NCP1207A Datasheet (ON Semiconductor)

NCP1207A, PWM Controller

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DATA SHEET www.onsemi.com PWM Current-Mode Controller for Free Running Quasi-Resonant Operation NCP1207A, NCP1207B The NCP1207A/B combines a true current mode modulator and a demagnetization detector to ensure full borderline/critical Conduction Mode in any load/line conditions and minimum drain voltage switching (Quasi Resonant operation).

Due to its inherent skip cycle capability, the controller enters burst mode as soon as the power demand falls below a predetermined level.

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NCP1207A Features

* Free

* Running Borderline/Critical Mode Quasi

* Resonant Operation

* Current

* Mode with Adjustable Skip

* Cycle Capability

* No Auxiliary Winding VCC Operation

* Auto

* Recovery Overcurrent Protection

* Latching Overvoltage Pro