GR8874
Features
- High-voltage (500V) startup circuit
- Standby 100m W solution
- Current mode PWM
- Very low startup current (<20u A)
- 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 pensation
- 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)
- 500m A driving capability
Ordering and Marking Information
Applications
- Open-frame SMPS
- Switching AC/DC adapter
Description
The GR8874 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...
