FAN6300AMY

The FAN6300AMY is a highly integrated quasi-resonant current-mode PWM Controller provides several features to enhance the performance of flyback converters. It is applied on quasi-resonant flyback converters where maximum operating frequency is below 100kHz. A built-in HV startup circuit can provide more startup current to reduce the startup time of the controller. Once the VDD voltage exceeds the turn-on threshold voltage, the HV startup function is disabled immediately to reduce power consumption. An internal valley voltage detector ensures power system operates at quasi-resonant operation over a wide-range of line voltage and any load conditions, as well as reducing switching loss to minimize switching voltage on drain of power MOSFET. To minimize standby power consumption and light-load efficiency, a proprietary green-mode function provides off-time modulation to decrease switching frequency and perform extended valley voltage switching to keep to a minimum switching voltage.

• High-voltage startup
• Quasi-resonant operation
• Cycle-by-cycle current limiting
• Peak-current-mode control
• Leading-edge blanking (LEB)
• Internal minimum tOFF
• Internal 5ms soft-start
• Over power compensation
• GATE Output maximum voltage
• Auto-recovery over-current protection(FB pin)
• Auto-recovery open-loop protection(FB pin)
• VDD pin and output voltage (DET pin) OVP latched

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