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AP3303 - QUASI-RESONANT PWM CONTROLLER

Description

The AP3303 is a peak-current control, Quasi-Resonant (QR) PWM controller which is specially designed for offline power supply that requires ultra-low standby power, high-power density and comprehensive 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. Combined with Diodes Incorporated’s synchronous controller APR347, the AP3303 system can achieve the higher power conversion efficiency and the better thermal performance. AP3303 QUASI-.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NEW PRODUCT Description The AP3303 is a peak-current control, Quasi-Resonant (QR) PWM controller which is specially designed for offline power supply that requires ultra-low standby power, high-power density and comprehensive protection. It can coordinate with secondary side USBPD or quick charger controller which can 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: 24kHz) 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: 120kHz) is set to clamp the QR frequency to reduce switching power loss.