Electric leakage protection circuit and control method thereof, and driving circuit

• Main Authors: LIN XINGYU, YE MEIPAN
• Format: Patent
• Language: Chinese; English
• Published: 20.11.2020
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an electric leakage protection circuit. The circuit comprises a leakage current control module and an electric leakage judgment module, wherein the leakage current control module is used for generating a sampling control signal and an electric leakage control signal according to a bus voltage and a first reference voltage, and generating a leakage current according to the electric leakage control signal, and an expected value is reached by controlling a slope of the leakage current; and the electric leakage judgment module is connected with the leakage current control module and is used for judging whether an electric leakage phenomenon exists or not according to the sampling control signal and a bus voltage. A problem of an electric shock caused by mistaken contactof a human body in a load mounting process can be avoided so that safety in the load dismounting and mounting process is improved. 公开了一种漏电保护电路，包括：漏电流控制模块，用于根据母线电压以及第一参考电压产生采样控制信号以及漏电控制信号，并根据所述漏电控制信号产生漏电流，其中，通过控制漏电流的斜率以达到期望值；