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 Product Summary Topology Boost + Half-Bridge VOFFSET 600 V VOUT VCC IO+ & IO- (typical) Dead-time 180 mA & 260 mA 1.7us Package Options Typical Application • Electronic Ballast Typical Application Block Diagram www.irf.com © 2011 International Rectifier