The invention discloses an automobile camera power supply circuit. The power supply circuit comprises a power input, an enable signal ENABLE-1, a switching circuit, a current limiting circuit, a short-circuit protection circuit and a power output; the switch circuit is connected to the power supply output module, and when the enable signal ENABLE-1 is in a high level, the switch circuit is switched on to supply power to the camera; the current limiting circuit is used for controlling the output current to be smaller than a set value; and the short-circuit protection circuit is used for closing power supply output to play a short-circuit protection role. The power supply circuit has over-current protection and short-circuit protection functions and is low in cost.
本发明公开了一种汽车摄像头供电电路,包括:电源输入、使能信号ENABLE‑1、开关电路、限流电路、短路保护电路和电源输出;所述开关电路连接于所述电源输出模块,当所述使能信号ENABLE‑1置于高电平时,所述开关电路导通,为摄像头供电;所述限流电路用于控制输出电流小于设定值;所述短路保护电路用于关闭电源输出,起到短路保护作用。本申请的供电电路具有过流保护和短路保护功能,并且成本低廉。
Automobile camera power supply circuit
一种汽车摄像头供电电路
2021-07-09
Patent
Electronic Resource
Chinese
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