grenergy GR8874
Green Mode PWM Controller
| Part No. | GR8874 |
|---|---|
| Datasheet | GR8874 Download |
| Manufacturer |  grenergy |
| Description | Green Mode PWM Controller |
| Buy | Stock & Price |
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 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 Ordering and Marking Information GR8874
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 leading-edge blanking of the current sensing, internal slope compensation and cycle-by-cycle peak current limiting.
