected with the HO pin of the driving chip;
the ninth resistor and the tenth resistor are connected with the first Schottky diode after being converged;
the first schottky diode is connected to the positive power supply.
In some embodiments, the drive switching circuit further comprises a first switching device voltage protection circuit;
the first switching device voltage protection circuit comprises an eleventh resistor, a seventh capacitor and a second Schottky diode; the eleventh resistor and the seventh capacitor are connected in series and then connected in parallel with the first switching device; the second Schottky diode is connected with a negative power supply; the second Schottky diode is connected with the electric equipment in parallel; the second schottky diode is connected to the first switching device.
In a second aspect, embodiments of the present application provide an integrated drive switching system, including a control chip, a plurality of packaged drive switching circuits as described above; the driving switch circuit of each package is connected with the control chip.
The embodiment of the application has the following beneficial effects: according to the driving switch, the PWM driving signal drives the second switching device MQ2 through the first filter circuit, so that the isolation power supply circuit works normally. Further, the driving state feedback module is connected with the control chip, and when the driving circuit has faults such as overvoltage, undervoltage and overcurrent, the driving chip sends out a fault signal to be sent to the control chip through the driving state feedback module, so that the safety of the driving circuit is effectively ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic diagram of a driving switch circuit according to an embodiment of the present application;
FIG. 2 shows a schematic circuit diagram of a drive switch circuit of an embodiment of the present application;
fig. 3 shows a schematic diagram of a framework of an integrated drive switching system according to an embodiment of the present application.
Description of main reference numerals:
100-a first filter circuit; 200-isolating the power module; 300-a driving circuit; 400-driving state feedback module; 500-electric equipment; 600-a control chip; 210-isolating the power supply circuit; 310-a switching signal module; 320-protection circuit module.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.
The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the following, the terms "comprises", "comprising", "having" and their cognate terms may be used in various embodiments of the present application are intended only to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of this application belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is identical to the meaning of the context in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments.
Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below and features of the embodiments may be combined with each other without conflict.
The drive switch circuit is described below in connection with specific embodiments.
Fig. 1 shows a schematic diagram of a driving switch circuit according to an embodiment of the present application. Illustratively, the drive switch circuit includes: the device comprises a first filter circuit 100, an isolated power supply module 200, a driving circuit 300, a first switching device MQ1 and a driving state feedback module 400.
One end of the first filter circuit 100 is connected with a PWM driving signal, and the other end of the first filter circuit 100 is connected with the isolation power module 200; the isolated power supply module 200 includes a second switching device MQ2 and an isolated power supply circuit 210; one end of the second switching device MQ2 is connected to the first filtering circuit 100, and the other end of the second switching device MQ2 is connected to the isolated power circuit 210.
The PWM driving signal is sent by the control chip 600, and drives the second switching device MQ2 through the first filter circuit 100, so that the isolated power circuit 210 works normally.
The driving circuit 300 includes a switching signal module 310, a driving chip U1, and a protection circuit module 320; the driving chip U1 is connected to the switching signal module 310, the protection circuit module 320, the first switching device MQ1, and the driving state feedback module 400, respectively.
The driving state feedback module 400 is connected to the control chip 600, when the driving circuit 300 has faults such as overvoltage, undervoltage, overcurrent, etc., the driving chip U1 sends a fault signal to the control chip 600 through the driving state feedback module 400, and after the control chip 600 receives the fault signal, the control chip 600 can stop sending a PWM driving signal and send fault information to the upper computer.
Further, one end of the first switching device MQ1 is connected to a positive power supply, and the other end of the first switching device MQ1 is connected to the electric device 500 through a cable VO.
When the driving switch circuit works, when the control chip 600 sends out a PWM driving signal, the first switch device MQ1 is turned on, the positive power supply VDD+ is connected with the cable VO, and the electric equipment 500 obtains a working power supply; when the control chip 600 stops sending the PWM driving signal, the first switching device MQ1 is turned off, disconnecting the positive power supply vdd+ from the cable VO, and the electric device 500 loses the operating power.
As shown in fig. 2, in some embodiments, a buffer U2 is connected between the PWM driving signal and the first filter circuit 100; the first filter circuit 100 includes a first resistor R1 and a first capacitor C1; one end of the first resistor R1 is connected with the buffer U2, and the other end of the first resistor R1 is connected with the first capacitor C1; the first capacitor C1 is connected with a second resistor R2 in parallel; one end of the first capacitor C1 connected in parallel with the second resistor R2 is connected with the second switching device MQ2, and the other end of the first capacitor C is grounded.
It can be understood that the PWM driving signal drives the second switching device MQ2 through the first filter circuit 100 formed by the buffer U2, the first resistor R1, and the first capacitor C1, so that the isolated power circuit 210 operates normally. Further, the first capacitor C1 is connected in parallel to the second resistor R2, so that when the power is stopped, the first capacitor C1 may have a certain voltage, and in order to prevent the reserved voltage of the first capacitor C1 from making the second switching device MQ2 conductive, a second resistor R2 connected in parallel to the first capacitor C1 is provided to release the reserved voltage of the first capacitor C1.
In some embodiments, as shown in fig. 2, the isolated power circuit includes a third schottky diode SD3, a fourth schottky diode SD4, a twelfth resistor R12, an eighth capacitor C8, and a transformer T1; the second switching device MQ2 is connected with the anode of the fourth Schottky diode SD 4; one end of the twelfth resistor R12 connected in parallel with the eighth capacitor C8 is connected with the cathode of the fourth Schottky diode SD4, and the other end of the twelfth resistor R12 is connected with the 1 interface of the transformer T1; the second switching device MQ2 is connected to the 2 interface of the transformer T1, and the 4 interface of the transformer T1 is connected to the anode of the third schottky diode SD 3.
In some embodiments, as shown in fig. 2, the driving switch circuit further includes a filtering voltage stabilizing module; the filtering voltage stabilizing module comprises a second capacitor C2 and a first voltage stabilizing diode ZD1; the second capacitor C2 is connected with the first zener diode ZD1 in parallel; the second capacitor C2 is connected in parallel with the transformer T1 in the isolated power circuit 210.
Wherein, one end of the second capacitor C2 and the first zener diode ZD1 are connected in parallel, and then connected with the cathode of the third schottky diode SD3, and one end is connected with the 3 interface of the transformer T1.
Further, as shown in fig. 2, the switching signal module 310 includes a second zener diode ZD2, a third capacitor C3, and a third resistor R3; one end of the third capacitor C3 connected IN parallel with the third resistor R3 is connected with the positive electrode of the second zener diode ZD2, and the other end is connected with the IN pin of the driving chip U1; the IN pin is an input pin of the driving chip U1. The electric energy output by the isolation power supply module 200 is changed into a direct current stabilized power supply to supply power to the driving chip U1 after being subjected to energy storage filtering by the second capacitor C2 and voltage stabilization by the first voltage stabilizing diode ZD2, and the direct current stabilized power supply forms a switching signal to supply power to the driving chip U1 through the second voltage stabilizing diode ZD2, the third capacitor C3 and the third resistor R3.
In some embodiments, as shown in fig. 2, the driving chip U1 is connected to the first switching device MQ1 through a second filter circuit; the HO pin of the driving chip U1 is connected with the second filter circuit; the HO pin is an output pin of the driving chip U1, and the driving chip U1 drives the first switching device MQ1 to be turned on and turned off through a second filter circuit formed by the fourth resistor R4 and the fourth capacitor C4. The second filter circuit comprises a fourth resistor R4 and a fourth capacitor C4; the fourth resistor R4 is connected with the HO pin of the driving chip U1; the fourth capacitor C4 is connected in parallel to the fifth resistor R5, so that when the power is stopped, the fourth capacitor C4 may have a certain voltage, and in order to prevent the reserved voltage of the fourth capacitor C4 from making the first switching device MQ1 conductive, a fifth resistor R5 connected in parallel to the fourth capacitor C4 is provided to release the reserved voltage of the fourth capacitor C4.
Further, as shown in fig. 2, the driving chip U1 safely turns off the first switching device MQ1 through the protection circuit module 320 when the first switching device MQ1 is over-current, so as to avoid the damage caused by the large current flowing through the first switching device MQ 1. The protection circuit module 320 includes a first schottky diode SD1, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a sixth capacitor C6; the eleventh resistor R11 is connected in parallel with the sixth capacitor C6, one end of the eleventh resistor R11 is connected with the CS pin of the driving chip U1, and the other end is connected with the VS pin of the driving chip U1; the ninth resistor R9 is connected with the HO pin of the driving chip U1; the ninth resistor R9 and the tenth resistor R10 are connected with the anode of the first Schottky diode SD1 after being converged; the first schottky diode SD1 is connected to the positive power supply vdd+. The CS pin of the driving chip U1 is preset with a current and voltage reference interval, and when the voltage or current of the CS pin of the driving chip U1 is not in the reference interval, the driving chip U1 is turned off, and no current is output through the HO pin, so that the first switching device MQ1 is protected.
In some embodiments, as shown in fig. 2, the driving status feedback module 400 includes a sixth resistor R6, an optocoupler U3, and a third filter circuit; the driving chip U1 is sequentially connected with a sixth resistor R6, an optocoupler U3 and a third filter circuit; the third filter circuit comprises a seventh resistor R7 and a fifth capacitor C5; the seventh resistor R7 is connected with the optical coupler U3; the fifth capacitor C5 is connected in parallel with an eighth resistor R8. One end of the sixth resistor R6 is connected with the VCC pin of the driving U1, and one end of the optocoupler U3 is connected with the FLT pin of the driving chip U1.
The driving chip U1 is preset with a voltage value and a preset interval value of the current value, if the current value and/or the voltage value exceeds the preset interval value, that is, when the driving circuit 300 has faults such as overvoltage, undervoltage, overcurrent and the like, the driving chip U1 sends a fault signal, the fault signal is transmitted through the sixth resistor R6 and the optocoupler U3 and is filtered by the thirteenth resistor R13 and the fifth capacitor C5 and then is sent to the control chip 600, and after the control chip 600 receives the fault signal, the PWM driving signal can be stopped being sent, and the fault information is sent to the upper computer.
In some embodiments, as shown in fig. 2, the driving switching circuit further includes a first switching device voltage protection circuit; the first switching device voltage protection circuit includes an eleventh resistor R11, a seventh capacitor C7, and a second schottky diode SD2; the eleventh resistor R11 and the seventh capacitor C7 are connected in series and then connected in parallel with the first switching device MQ 1; the second schottky diode SD2 is connected to a negative power supply VDD; the second schottky diode SD2 is connected in parallel with the electric device 500; the second schottky diode SD2 is connected to the first switching device MQ 1.
The second schottky diode SD2 is configured to clamp the potential of the cable VO near the negative power supply VDD-after the first switching device MQ1 turns off the output, so that the voltage born by the first switching device MQ1 after turning off is maintained at a safe voltage. The absorption circuit formed by the eleventh resistor R11 and the seventh capacitor C7 absorbs and consumes the voltage of the first switching device MQ1 in the recovery time before the second Schottky diode SD2 achieves the clamping function, and the eleventh resistor R11, the seventh capacitor C7 and the second Schottky diode SD2 jointly form the voltage protection circuit of the first switching device MQ1, so that the first switching device MQ1 is not broken down by overvoltage in the working process.
It should be noted that the PWM driving signal is a PWM wave sent by the control chip, the duty ratio of the PWM wave needs to be determined according to the first switching control MQ1, if the first switching device MQ1 is a MOS transistor switching device, the voltage values on two sides of the second capacitor C2 may reach 12V-14V, and the duty ratio of the PWM wave is determined in accordance with the voltage value of the second capacitor C2. Therefore, only the PWM wave with proper duty ratio can lead the first switching device MQ1 to be conducted, other states can not lead the first switching device MQ1 to be conducted, and the phenomenon that the first switching device MQ1 is wrongly turned on due to external factors such as circuit initialization, external interference, circuit damage and the like is effectively avoided.
According to the driving switch, the PWM driving signal drives the second switching device MQ2 through the first filter circuit, so that the isolation power supply circuit works normally. Further, the driving state feedback module is connected with the control chip, and when the driving circuit has faults such as overvoltage, undervoltage and overcurrent, the driving chip sends out a fault signal to be sent to the control chip through the driving state feedback module, so that the safety of the driving circuit is effectively ensured.
On the other hand, the application also provides an integrated driving switch system, and fig. 3 shows a schematic structural diagram of the integrated driving switch system in the embodiment of the application. Illustratively, the integrated drive switching system includes: a control chip 600 and a plurality of encapsulated driving switching circuits described above; the driving switching circuit of each package is connected to the control chip 600. Such a control chip 600 can control a plurality of driving switch circuits at the same time, and each driving switch circuit controls one electric device 500, so as to further optimize the design space, reduce circuit components, and reduce the failure rate of the circuit.
It will be appreciated that the options of driving the switching circuit in the above embodiments are equally applicable to the present embodiment, and thus the description thereof will not be repeated here.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application.
Claims (10)
1. A drive switching circuit, comprising: the device comprises a first filter circuit, an isolated power supply module, a driving circuit, a first switching device and a driving state feedback module;
one end of the first filter circuit is connected with a PWM driving signal, and the other end of the first filter circuit is connected with the isolation power supply module;
the isolation power supply module comprises a second switching device and an isolation power supply circuit; one end of the second switching device is connected with the first filter circuit, and the other end of the second switching device is connected with the isolation power supply circuit;
the driving circuit comprises a switch signal module, a driving chip and a protection circuit module;
the driving chip is respectively connected with the switch signal module, the protection circuit module, the first switch device and the driving state feedback module;
one end of the first switching device is connected with a positive power supply, and the other end of the first switching device is connected with electric equipment through a cable.
2. The drive switching circuit according to claim 1, wherein a buffer is connected between the PWM drive signal and the first filter circuit;
the first filter circuit comprises a first resistor and a first capacitor; one end of the first resistor is connected with the buffer, and the other end of the first resistor is connected with the first capacitor;
the first capacitor is connected with a second resistor in parallel.
3. The drive switching circuit of claim 1, further comprising a filter voltage regulation module; the filtering voltage stabilizing module comprises a second capacitor and a first voltage stabilizing diode; the second capacitor is connected with the first voltage stabilizing diode in parallel;
the second capacitor is connected in parallel with a transformer in the isolated power supply circuit.
4. The driving switching circuit according to claim 3, wherein the switching signal module is connected to an IN pin of the driving chip;
the switch signal module comprises a second voltage stabilizing diode, a third capacitor and a third resistor; the second zener diode and the third resistor are connected in parallel with the first zener diode after being connected.
5. The drive switching circuit according to claim 1, wherein the drive chip is connected to the first switching device through a second filter circuit;
and the HO pin of the driving chip is connected with the second filter circuit.
6. The drive switching circuit according to claim 5, wherein the second filter circuit includes a fourth resistor and a fourth capacitor; the fourth resistor is connected with the HO pin of the driving chip;
the fourth capacitor is connected with a fifth resistor in parallel.
7. The drive switch circuit of claim 1, wherein the drive state feedback module comprises a sixth resistor, an optocoupler, and a third filter circuit;
the driving chip is sequentially connected with a sixth resistor, an optocoupler and a third filter circuit;
the third filter circuit comprises a seventh resistor and a fifth capacitor; the seventh resistor is connected with the optocoupler;
the fifth capacitor is connected with an eighth resistor in parallel.
8. The drive switching circuit according to claim 1, wherein the protection circuit module includes a first schottky diode, a ninth resistor, a tenth resistor, an eleventh resistor, and a sixth capacitor;
the eleventh resistor and the tenth resistor are connected with a CS pin of the driving chip;
the ninth resistor is connected with the HO pin of the driving chip;
the ninth resistor and the tenth resistor are connected with the first Schottky diode after being converged;
the first schottky diode is connected to the positive power supply.
9. The drive switching circuit of claim 1, further comprising a first switching device voltage protection circuit;
the first switching device voltage protection circuit comprises an eleventh resistor, a seventh capacitor and a second Schottky diode; the eleventh resistor and the seventh capacitor are connected in series and then connected in parallel with the first switching device; the second Schottky diode is connected with a negative power supply; the second Schottky diode is connected with the electric equipment in parallel; the second schottky diode is connected to the first switching device.
10. An integrated drive switching system comprising a control chip, a plurality of packaged drive switching circuits according to any one of claims 1-9;
the driving switch circuit of each package is connected with the control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317869.6U CN220586262U (en) | 2023-08-25 | 2023-08-25 | Driving switch circuit and integrated driving switch system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322317869.6U CN220586262U (en) | 2023-08-25 | 2023-08-25 | Driving switch circuit and integrated driving switch system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220586262U true CN220586262U (en) | 2024-03-12 |
Family
ID=90113322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322317869.6U Active CN220586262U (en) | 2023-08-25 | 2023-08-25 | Driving switch circuit and integrated driving switch system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220586262U (en) |
-
2023
- 2023-08-25 CN CN202322317869.6U patent/CN220586262U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10541646B2 (en) | Disconnection apparatus for a photovoltaic string, solar installation and operating method for a solar installation with a photovoltaic string | |
| US9438136B2 (en) | Converter for electric power | |
| EP3672008A1 (en) | Series compensator, and control method | |
| US9722411B2 (en) | Secondary power system and power supply device | |
| WO2015031069A1 (en) | Power controller | |
| US20090141414A1 (en) | Protection circuit for electric power of a car | |
| CN105811776A (en) | Switching power supply circuit | |
| KR20210008334A (en) | High voltage battery cluster and overcurrent protection circuit and switch box of high voltage battery cluster | |
| US6600668B1 (en) | Crowbar circuit for low output voltage DC/DC converters | |
| US10666043B2 (en) | Disconnection apparatus for a photovoltaic string, solar installation and operating method for a solar installation with a photovoltaic string | |
| CN220586262U (en) | Driving switch circuit and integrated driving switch system | |
| CN203674691U (en) | Undervoltage and overvoltage protection circuit for power supply circuit | |
| CN112039028B (en) | Remote control instruction and bus under-voltage protection circuit with strong anti-jamming capability | |
| CN101699686A (en) | Protection device of switch power supply and method thereof | |
| CN110829359B (en) | Power driving circuit with overload protection function | |
| CN108539968A (en) | Switching Power Supply and its control method | |
| US20170054285A1 (en) | Protection apparatus for an electrical load, voltage converter comprising a protection apparatus, and method for protecting an electrical load | |
| CN113794452B (en) | Negative voltage protection circuit of phased array radar antenna | |
| CN211321311U (en) | Safety switch with switching function | |
| CN211908757U (en) | Protection circuit for power semiconductor device | |
| CN207819518U (en) | A kind of anti-explosion battery and the isolation protective circuit for anti-explosion battery | |
| US20180233896A1 (en) | Supply device for an electrical module having a fuse element | |
| JP2012019647A (en) | Power supply device | |
| CN213461127U (en) | Input power supply protection circuit applied to Internet of things equipment | |
| CN111786354B (en) | Thyristor short-circuit protection circuit and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |