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AP3301 - QUASI-RESONANT PWM CONTROLLER

General Description

The AP3301 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.

Key Features

  • are included, such as brown out protection, cycle-by-cycle current limit (OCP), VCC Over Voltage Protection (VOVP), Secondary-Side Output OVP (SOVP), internal OTP, Over Load Protection (OLP) and pins’ fault protection. (Top View) Pin 1 Mark GND 1 FB 2 DEM 3 6 GATE 5 VCC 4 SENSE SOT26.

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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 AP3301 QUASI-RESONANT PWM CONTROLLER Description Pin Assignments The AP3301 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 20kHz) is set to avoid the audible noise. At medium load, the IC will enter valley lock QR mode with frequency foldback to improve system efficiency and EMI performance. The maximum switching frequency (about 120kHz) is set to clamp the QR frequency to improve efficiency.