Feb 28, 2011 IR1155S PROGRAMMABLE FREQUENCY, ONE CYCLE CONTROL PFC IC Features • PFC IC with IR proprietary “One Cycle Control” • Continuous conduction mode boost type PFC • Programmable switching frequency (48k-200kHz) • Average current mode control • Output overvoltage protection • Open loop protection • Cycle by cycle peak current limit • VCC under voltage lockout • Programmable soft start • Micropower startup • User initiated micropower “Sleep Mode” • OVP/EN pin internal filtering for higher noise immunity • 1.
5A peak gate drive • Latch immunity and ESD protection Description The μPFC IR1155 power factor correction IC, based on IR proprietary "One Cycle Control" (OCC) technique, provi...

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