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.

Features

• PFC, system control and half-bridge driver in one IC

• Critical-conduction mode boost-type PFC

• Programmable PFC over-current protection

• Half Bridge Driver

• Half Bridge Over Current Protection

• Variable Frequency Oscillator

• Fixed internal 1.6us HO and LO deadtime

• Internal bootstrap MOSFET

• Internal 15.6V zener clamp diode on Vcc

• Micropower startup (250µA)

• Latch immunity and ESD protection

Typical Applications

• Isolated LED Drivers

• Power Supplies