HT7L5820/HT7L5821 Integrated PFC and Quasi-Resonant
Current Mode PWM Controller
Features
• Integrated Transition Mode (TM) PFC controller and Quasi-Resonant (QR) flyback controller
• Wide AC input range from 85VAC to 265VAC • Integrated 650V JFET quick high
voltage start-up • Integrated THD PFC stage optimiser • Brown-out and brown-in protection • Internal accurate feedback reference
voltage: ±2% • Internal 9.
6ms PWM soft-start • High/Low line over-power compensation • FB pin protection (Auto Recovery)
♦♦ Over-power and overload protection ♦♦ Short-circuit protection ♦♦ Open-loop protection • External triggering and adjustabe over-temperature protection – RT Pin • VCC pin OVP – l...