The highly integrated SG6932 is designed for power supplies with boost PFC and forward PWM. It requires very few external components to achieve green-mode operation and versatile protections / compensation. It is available in 16-pin DIP and SOP packages. The patented interleave-switching feature synchronizes the PFC and PWM stages and reduces switching noise. At light load, the switching frequency is continuously decreased to reduce power consumption. For PFC stage, the proprietary multi-vector control scheme provides a fast transient response in a low-bandwidth PFC loop, in which the overshoot and undershoot of the PFC voltage are clamped. If the feedback loop is broken, SG6932 shuts off to prevent extra-high voltage on output.