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Power Factor Correction Using IR1155 CCM PFC IC

Authored on: Aug 1, 2011 by Helen Ding, Ramanan Natarajan

Technical Paper / Application Note

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The IR1155 IC is a fixed frequency PFC IC designed to operate in continuous conduction mode Boost converters with average current mode control. The IC is packed with advanced features including programmable switching frequency, programmable soft-start, micro-power startup current, user initiated micro-power Sleep mode for compliance with stand-by energy standards and ultra low bias currents for sensing pins. The switching frequency can be programmed from 48KHz to 200Khz. It has very low gate jitter, thus eliminating audible noise in PFC magnetics. This application note provides an overview of the functionality of IR1155 and demonstrates the design of a universal input 300W AC-DC Boost PFC Converter.
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