AP39303 Datasheet | Diodes Incorporated

NEW PRODUCT A P39303 Description The AP39303 is a highly integrated power switcher with a built-in Quasi-Resonant (QR) PWM controller and a 700V high performance power MOSFET. AP39303 is specially designed for offline power supply that requires ultra-low standby power, high-power density and prehensive protection. Coordinating with secondary side USBPD or quick charger controller to provide a Flyback charger solution. At no load or light load, the IC will enter the burst mode to minimize standby power consumption. The minimum switching frequency (typical: 24k Hz) is set to avoid the audible noise. When the load increases, the IC will enter QR mode with frequency foldback to improve system efficiency and EMI performance. The maximum switching frequency (typical: 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. The AP39303 provides an inner high-voltage start-up function through HV pin which can reduce the standby loss. Moreover, The AP39303 integrates a VCC LDO circuitry, allowing the LDO to regulate the wide range VCC_IN to an acceptable value. This makes the AP39303 to be a good choice in wide range output voltage application. 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, VCC Over Voltage Protection (VOVP), Secondary-side Output OVP (SOVP) and UVP (SUVP), internal OTP, Over Load Protection (OLP) and pins’ fault protection. bined with Diodes Incorporated’s synchronous controller APR347, AP39303 system can achieve the higher power conversion efficiency and the better thermal performance. Features - Quasi-Resonant Operation under all Line and Load Condition - Peak Current Mode Control @ DCM - High-Voltage Startup - Built-In 700V High Performance Power MOSFET - Embedded VCC...