FAN9611

FAN9611 — Interleaved Dual BCM PFC Controllers February 2013 FAN9611 Interleaved Dual BCM PFC Controllers Features  Sync-Lock™ Interleaving Technology for 180° Out-of-Phase Synchronization Under All Conditions  Automatic Phase Disable at Light Load  Dead-Phase Detect Protection  2.0 A Sink, 1.0 A Source, High-Current Gate Drivers  High Power Factor, Low Total Harmonic Distortion  Voltage-Mode Control with (VIN)2 Feedforward  Closed-Loop Soft-Start with User-Programmable Soft-Start Time for Reduced Overshoot  Minimum Restart Frequency to Avoid Audible Noise  Maximum Switching Frequency Clamp  Brownout Protection with Soft Recovery  Non-Latching OVP on FB Pin and Latching Second- Level Protection on OVP Pin  Open-Feedback Protection  Power-Limit and Current Protection for Each Phase  Low Startup Current of 80 µA Typical  Works with DC and 50 Hz to 400 Hz AC Inputs Applications  100-1000 W AC-DC Power Supplies  Large Screen LCD-TV, PDP-TV, RP-TV Power  High-Efficiency Desktop and Server Power Supplies  Networking and Telecom Power Supplies  Solar Micro Inverters Description The FAN9611 interleaved dual Boundary-ConductionMode (BCM) Power-Factor-Correction (PFC) controller operates two parallel-connected boost power trains 180° out of phase. Interleaving extends the maximum practical power level of the control technique from about 300 W to greater than 800 W. Unlike the continuous conduction mode (CCM) technique often used at higher power levels, BCM offer...