Description
The IR1110 is a high performance analog IC designed to control ramp rate and voltage of the DC bus from either single or three phase AC line voltage input. It controls a SCR half bridge and provides robust ride through capability in event of transient loss of line, and DC bus regulation with eternal reference input. Comprehensive line status fault output including 1/3 phase loss and high or low line fault provides versatile line diagnostic capability to the system.

FEATUREs
•Self-contained soft charging of DC bus capacitor
•DC bus voltage regulation
•3-phase or 1-phase AC input
•Applicable to 115/230/380/460/575V AC input
•Drives SCR phase controlled half bridge
•Programmable ramp rate
•Protection against DC bus short circuit
•Fast power dip ride through with automatic ramp back
•Selectable shutdown on single phase loss
•1-phase and 3-phase loss fault output
•Insensitive to phase rotation
•High line or low line fault output
•Low power consumption
•Integrated watchdog function for each phase
•64-pin MQFP package

Typical Application
•Motor drives
•Welders
•Battery chargers
•Power supplies