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