AP3302 Datasheet | Diodes Incorporated

Description QUASI-RESONANT PWM CONTROLLER Pin Assignments The AP3302 is a Peak-Current control, Quasi-Resonant (QR) PWM controller which is optimized for high performance, low standby power and cost effective offline flyback converters. At no load or light load, the IC will enter the burst mode to minimize standby power consumption. The minimum switching frequency (about 22k Hz) is set to avoid the audible noise. When the load increases, the IC will enter valley lock QR mode with frequency foldback to improve system efficiency and EMI performance. The maximum switching frequency (about 120k Hz) is set to clamp the QR frequency to reduce switching power loss. Furthermore, the frequency dithering function is built in to reduce EMI emission. Internal piecewise linear line pensation ensures constant output power limit over entire universal line voltage range. prehensive protection features are included, such as brown out protection, cycle-by-cycle current limit (OCP), VCC...