ucc28700: Constant-Voltage, Constant-Current PWM With Primary-Side Regulation

The UCC28700 family of flyback power supply controllers provides Constant-Voltage (CV) and Constant-Current (CC) output regulation without the use of an optical coupler. The devices process information from the primary power switch and an auxiliary flyback winding for precise control of output voltage and current. Low start-up current, dynamically-controlled operating states and a tailored modulation profile support very low stand-by power without sacrificing start-up time or output transient response.