Description
The ACT511 is a high performance peak current mode PWM controller.
ACT511 applies ActiveQRTM and frequency foldback technique to reduce EMI and improve efficiency.
ACT511’s maximum switching frequency is set at 90kHz.
Features
- Quasi-Resonant Operation.
- Adjustable up to 75kHz Switching Frequency.
- Accurate OCP/OLP Protection.
- Integrated Patented Frequency Foldback
Technique.
- Integrated Patented Line and Primary
Inductance Compensation.
- Built-in Soft-Start Circuit.
- Line Under-Voltage, Thermal, Output Over-
voltage, Output Short Protections.
- Current Sense Resistor Short Protection.
- Transformer Winding Short Protection.
- 100mW Standby.