FAN9611MX

Description
The FAN9611 interleaved dual Boundary−Conduction−Mode (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 offers inherent zero−current switching of the boost diodes, which permits the use of less expensive diodes without sacrificing efficiency. Furthermore, the input and output filters can be smaller due to ripple current cancellation and effective doubling of the switching frequency.
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 A Typical
• Works with DC and 50 Hz to 400 Hz AC Inputs Application
• 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