器件名称:
FAN9611
功能描述:
Interleaved Dual BCM PFC Controllers
文件大小:
1313.89KB 共35页
简 介:
FAN9611 / FAN9612 — Interleaved Dual BCM PFC Controllers October 2009 FAN9611 / FAN9612 Interleaved Dual BCM PFC Controllers Features Sync-Lock Interleaving Technology for 180° Outof-Phase Synchronization Under All Conditions Automatic Phase Disable at Light Load Dead-Phase Detect Protection 2.0A Sink, 1.0A Source, High-Current Gate Drivers High Power Factor, Low Total Harmonic Distortion Voltage-Mode Control with (VIN) 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 SecondLevel Protection on OVP Pin Open-Feedback Protection Power-Limit and Current Protection for Each Phase Low Startup Current of 80A Typical Works with DC and 50Hz to 400Hz AC Inputs 2 Description The FAN9611/12 family of interleaved dual BoundaryConduction-Mode (BCM) Power-Factor-Correction (PFC) controllers operate two parallel-connected boost power trains 180° out of phase. Interleaving extends the maximum practical power level of the control technique from about 300W to greater than 800W. Unlike the continuous conduction mode (CCM) technique often used at higher power levels, BCM offers inherent zerocurrent 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……
