FAN6300A Overview
Key Features
- to enhance the performance of flyback converters
- FAN6300A is applied on quasiresonant flyback converters where maximum operating frequency is below 100 kHz
- FAN6300H is suitable for high-frequency operation (up to 190 kHz)
- 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
- FAN6300A/H controller also provides many protection functions
- Pulse-by-pulse current limiting ensures the fixed-peak current limit level, even when a short circuit occurs
- Once an open-circuit failure occurs in the feedback loop, the internal protection circuit disables PWM output immediately
- As long as VDD drops below the turn-off threshold voltage, the controller also disables PWM output
- The gate output is clamped at 18 V to protect the power MOS from high gate-source voltage conditions
