Protection circuit, circuit and operation method thereof, corresponding vehicle lamp and vehicle

The present invention provides a protection circuit for ground short-circuit protection, and the circuit comprises a high-conduction circuit for controlling power supply to a functional circuit havinga boosting function; a charging sub-circuit which is used for controlling the high-conduction circuit to be connected or disconnected based on the input voltage of the input power supply of the protection circuit and the output voltage from the functional circuit; and an energy storage circuit for storing power from the input power supply to provide power to the functional circuit. 本公开提供了一种用于对地短接保护的保护电路，所述电路包括：高导通电路，用于控制功能电路的电力供给，其中所述功能电路具有升压功能；以及充电子电路，用于基于所述保护电路的输入电源的输入电压和来自功能电路的输出电压，控制所述高导通电路导通或断开；以及储能电路，用于存储来自所述输入电源的电力以针对所述功能电路提供电力。