NCP1655 Datasheet (ON Semiconductor) - Power Factor Controller

NCP1655, Power Factor Controller

Pin No.

Pin Name Function Description 1 FB Feedback Pin This pin receives a portion of the PFC output voltage for regulation and the Dynamic Response Enhancer (DRE) function which drastically speeds *up the loop response when the output voltage drops below 95.5% of the desired output l

Power Factor Controller for Compact and Robust Multimode Pre-Converters NCP1655 The NCP1655 is an innovative multimode power factor controller.

The circuit naturally transitions from one operation mode to another depending the switching period duration so that the efficiency is optimized over the line/load range.

In very light load conditions, the circuit can enter the soft SKIP mode for minimized losses.

Housed in a SO 9 package, the circuit further incorporates

NCP1655 Features

* necessary for robust and compact PFC stages, with few external components. Multimode Operation

* Multimode Operation for Optimized Operation over the Line/Load Range:

* Continuous Conduction Mode (CCM) in Heavy

* Load Conditions

* Frequency

* Clamped Critical Cond