FAN6300AMY

FAIRCHILD SEMICONDUCTOR  FAN6300AMY  控制器, PWM准谐振, 25V-10V电源, 100 kHz, SOIC-8

The 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.

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High-voltage startup

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Quasi-resonant operation

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Cycle-by-cycle current limiting

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Peak-current-mode control

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Leading-edge blanking LEB

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Internal minimum tOFF

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Internal 5ms soft-start

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Over power compensation

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GATE Output maximum voltage

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Auto-recovery over-current protectionFB pin

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Auto-recovery open-loop protectionFB pin

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VDD pin and output voltage DET pin OVP latched