The invention discloses a protection circuit, electronic equipment and a vehicle, relates to the technical field of automobiles, and aims to solve the problem of load damage caused by abnormal power supply between power loads. The protection circuit comprises a switching circuit, a comparison latch circuit and a current detection circuit. The first end of the switching circuit is connected with a power supply, and the second end of the switching circuit is connected with a load. The current detection circuit is used for collecting current between the switching circuit and the load, generating detection voltage according to the current and outputting the detection voltage. The second end of the comparison latch circuit is connected with the third end of the switching circuit. And the comparison latch circuit is used for acquiring the detection voltage and the first reference voltage, and continuously sending a turn-off control signal to the switching circuit when the detection voltage is greater than the first reference voltage, so as to control the continuous turn-off of the first end and the second end of the switching circuit.
本发明公开了一种保护电路、电子设备、车辆,涉及汽车技术领域,旨在避免电源负载之间供电异常导致负载受损的问题。保护电路包括开关电路、比较锁存电路和电流检测电路。开关电路的第一端与电源连接,开关电路的第二端与负载连接。电流检测电路用于采集开关电路与负载之间的电流,以及根据电流生成检测电压,并输出检测电压。比较锁存电路的第二端与开关电路的第三端连接。比较锁存电路用于获取检测电压和第一参考电压,并在检测电压大于第一参考电压时,持续向开关电路发出关断控制信号,以控制开关电路的第一端和第二端持续关断。
PROTECTION CIRCUIT, ELECTRONIC APPARATUS, AND VEHICLE
保护电路、电子设备、车辆
25.04.2025
Patent
Elektronische Ressource
Chinesisch
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