ACT411 Rev 4, 27-Feb-14
ActivePSRTM Quasi-Resonant PWM Controller
FEATURES
• Patented Primary Side Regulation
Technolog...
ACT411 Rev 4, 27-Feb-14
ActivePSRTM Quasi-Resonant PWM Controller
FEATURES
Patented Primary Side Regulation
Technology
Quasi-Resonant Operation
Adjustable up to 120kHz Switching
Frequency
+/-5% Output
Voltage Regulation
Accurate OCP/OLP Protection
Integrated Output Cord Compensation
Integrated 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 Short Winding Protection
Less than 100mW Standby Power
Complies with Global Energy Efficiency and
CEC Average Efficiency Standards
Tiny SOT23-6 Packages
and overload conditions, it would enter auto restart mode including cycle-by-cycle current limiting.
ACT411 is to achieve no overshoot and very short rise time even with big capacitive load (4000µF) with the built-in fast and soft start process, .
The Quasi-Resonant (QR) operation mode can effec...
