描述

The DIO8355 is a quasi−resonant flyback controller which provides high-performance voltage regulation using an optically coupled feedback signal from a secondary-side voltage regulator, targeting at off−line PD Constant Voltage (CV) power converters applications. With HV startup circuit, the DIO8355 can enable low standby power consumption. Proprietary valley lockout circuitry is optimized for stable valley switching. As the load decreases further, the DIO8355 enters quiet mode to regulate the power delivery, then minimizing acoustic noise. This chip adopts special design to achieve quick start up and reliable protection for safety requirement.