Alpha and Omega Semiconductor - New Power Factor Correction - 12 March 2013

Power Factor Correction is a vital part of increasing overall power grid efficiency.

The AOZ7111 is ideally suited for PFC applications that operate in critical conduction mode (CRM) such as switch mode power supplies (SMPS), LCD TVs, LED and ballast lighting, and AC-DC adapters.

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Datasheet

Technical Highlights

Combines an AC input voltage fault detection function with an internal closed-loop soft-start.
Secondary OVP function makes system more robust and reliable.
Zero current detection feature eliminates need for an auxiliary winding to reduce system cost.
Critical conduction mode PFC controller.
Control mode: voltage.
Topology: boost.
Frequency operation: variable.
Package: Halogen free and RoHS compliant SOIC-8.

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