The secondary side regulation PWM controller and switcher product category consist of generations of PWM controllers for Flyback power topology with improvements to meet target applications. Evolutions of crucial features include various PWM operation modes - Discontinues Conduction Mode (DCM), Quasi-Resonant (QR), Continuous Conduction Mode (CCM), QR+CCM, Active Clamp Flyback (ACF), high-voltage start-up circuitry integration, low standby power (<30m Watt, 5V standby output), peak load, wide output range support for Quick Chargers (3.3V~21V for PD3.0 PPS).
