FAN6862R/L is a highly integrated green-mode PWM controller from Fairchild Semiconductor Corporation. This product features low startup current, low operating current, peak current mode operation, cycle-by-cycle current limiting, PWM frequency continuously decreasing under light loads, burst mode, VDD over-voltage protection, constant output power limit, over-temperature protection, fixed PWM frequency (65KHz), frequency hopping, feedback open-loop protection, 56ms delay, soft-start time 5ms, 400mA driving capability. Suitable for various general-purpose switch-mode power supplies and flyback power converters, such as power adapters, open-frame SMPS, SMPS with surge-current output (such as printers, scanners and motor drivers).
The FAN6862R/L is a highly integrated PWM controller designed to enhance the performance of flyback converters. It features proprietary green-mode functions that minimize standby power consumption by modulating off-time under light loads and entering burst mode at zero load, helping meet international power conservation requirements.
The device integrates several protection mechanisms including Vpp over-voltage protection (OVP), constant output power limit across the full AC input range, and feedback open-loop protection with a 56ms delay. It also includes an external NTC thermistor interface for over-temperature protection (OTP) and operates with a fixed PWM frequency of 65kHz that utilizes frequency hopping to reduce EMI emissions.
| Startup Current | 8A |
|---|---|
| Operating Supply Current (Green Mode) | 3mA |
| PWM Frequency | 65KHz |
| Operating Junction Temperature Range | -40 to +150 °C |
| Storage Temperature Range | -55 to +150 °C |
The device has a low startup current of 8A.
It uses off-time modulation to continuously decrease switching frequency and enters burst mode at zero load.
The gate output is clamped at 18V to protect the external MOSFET.