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Boundary-Mode PFC Controller Delivers High Efficiency

Tue, 02/17/2009 - 4:44am

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Fairchild FAN9612Performing in AC/DC power supplies, Fairchild Semiconductor’s FAN9612 boundary-conduction mode (BCM) power factor correction (PFC) controller provides >96% power conversion efficiency. The 16-lead SOIC-packaged component interleaves and keeps 2 power stages at 180° out of phase timing under all operating conditions. The device offers automatic phase disable to operate with only 1 channel under light-load conditions; valley switching technology, min. restart timer frequency, and max. switching frequency clamp. The controller includes overcurrent and power-limit protection for each channel, 2-level output overvoltage protection (OVP), input brownout protection and line OVP, programmable closed-loop soft-start, and a input voltage feed-forward function. Applications include digital TVs, desktop and entry-level server computers, front-end telecom systems, and industrial power systems rated from 100 W to 1,000 W. Pricing is $1.30 each in 1,000 quantities.

Fairchild Semiconductor
800-341-0392 ext. 8761, www.fairchildsemi.com

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