Data Brief

January 2007

Rev 1

1/5

For further information contact your local STMicroelectronics sales office.

EVAL6563-80W

L6563 80W High performanceTM PFC with active

tracking boost function

General description

L6563 is a current-mode PFC controller operating in Transition Mode (TM). Based on the

core of a standard TM PFC controller, it offers improved performance and additional

functions, such as active tracking boost function. In some applications it may be

advantageous to regulate the output voltage of the PFC pre-regulator so that it tracks the

RMS input voltage rather than at a fixed value like in conventional boost pre-regulators. This

is commonly referred to as "tracking boost" or "follower boost" approach.

With the L6563 this can be realized by connecting a resistor between the TBO pin (pin 6)

and ground. The board implements a 80 W, wide-range mains input, PFC pre-regulator.

Evaluation board

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