Interleaved Dual BCM PFC Controllers
FAN9611 — Interleaved Dual BCM PFC Controllers
February 2013
FAN9611 Interleaved Dual BCM PFC Controllers
Features
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Description
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...
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