CN108803766B - Controller operating voltage management system - Google Patents
Controller operating voltage management system Download PDFInfo
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- CN108803766B CN108803766B CN201810729691.7A CN201810729691A CN108803766B CN 108803766 B CN108803766 B CN 108803766B CN 201810729691 A CN201810729691 A CN 201810729691A CN 108803766 B CN108803766 B CN 108803766B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/001—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of incorrect or interrupted earth connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
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- Automation & Control Theory (AREA)
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Abstract
The invention provides a controller working voltage management system, which comprises: the ESD protection circuit is used for releasing the electrostatic voltage on the power supply line and converting an input voltage signal on the power supply line into a first voltage signal after the electrostatic voltage is released; the TVS protection circuit clamps the first voltage signal to obtain a second voltage signal; the EMC protection circuit is used for carrying out first filtering processing on the second voltage signal, filtering high-frequency interference generated by radiation emission and conducted emission on the power supply line and obtaining a third voltage signal; the CLC filter circuit is used for carrying out second filtering processing on the third voltage signal, filtering out high-frequency interference signals in the third voltage signal and obtaining a fourth voltage signal; and the voltage monitoring circuit is used for carrying out voltage division processing on the fourth voltage signal to generate a fifth voltage signal, and carrying out clamping and filtering processing to obtain an input voltage signal of the controller. Therefore, the normal work of the controller is ensured, and the controller is prevented from being damaged when the voltage is abnormal.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a controller working voltage management system.
Background
With the rapid development of computer technology and artificial intelligence technology, intelligent robot technology has become a hot spot for research of numerous scholars at home and abroad.
When the vehicle runs, the normal voltage during running has a certain range, and if the controller works under the abnormal voltage, the controller can be damaged. Therefore, how to set the voltage range to ensure that the vehicle controller operates normally under the voltage is a problem to be solved urgently.
Disclosure of Invention
The embodiment of the invention aims to provide a controller working voltage management system to solve the problem that a controller is damaged under abnormal working voltage.
In order to solve the above problems, the present invention provides a controller operating voltage management system, including:
an electrostatic impeder ESD protection circuit connected in parallel between the power supply line and the ground line; the ESD protection circuit is used for releasing the electrostatic voltage on the power supply line and converting an input voltage signal on the power supply line into a first voltage signal after the electrostatic voltage is released;
the transient voltage suppressor TVS protection circuit is connected with the ESD protection circuit in parallel and is used for clamping the first voltage signal to obtain a second voltage signal;
the electromagnetic compatibility (EMC) protection circuit is connected with the TVS protection circuit in parallel and is used for carrying out first filtering processing on the second voltage signal to obtain a third voltage signal;
the CLC filter circuit is connected with the EMC protection circuit in parallel and used for carrying out second filtering processing on the third voltage signal to obtain a fourth voltage signal;
the voltage monitoring circuit is connected with the CLC filter circuit in parallel and is used for carrying out voltage division processing on the fourth voltage signal to generate a fifth voltage signal and carrying out clamping and filtering processing on the fifth voltage signal to obtain an input voltage signal of the controller;
wherein the first filtering process specifically includes: filtering high-frequency interference generated by radiation emission and conduction emission on the power supply line;
the second filtering process specifically includes: and filtering out high-frequency interference signals in the third voltage signals.
Preferably, the controller working voltage management system further comprises a reverse connection protection circuit;
and the reverse connection protection circuit is connected with the EMC protection circuit in parallel and is used for controlling the controller working voltage management system to be cut off when the TVS protection circuit is reversely connected with the positive electrode and the negative electrode of the power supply wire and the grounding wire.
Preferably, the ESD protection circuit includes: a first capacitor and a second capacitor;
the first capacitor is connected with the second capacitor in series, the first end of the first capacitor is connected with the power supply line, the second end of the first capacitor is connected with the first end of the second capacitor, and the second end of the second capacitor is connected with the ground.
Preferably, the TVS protection circuit includes: the diode comprises a first voltage stabilizing diode, a first TVS diode and a second TVS diode;
the positive pole of first zener diode is connected with the first end of first electric capacity and power supply line, the negative pole of first zener diode is connected with the negative pole of first TVS diode and the negative pole of second TVS diode, the positive pole of first TVS diode with the positive pole ground connection of second TVS diode, first TVS diode with second TVS diode parallel connection.
Preferably, the EMC protection circuit includes: a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor;
the third capacitor, the fourth capacitor and the fifth capacitor are connected in parallel, a first end of the third capacitor, a first end of the fourth capacitor and a first end of the fifth capacitor are respectively connected with an anode of a first voltage stabilizing diode, and a second end of the third capacitor, a second end of the fourth capacitor and a second end of the fifth capacitor are respectively connected with the ground;
the sixth capacitor, the seventh capacitor and the eighth capacitor are connected in parallel, a first end of the sixth capacitor, a first end of the seventh capacitor and a first end of the eighth capacitor are respectively connected to the ground, and a second end of the sixth capacitor, a second end of the seventh capacitor and a second end of the eighth capacitor are respectively connected to an anode of a second TVS diode.
Preferably, the reverse connection protection circuit includes: the MOS transistor comprises a first resistor, a metal-oxide-semiconductor field effect transistor (MOS), a second resistor and a second voltage stabilizing diode;
the first end of the first resistor is connected with the first end of the fourth capacitor, the second end of the first resistor is respectively connected with the grid electrode of the MOS tube, the first end of the second resistor and the cathode of the second voltage stabilizing diode, the drain electrode of the MOS tube is connected with the second end of the eighth capacitor, and the source electrode of the MOS tube is connected with the second end of the second resistor and the anode of the second voltage stabilizing diode.
Preferably, the CLC filter circuit includes: a ninth capacitor, a tenth capacitor, an eleventh capacitor, a first inductor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor and a sixteenth capacitor;
the ninth capacitor, the tenth capacitor and the eleventh capacitor are connected in parallel, a first end of the ninth capacitor is connected with a first end of the first resistor, a first end of the tenth capacitor, a first end of the eleventh capacitor and a first end of the first inductor respectively, and a second end of the ninth capacitor is connected with an anode of the second zener diode, a second end of the tenth capacitor and a second end of the eleventh capacitor respectively;
the twelfth capacitor, the thirteenth capacitor, the fourteenth capacitor, the fifteenth capacitor and the sixteenth capacitor are connected in parallel, a first end of the twelfth capacitor is connected to the second end of the first inductor, the first end of the thirteenth capacitor, the first end of the fourteenth capacitor, the first end of the fifteenth capacitor and the first end of the sixteenth capacitor respectively, and a second end of the twelfth capacitor is connected to the second end of the thirteenth capacitor, the second end of the fourteenth capacitor, the second end of the fifteenth capacitor and the second end of the sixteenth capacitor respectively.
Preferably, the thirteenth capacitor and the fourteenth capacitor are aluminum electrolytic capacitors.
Preferably, the voltage monitoring circuit includes: the third resistor, the fourth resistor, the seventeenth capacitor and the clamping diode;
the first end of the third resistor is connected with the first end of a sixteenth capacitor, the second end of the third resistor is respectively connected with the first end of a fourth resistor, the anode of a clamping diode and the first end of a seventeenth capacitor, the second end of the fourth resistor is connected with the ground, the cathode of the clamping diode is connected with a controller, and the second end of the seventeenth capacitor is connected with the ground.
Therefore, the controller working voltage management system provided by the embodiment of the invention ensures the normal work of the controller and avoids the controller from being damaged when the voltage is abnormal.
Drawings
Fig. 1 is a block diagram of a system for managing operating voltage of a controller according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a controller operating voltage management system according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be further noted that, for the convenience of description, only the portions related to the related invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a block diagram of a system for managing operating voltage of a controller according to an embodiment of the present invention. In this application, the controller can be Micro-control Unit (MCU), and MCU has a higher requirement to operating voltage, only when MCU's supply voltage is normal, just can normally work, when supply voltage is abnormal, must guarantee that MCU is not damaged. As shown in fig. 1, the controller operating voltage management system 100 includes: an electrostatic-discharge (ESD) protection circuit 110, a Transient Voltage Suppressor (TVS) protection circuit 120, an electromagnetic Compatibility (EMC) protection circuit 130, a reverse connection protection circuit 140, a CLC filter circuit 150, and a Voltage monitoring circuit 160.
An ESD protection circuit 110 connected in parallel between a power supply line and a ground line; the ESD protection circuit is used for releasing the electrostatic voltage on the power supply line and converting the input voltage signal of the electricity utilization module into a first voltage signal after the electrostatic voltage is released.
The TVS protection circuit 120 is connected in parallel with the ESD protection circuit, and is configured to clamp the first voltage signal to obtain a second voltage signal.
And the EMC protection circuit 130 is connected in parallel with the TVS protection circuit and is used for performing first filtering processing on the second voltage signal to obtain a third voltage signal.
The first filtering process specifically includes: high frequency interference generated by radiated emissions and conducted emissions on the supply line is filtered out.
And the CLC filter circuit 150 is connected in parallel with the EMC protection circuit and is used for carrying out second filtering processing on the third voltage signal to obtain a fourth voltage signal.
The second filtering process specifically includes: and filtering out high-frequency interference signals in the third voltage signals.
And the voltage monitoring circuit 160 is connected in parallel with the CLC filtering circuit and is configured to divide the fourth voltage signal to generate a fifth voltage signal, and clamp and filter the fifth voltage signal to obtain an input voltage signal of the controller.
Further, the controller operating voltage management system further includes a reverse connection protection circuit 140.
And the reverse connection protection circuit 140 is connected in parallel with the EMC protection circuit 130 and is used for controlling the controller working voltage management system to be cut off when the TVS protection circuit 110 is reversely connected with the positive electrode and the negative electrode of the power supply wire and the grounding wire.
Therefore, the working voltage of the controller is kept within a normal range through the controller working voltage management system, and the controller is prevented from being damaged when the working voltage is abnormal.
Fig. 2 is a schematic structural diagram of a controller operating voltage management system according to an embodiment of the present invention. In fig. 2, there are two lines, one is a power supply line and the other is a ground line, and it is understood that, in the circuit configuration, the respective circuits are connected in parallel between the power supply line and the ground line, and in the signal flow direction, the voltage signal output from the previous stage is input to the circuit of the next stage. The power supply line is connected with the anode of the power supply module, the grounding line is connected with the grounding end, the power supply line can be connected with the power supply unit, and the power supply unit can be a storage battery.
As shown in fig. 2, the ESD protection circuit 110 includes: a first capacitor C1 and a second capacitor C2.
The first capacitor C1 is connected in series with the second capacitor C2, the first end of the first capacitor C1 is connected to the supply line, the second end of the first capacitor C1 is connected to the first end of the second capacitor C2, and the second end of the second capacitor C2 is connected to ground. The electrostatic voltage on the supply line is absorbed by the first capacitor C1 and the second capacitor C2.
For example, for an ESD protection circuit, an ESD pulse with a peak value of 30A will generate a resistance drop of several tens of millivolts on the ground, but its steep rise time (30A/ns) can generate an induced voltage signal of up to several hundreds of volts on the same line, which is enough to cause generation of error data, and such a high frequency will generate skin effect, resulting in a significant increase of the line resistance. To counteract this effect, ESD protection circuits need to be employed to obtain low resistance characteristics. Therefore, the low-resistance output of the whole controller working voltage management system is realized through the ESD protection circuit 110.
Through releasing the static voltage on the power supply line, the static protection is realized, the controller working voltage management system is prevented from being damaged by static electricity, and the safety and the stability of the whole system are protected.
The TVS protection circuit 120 includes: a first zener diode D1, a first TVS diode D2, and a second TVS diode D3;
an anode of the first zener diode D1 is connected to the first end of the first capacitor C1 and the input stage of the power utilization module, a cathode of the first zener diode D1 is connected to a cathode of the first TVS diode D2 and a cathode of the second TVS diode D3, an anode of the first TVS diode D2 is connected to an anode of the second TVS diode D3, and the first TVS diode D2 and the second TVS diode D3 are connected in parallel. The first zener diode D1 is a reverse protection diode, and is configured to perform reverse protection on the first TVS diode D2 and the second TVS diode D3.
TVS diodes are high performance protection devices. When the two poles of the TVS diode are impacted by reverse transient high energy, the high impedance between the two poles of the TVS diode can be changed into low impedance at the speed of 10 to 12 seconds, and the surge power of thousands of watts can be absorbed, so that the voltage between the two poles is clamped at a preset value, and precision components in an electronic circuit are effectively protected from being damaged by various surge pulses.
Thus, the first voltage signal is clamped to the second voltage signal through the first TVS diode D2 and the second TVS diode D3. The migration of heavy-load high-voltage signals is realized, and the normal work of the controller working voltage management system is ensured.
Further, the EMC protection circuit 130 includes: a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7 and an eighth capacitor C8.
The third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5 are connected in parallel, a first end of the third capacitor C3, a first end of the fourth capacitor C4 and a first end of the fifth capacitor C5 are respectively connected with an anode of the first zener diode D1, and a second end of the third capacitor C3, a second end of the fourth capacitor C4 and a second end of the fifth capacitor C5 are respectively connected to ground.
The sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 are connected in parallel, a first end of the sixth capacitor C6, a first end of the seventh capacitor C7 and a first end of the eighth capacitor C8 are respectively connected to ground, and a second end of the sixth capacitor C6, a second end of the seventh capacitor C7 and a second end of the eighth capacitor C8 are respectively connected to an anode of the second TVS diode D3.
Specifically, the electromagnetic energy radiated by the system power supply line affects and hinders the normal operation of peripheral electrical equipment, and in order to eliminate the Radiation Emission (RE) and Conduction Emission (CE) on the power supply line from being transmitted to the power supply network to interfere with other electrical equipment, the EMC protection circuit can be used for high-frequency filtering. At the moment, filtering of different frequency bands can be carried out by selecting the capacitors with different capacitance values, so that filtering of each frequency band can be carried out according to the requirement of a reliability test, and the EMC requirement of the controller can be met.
Further, the reverse connection protection circuit 140 includes: a first resistor R1, a metal-oxide semiconductor (MOS) transistor, a second resistor R2, and a second zener diode D4;
the first end of the first resistor R1 is connected with the first end of the fourth capacitor C4, the second end of the first resistor R1 is connected with the gate of the MOS transistor, the first end of the second resistor R2 and the cathode of the second voltage stabilizing diode D4 respectively, the drain of the MOS transistor is connected with the second end of the eighth capacitor C8, and the source of the MOS transistor is connected with the second end of the second resistor R2 and the anode of the second voltage stabilizing diode D4. The second voltage stabilizing diode D4 is used for stabilizing the voltage of the MOS transistor.
Specifically, when the power supply module and the controller working voltage management system (system for short) are reversely connected, the MOS transistor is not conducted, and when the power supply module and the controller working voltage management system are positively connected, the MOS transistor is conducted, so that reverse connection protection is performed on the system. When the system is reversely connected, the reverse connection protection circuit protects the controller from being damaged.
The MOS transistor is a P-channel Metal oxide semiconductor (PMOS) transistor.
Further, the CLC filter circuit 150 includes: a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a first inductor L1, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15 and a sixteenth capacitor C16.
A ninth capacitor C9, a tenth capacitor C10 and an eleventh capacitor C11 are connected in parallel, a first end of the ninth capacitor C9 is connected to a first end of the first resistor R1, a first end of the tenth capacitor C10, a first end of the eleventh capacitor C11 and a first end of the first inductor L1, respectively, and a second end of the ninth capacitor C9 is connected to an anode of the second zener diode D4, a second end of the tenth capacitor C10 and a second end of the eleventh capacitor C11, respectively.
A twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth capacitor C14, a fifteenth capacitor C15 and a sixteenth capacitor C16 are connected in parallel, a first end of the twelfth capacitor C12 is connected to the second end of the first inductor L1, the first end of the thirteenth capacitor C13, the first end of the fourteenth capacitor C14, the first end of the fifteenth capacitor C15 and the first end of the sixteenth capacitor C16, respectively, and a second end of the twelfth capacitor C12 is connected to the second end of the thirteenth capacitor C13, the second end of the fourteenth capacitor C14, the second end of the fifteenth capacitor C15 and the second end of the sixteenth capacitor C16, respectively, and grounded.
Further, the thirteenth capacitor C13 and the fourteenth capacitor C14 are aluminum electrolytic capacitors. The rest capacitors are ceramic capacitors. This filters high-frequency ac interference on the power supply network.
Further, the voltage monitoring circuit 160 includes: a third resistor R3, a fourth resistor R4, a seventeenth capacitor C17 and a clamping diode D5.
A first end of the third resistor R3 is connected to a first end of the sixteenth capacitor C16, a second end of the third resistor R3 is connected to a first end of the fourth resistor R4, an anode of the clamp diode D5 and a first end of the seventeenth capacitor C17, a second end of the fourth resistor R4 is grounded, a cathode of the clamp diode D5 is connected to the controller, and a second end of the seventeenth capacitor C17 is grounded.
The third resistor R3 and the fourth resistor R4 divide the fourth voltage signal to generate a fifth voltage signal, and the clamping diode D5 is used for clamping the fifth voltage signal, so that damage to the system caused by the fact that the fifth voltage signal is too high is avoided. The seventeenth capacitor C17 is used for filtering the voltage signal after the clamping process, and further filtering out high frequency components therein, thereby obtaining an input voltage signal of the controller.
By applying the controller working voltage management system provided by the embodiment of the invention, the normal work of the controller is ensured, and the controller is prevented from being damaged when the voltage is abnormal.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A controller operating voltage management system, the controller operating voltage management system comprising:
an electrostatic impeder ESD protection circuit connected in parallel between the power supply line and the ground line; the ESD protection circuit is used for releasing the electrostatic voltage on the power supply line and converting an input voltage signal on the power supply line into a first voltage signal after the electrostatic voltage is released;
the transient voltage suppressor TVS protection circuit is connected with the ESD protection circuit in parallel and is used for clamping the first voltage signal to obtain a second voltage signal;
the electromagnetic compatibility (EMC) protection circuit is connected with the TVS protection circuit in parallel and is used for carrying out first filtering processing on the second voltage signal to obtain a third voltage signal;
the CLC filter circuit is connected with the EMC protection circuit in parallel and used for carrying out second filtering processing on the third voltage signal to obtain a fourth voltage signal;
the voltage monitoring circuit is connected with the CLC filter circuit in parallel and is used for carrying out voltage division processing on the fourth voltage signal to generate a fifth voltage signal and carrying out clamping and filtering processing on the fifth voltage signal to obtain an input voltage signal of the controller;
wherein the first filtering process specifically includes: filtering high-frequency interference generated by radiation emission and conduction emission on the power supply line;
the second filtering process specifically includes: filtering out high-frequency interference signals in the third voltage signals;
the controller working voltage management system further comprises a reverse connection protection circuit;
the reverse connection protection circuit is connected with the EMC protection circuit in parallel and used for controlling the controller working voltage management system to be cut off when the TVS protection circuit is reversely connected with the positive electrode and the negative electrode of the power supply line and the grounding line.
2. The controller operating voltage management system of claim 1, wherein the ESD protection circuit comprises: a first capacitor and a second capacitor;
the first capacitor is connected with the second capacitor in series, the first end of the first capacitor is connected with the power supply line, the second end of the first capacitor is connected with the first end of the second capacitor, and the second end of the second capacitor is connected with the ground.
3. The controller operating voltage management system of claim 1, wherein the TVS protection circuit comprises: the diode comprises a first voltage stabilizing diode, a first TVS diode and a second TVS diode;
the positive pole of first zener diode is connected with the first end of first electric capacity and power supply line, the negative pole of first zener diode is connected with the negative pole of first TVS diode and the negative pole of second TVS diode, the positive pole of first TVS diode with the positive pole ground connection of second TVS diode, first TVS diode with second TVS diode parallel connection.
4. The controller operating voltage management system of claim 1, wherein the EMC protection circuit comprises: a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor;
the third capacitor, the fourth capacitor and the fifth capacitor are connected in parallel, a first end of the third capacitor, a first end of the fourth capacitor and a first end of the fifth capacitor are respectively connected with an anode of a first voltage stabilizing diode, and a second end of the third capacitor, a second end of the fourth capacitor and a second end of the fifth capacitor are respectively connected with the ground;
the sixth capacitor, the seventh capacitor and the eighth capacitor are connected in parallel, a first end of the sixth capacitor, a first end of the seventh capacitor and a first end of the eighth capacitor are respectively connected to the ground, and a second end of the sixth capacitor, a second end of the seventh capacitor and a second end of the eighth capacitor are respectively connected to an anode of a second TVS diode.
5. The controller operating voltage management system of claim 4, wherein the reverse-connect protection circuit comprises: the MOS transistor comprises a first resistor, a metal-oxide-semiconductor field effect transistor (MOS), a second resistor and a second voltage stabilizing diode;
the first end of the first resistor is connected with the first end of the fourth capacitor, the second end of the first resistor is respectively connected with the grid electrode of the MOS tube, the first end of the second resistor and the cathode of the second voltage stabilizing diode, the drain electrode of the MOS tube is connected with the second end of the eighth capacitor, and the source electrode of the MOS tube is connected with the second end of the second resistor and the anode of the second voltage stabilizing diode.
6. The controller operating voltage management system of claim 1, wherein the CLC filter circuit comprises: a ninth capacitor, a tenth capacitor, an eleventh capacitor, a first inductor, a twelfth capacitor, a thirteenth capacitor, a fourteenth capacitor, a fifteenth capacitor and a sixteenth capacitor;
the ninth capacitor, the tenth capacitor and the eleventh capacitor are connected in parallel, a first end of the ninth capacitor is connected with a first end of the first resistor, a first end of the tenth capacitor, a first end of the eleventh capacitor and a first end of the first inductor respectively, and a second end of the ninth capacitor is connected with an anode of the second zener diode, a second end of the tenth capacitor and a second end of the eleventh capacitor respectively;
the twelfth capacitor, the thirteenth capacitor, the fourteenth capacitor, the fifteenth capacitor and the sixteenth capacitor are connected in parallel, a first end of the twelfth capacitor is connected to the second end of the first inductor, the first end of the thirteenth capacitor, the first end of the fourteenth capacitor, the first end of the fifteenth capacitor and the first end of the sixteenth capacitor respectively, and a second end of the twelfth capacitor is connected to the second end of the thirteenth capacitor, the second end of the fourteenth capacitor, the second end of the fifteenth capacitor and the second end of the sixteenth capacitor respectively.
7. The controller operating voltage management system of claim 6, wherein the thirteenth capacitor and the fourteenth capacitor are aluminum electrolytic capacitors.
8. The controller operating voltage management system of claim 1, wherein the voltage monitoring circuit comprises: the third resistor, the fourth resistor, the seventeenth capacitor and the clamping diode;
the first end of the third resistor is connected with the first end of a sixteenth capacitor, the second end of the third resistor is respectively connected with the first end of a fourth resistor, the anode of a clamping diode and the first end of a seventeenth capacitor, the second end of the fourth resistor is connected with the ground, the cathode of the clamping diode is connected with a controller, and the second end of the seventeenth capacitor is connected with the ground.
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| CN112803386A (en) * | 2020-12-31 | 2021-05-14 | 大运汽车股份有限公司 | Lightning-proof and reverse-connection-proof circuit for power supply of vehicle control unit |
| CN114135411B (en) * | 2021-11-19 | 2023-09-22 | 中国北方发动机研究所(天津) | Circuit for ensuring conduction and emission of power line of diesel engine electric control system |
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| CN101958534A (en) * | 2009-07-15 | 2011-01-26 | 深圳富泰宏精密工业有限公司 | Electrostatic discharge module and mobile communication device with electrostatic discharge module |
| TW201301000A (en) * | 2011-06-29 | 2013-01-01 | Hon Hai Prec Ind Co Ltd | Server |
| CN205004743U (en) * | 2015-09-09 | 2016-01-27 | 深圳市七彩虹科技发展有限公司 | Dual lightning protection circuit of mainboard |
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| CN108803766A (en) | 2018-11-13 |
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Address after: B4-006, maker Plaza, 338 East Street, Huilongguan town, Changping District, Beijing 100096 Patentee after: Beijing Idriverplus Technology Co.,Ltd. Address before: B4-006, maker Plaza, 338 East Street, Huilongguan town, Changping District, Beijing 100096 Patentee before: Beijing Idriverplus Technology Co.,Ltd. |