PFC Controller Delivers Over 96 Percent Efficiency in Green Power Supplies
Fri, 03/27/2009 - 7:42am
Fairchild Semiconductor brings power supply designers a boundary-conduction mode (BCM) interleaving power factor correction (PFC) controller that provides over 96 percent power conversion efficiency for AC/DC power supplies. Applications include power supplies for digital TVs, desktop and entry-level server computers, front-end telecom systems and industrial power systems rated from 100W to 1000 W. Interleaving extends the power range of BCM control while ripple current cancellation minimizes high peak currents. By interleaving and keeping two power stages precisely at 180° out of phase timing under all operating conditions, the FAN9612 lowers conduction losses. These energy-conservation benefits are integral in helping customers meet the latest ENERGY STAR® and Climate Savers Computing Initiative requirements.