IR1110 Datasheet, PDF (1/32 Pages) International Rectifier – SOFT START CONTROLLER IC

ADVANCE INFORMATION Data Sheet No. PD60164A
IR1110
SOFT START CONTROLLER IC
Features
Product Summary
• 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
V_DDS/V_SS
I_SS/I_DD
+/- 5V
+/- 5mA
DC bus registration
response time
100msec (typ.)
Min. DC bus regulation 35% of V_DCMAX
voltage with capacitive load
• Insensitive to phase rotation
• High line or low line fault output
• Low power consumption
Programmable
DC bus ramp time
100msec to
330msec (typ.)
• Integrated watchdog function for each phase
• 64-pin MQFP package
Description
The IR1110 is a high performance analog IC designed
to control ramp rate and voltage of the DC bus from
Typical Application
• Motor drives
• Welders
• Battery chargers
• Power supplies
either single or three phase AC line voltage input. It con- _Package
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.
64 Lead MQFP
System Block Diagram
Snubber and
Snubber derived
power supply
IR1110
and
Peripheral
Components
AC
3-Phase
Input
(Optional)
+
(Optional)
-