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IRS2580DSPbF
“COMBO8” PFC + HALF-BRIDGE BALLAST IC
Features
• PFC, ballast control and half-bridge driver in one IC
• Critical-conduction mode boost-type PFC
• Internal VBUS sensing and regulation
• Internal PFC loop compensation
• Programmable PFC over-current
• Ignition voltage regulation (current or voltage control)
• Half-bridge non-ZVS protection
• Half-bridge over-current protection using low-side MOSFET Rds
(on)
• Programmable preheat time
• Programmable preheat frequency
• Programmable ignition ramp time
• Programmable run frequency
• Voltage-controlled oscillator (VCO) analog input
• Latched EOL window comparator on VCC
• Internal EOL fault timer
• Fixed dead-time (1.7usec typ.)
• DC bus under-voltage reset
• Lamp insert auto-restart
• Micro-power start-up current
• Under-voltage lock-out mode
• Small 8-pin SOIC package
• Lead-free
Typical Application
• Electronic Ballast
Product Summary
Topology Boost + Half-Bridge
V
OFFSET
600 V
V
OUT
VCC
I
O+
& I
O-
(typical) 180 mA & 260 mA
Dead-time 1.7us
Package Options
Typical Application Block Diagram
