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Description

The L6563S is a current-mode PFC controller operating in transition mode (TM). Coming with the same pin-out as its predecessor L6563, it offers improved performance and additional functions.

Features

■ Tracking boost function

■ Fast “bidirectional” input voltage feedforward (1/V2 correction)

■ Interface for cascaded converters PWM controller

■ Remote ON/OFF control

■ Accurate adjustable output overvoltage protection

■ Protection against feedback loop disconnection (latched shutdown)

■ Inductor saturation protection

■ Low (≤ 100 ?A) start-up current

■ 6 mA max. operating bias current

■ 1 (@ TJ = 25 °C) internal reference voltage

■ -600/+800 mA totem pole gate driver with active pull-down during UVLO

■ SO14 package

Applications

PFC pre-regulators for:

■ High-end AC-DC adapter/charger

■ Desktop PC, server, Web server

■ IEC61000-3-2 or JEITA-MITI compliant SMPS, in excess of 400 W