FAN6248HC/HD/LC/LD
Advanced Synchronous Rectifier Controller for LLC Resonant Converter
The FAN6248 is an advanced sync...
FAN6248HC/HD/LC/LD
Advanced Synchronous Rectifier Controller for LLC Resonant Converter
The FAN6248 is an advanced synchronous rectifier (SR) controller that is optimized for LLC resonant converter topology with minimum external components. It has two driver stages for driving the SR
MOSFETs which are rectifying the outputs of the secondary transformer windings. The two gate driver stages have their own sensing inputs and operate independently of each other. The adaptive parasitic inductance compensation function minimizes the body diode conduction maximizing the efficiency. The advanced control algorithm allows stable SR operation over entire load range. According to the operating frequency and turn-off threshold
voltage, FAN6248 has four different versions − FAN6248HCMX, FAN6248HDMX, FAN6248LCMX, FAN6248LDMX.
Features
Highly Integrated Self-contained Control of Synchronous Rectifier
with a Minimum External Component Count
Optimized for LLC Resonant Converter Anti Shoot-through Control for Reliable SR Operation Separate 100 V Rated Sense Inputs for Sensing the Drain and Source
Voltage of each SR
MOSFET
Adaptive Parasitic Inductance Compensation to Minimize the Body
Diode Conduction
SR Current Inversion Detection under Light Load Condition Light Load Detection to Increase Dead Time Target Adaptive Minimum on Time for Noise Immunity Operating
Voltage Range up to 30 V Low Start-up and Stand-by Current Consumption Operating Frequency Range from 25 kHz up t...