RM6222D integrates a dedicated current mode PWM controller and high-voltage power MOSFET, suitable for a wide Voltage 12W, 18W or less single voltage input switching power supply. RM6222 with soft start function. In order to Ensure the normal operation of special chips designed for a variety of faults with a series of perfect protection restore function Measures, including the VDD voltage lockout protection (UVLO), overvoltage protection (OVP) and clamp-by-cycle current Limit (OCP), overload protection (OLP) and totem-pole output to drive high clamp and so on. Chip built-in frequency jitter Moving and totem pole gate drive technology can be easily soft for good EMI performance.