AN4077 Datasheet, PDF (1/33 Pages) STMicroelectronics – 100 W transition-mode PFC pre-regulator with the new L6564H

AN4077
Application note
100 W transition-mode PFC pre-regulator with the new L6564H
By Federico Levati
Introduction
This application note describes a demonstration board based on the new transition-mode
PFC controller L6564H and presents the results of its bench evaluation. The board
implements a 100 W, wide-range mains input, PFC pre-conditioner suitable for ballast,
adapters, flat screen displays, and all SMPS having to meet the IEC61000-3-2 or the JEITA-
MITI standards.
The L6564H is a current-mode PFC controller operating in transition mode (TM) which
embeds the same features existing in the L6564 with the addition of a high-voltage startup
source. These functions make the IC especially suitable for applications that must be
compliant with energy saving regulations and where the PFC pre-regulator works as the
master stage.
Figure 1. EVL6564H-100W: L6564H 100 W TM PFC demonstration board
September 2012
Doc ID 022997 Rev 1
1/33
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