ACT511 controller equivalent, quasi-resonant pwm controller.
* Quasi-Resonant Operation
* Adjustable up to 75kHz Switching Frequency
* Accurate OCP/OLP Protection
* Integrated Patented Frequency Foldback
Technique
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up to 60 Watts.
Figure 1:
Simplified Application Circuit
APPLICATIONS
* AC/DC Adaptors/Chargers for Cell Phones,
Co.
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. Very low standby power, good dyn.
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