Design of a High Precision Undervoltage Protection Circuit Based on High Voltage BCD Technology

Based on the high voltage BCD technology, an undervoltage protection circuit is designed and implemented. The circuit uses the reference core to realize the detection function of the power supply voltage. It has the characteristics of high accuracy, adjustable detection and adjustable hysteresis window. The circuit is simple in structure and easy to integrate. It can be widely used in high voltage gate drive circuit.