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 lead.
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
Applications
Open-frame SMPS
●
Switching AC/DC adapter
Description
The GR8874 is a highly-integrated, low .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | GR8875 |
grenergy |
Green-Mode PWM Controller | |
2 | GR8875N |
grenergy |
Green-Mode PWM Controller | |
3 | GR8876 |
grenergy |
Green-Mode PWM Controller | |
4 | GR8876A |
grenergy |
Green-Mode PWM Controller | |
5 | GR881 |
Greenwich Instruments |
NON Voltage Memory | |
6 | GR8818A |
grenergy |
Primary Feedback PWM Controller | |
7 | GR8830 |
Grenergy |
Green-Mode PWM Controller below 100mW Standby Power | |
8 | GR8833R |
Grenergy |
Green-Mode PWM Controller | |
9 | GR8835 |
Grenergy |
Green-Mode PWM Controller | |
10 | GR8835A |
Grenergy |
Green-Mode PWM Controller | |
11 | GR8836 |
Grenergy |
Green-Mode PWM Controller | |
12 | GR8837 |
Grenergy |
Green-Mode PWM Controller |