This document describes a low-cost green-mode PWM controller for flyback converters. It features low start-up current, low operating current, support for the 'Blue Angel' standard, constant output power limit, and more.
The SG6848 is a highly-integrated PWM controller designed for flyback power converters and switching mode power supplies. It features a proprietary green-mode function that modulates the switching frequency to reduce standby power consumption, helping meet strict power conservation requirements like the Blue Angel Standard. The device operates with a low start-up current of 5uA and a low operating current of 2mA.
| Start-up Current | 5uA |
|---|---|
| Operating Current | 2mA |
| Operating Junction Temperature | 150 ℃ |
| Output Clamp Voltage | 15V |
| Universal Input Range | 90VAC to 264VAC |
| Operating Ambient Temperature | -30 to +85 ℃ |
| Maximum Duty Cycle | 80 % |
The typical oscillator frequency is 70kHz when a 95kΩ resistor is connected to the RI pin.
The SG6848 is available in 8-pin DIP and 6-pin SOT-26 packages.
Yes, the controller supports the Blue Angel Standard for power conservation.