Primary-Side Synchronous Rectifier (SR) Trigger Controller
for Dual Forward Converter
Primary-Side Trigger Controller for Dual Forward
Converters with Synchronous Rectifier (SR)
Specialized SR Controller for Dual Forward
Programmable Turn-on Delay Time for the
Powering SR (RDLY Pin)
Winding Voltage Detection for Precision Control at
Light-Load Condition (DET Pin)
Green-Mode Operation to Improve Light-Load
Differential Mode Control Signal with Better Noise
VDD Over-Voltage Protection (OVP)
Personal Computer (PC) Power Supply
Entry-Level Server Power Supply
FAN6210 is a primary-side trigger Integrated Circuit (IC)
specially designed for the synchronous rectifier (SR) in
dual forward converters employing FSR660/630.
FAN6210 provides drive signal for the primary-side
power switches by using an output signal from PWM
controller. FAN6210 can be combined with any PWM
controller that can drive a dual-forward converter. To
obtain optimal timing for the SR drive signals,
transformer winding voltage is also monitored. To
improve light-load efficiency, green mode operation is
employed, which disables the SR turn-on trigger signal,
minimizing gate drive power consumption at light load.
FAN6210 is available in 8-pin SOP package.
-40°C to +105°C
8-Pin Small Outline
Tape & Reel
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© 2009 Fairchild Semiconductor Corporation
FAN6210 Rev. 1.0.1