GR8876A - grenergy

GR8876A Green-Mode PWM Controller

The GR8876A is a highly-integrated, low startup current, current mode PWM controller with green-mode function and high-voltage start up circuit. A high-voltage current source supplies the start up current and the traditional start-up resistor can be saved in order to reduce the power dissipation due to start-up resistor. The controller also includes the lea.

Features

High-voltage (500V) startup circuit Current mode PWM Very low startup current (<20uA) Under-voltage lockout (UVLO) Non-audible-noise green-mode control Programmable switching frequency Cycle-by-cycle peak current limiting Internal leading-edge blanking Internal slope compensation Internal 4ms soft start (Fs = 65KHz) Gate output voltage clamp Soft driving for reducing EMI Over-voltage protection (OVP) on Vcc pin Over-load protection (OLP) 500mA driving capability Applications Open-frame SMPS
● Switching AC/DC adapter Description The GR8876A is a highly-integrated, low startup current, curre.