STMicroelectronics 19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6599A EVL6599A-90WADP EVL6599A-90WADP Data Sheet

December 2010

Doc ID 17230 Rev 1

1/31

19 V - 90 W adapter with PFC for laptop computers

using the L6563H and L6599A

This application note describes the performance of a 90 W, wide-range mains, power-factor-
corrected, AC-DC adapter demonstration board. Its electrical specification is tailored on a 
typical hi-end portable computer power adapter. 

The architecture is based on a two-stage approach; a front-end PFC pre-regulator based on 
the L6563H TM PFC controller and a downstream LLC resonant half-bridge converter using 
the new L6599A resonant controller. Thanks to the chipset used, the main aspects of this 
design are very high efficiency, compliance with ENERGY STAR

®

 Eligibility Criteria (EPA 

rev. 2.0 EPS), and very low input consumption at no-load (<0.3 W).