Overcurrent protection circuit with self-recovery function

The invention belongs to the technical field of power management, and in particular relates to an overcurrent protection circuit with a self-recovery function. The invention provides a self-recovery overcurrent protection mechanism mainly comprising a loop portion, an overcurrent detection comparator, a charging-discharging control signal generation portion, a charging-discharging portion, a system overcurrent turn-off timing portion and a COMP end discharging portion. According to the circuit, a system can automatically enter turn-off timing when the system is in various overload conditions such as overcurrent and short circuit, and can automatically enter soft start after the system turn-off timing is completed without additional soft start circuits and pins, so that application cost and whole chip power consumption are saved, and reliability of the power system is enhanced. 本发明属于电源管理技术领域，具体的说是涉及种具有自恢复功能的过流保护电路。本发明提出了种自恢复过流保护机制，主要由环路部分，过流检测比较器，充放电控制信号产生部分，充放电部分，系统过流关断计时部分，COMP端放电部分构成，可以在系统发生过流、短路等各种过载情况后，系统