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Motor drives
Welders
Battery chargers
Power supplies
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 con-
trols 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 capa-
bility to the system. The IR1110 is based on advanced
low power design so it can utilize the SCR snubber
derived power supply.
Package
64 Lead MQFP
System Block Diagram
Snubber and
Snubber derived
power supply
IR1110
and
Peripheral
Components
(Optional)
+
AC
3-Phase
Input
(Optional)
-