L4981A This new PFC offers the possibility to work at fixed frequency ( L4981A ) or modulated frequency (L4981B) optimizing the size of the in-. November 2001. . Note AN628 Designing A High Power Factor Switching Preregulator With The L4981 Continuous Mode  and the corresponding Datasheet L4981A /B Power This new PFC offers the alternative of synchronization working at fixed frequency ( L4981A ), or working in mod- ulated frequency (L4981B) to optimize the size of 1/3. AN832. APPLICATION NOTE. November 2003. Devices Description. In most of SMPS using power factor correction, the convertion is accomplished with a 1/18. AN1606. APPLICATION NOTE. November 2002. L4981 PFC Controller. This application features the L4981 PFC controller. It is a high performance device ...
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