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IRS2548DSPBF

SMPS/LED DRIVER PFC + HALF-BRIDGE CONTROL IC

International Rectifier 

IRS2548D

Description

The IRS2548D is a fully integrated, fully protected 600V LED or switched mode power supply control IC with

integrated PFC control for a Boost pre-regulator. The IRS2548D is based on the popular IRS2168D

electronic ballast control IC re-designed for use in LED driver or half-bridge power supply applications. The

PFC circuitry operates in critical conduction mode and provides high PF, low THD and DC bus regulation.

The IRS2548D features include programmable minimum run frequency and adjustable oscillator frequency

that can be driven by an opto isolator or other feedback circuit in a feedback loop for frequency modulation in

resonant systems. The IRS2548D also includes PFC over-voltage and over-current protection, half bridge

over current protection and a logic level enable input that can be used for PWM dimming in LED drivers or

general burst mode operation.

www.irf.com

© 2011 International Rectifier

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