GR8874 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 leading-edge blanking of the current sensing, internal slope...
GR8874 Key Features
- High-voltage (500V) startup circuit
- Standby 100mW solution
- 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 pensation