AN3009 Datasheet, PDF (1/36 Pages) M/A-COM Technology Solutions, Inc. – S-Parameter S2P File Format

AN3009
Application note
How to design a transition mode PFC pre-regulator using the L6564
Introduction
The transition mode (TM) technique is widely used for power factor correction in low and
medium power applications, such as lamp ballasts, high-end adapters, flatscreen TVs,
monitors and PC power supplies, and all switched-mode power supplies that must meet
harmonics reduction regulations.
The L6564 is the latest proposal from STMicroelectronics for these types of applications,
which may require a low-cost power factor correction solution.
The L6564 is a current-mode power factor correction (PFC) controller that operates in
transition mode and embeds all the functions needed to control and properly protect a high-
performance PFC converter into a very compact 10-pin SSOP-10 package.
Figure 1. L6564 PFC controller in an SMPS architecture

6036
9'&
&LQ
3)&
&219
'&'&
(0,
ILOWHU
3)&FRQWUROOHUV 
/
!-V
February 2011
Doc ID 16032 Rev 4
1/36
www.st.com