The SPS family is Fairchild’s next-generation, fully optimized, ultra-compact, integrated MOSFET plus driver power stage solution for high-current, high-frequency, synchronous buck, DC-DC applications. The FDMF5822DC integrates a driver IC with a bootstrap Schottky diode, two power MOSFETs, and a thermal monitor into a thermally enhanced, ultra-compact 5 mm, x 5 mm package.With an integrated approach, the SPS switching power stage is optimized for driver and MOSFET dynamic performance, minimized system inductance, and power MOSFET R. The SPS family uses Fairchild"s high-performance PowerTrench® MOSFET technology, which reduces switch ringing, eliminating the need for a snubber circuit in most buck converter applications.A driver IC with reduced dead times and propagation delays further enhances the performance. A thermal warning function warns of a potential over-temperature situation. A thermal shutdown function turns off the driver if an over-temperature condition occurs. The FDMF5822DC incorporates an Auto-DCM Mode (ZCD#) for improved light-load efficiency. The FDMF5822DC also provides a 3-state 3.3 V PWM input for compatibility with a wide range of PWM controllers.
●Features
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● Ultra-Compact 5 mm x 5 mm PQFN Copper-Clip Package with Flip Chip Low-Side MOSFET and Dual Cool™ Architecture
● High Current Handling: 55 A
● 3-State 3.3 V PWM Input Gate Driver
● Dynamic Resistance Mode for Low-Side Drive (LDRV) Slows Low-Side MOSFET during Negative Inductor Current Switching
● Auto DCM (Low-Side Gate Turn Off) Using ZCD# Input
● Thermal Warning (THWN#) to Warn Over-Temperature of Gate Driver IC
● Thermal Shutdown (THDN)
● HS-Short Detect Fault# / Shutdown
● Dual Mode Enable / Fault# Pin
● Internal Pull-Up and Pull-Down for ZCD# and EN Inputs, respectively
● Fairchild PowerTrench® MOSFETs for Clean Voltage Waveforms and Reduced Ringing
● Fairchild SyncFET™ Technology (Integrated Schottky Diode) in Low-Side MOSFET
● Integrated Bootstrap Schottky Diode
● Optimized / Extremely Short Dead-Times
● Optimized for Switching Frequencies up to 1.5 MHz
● Under-Voltage Lockout (UVLO) on VCC
● Low Shutdown Current: < 3 µA
● PWM Minimum Controllable On-Time: 30 ns
● Operating Ambient Temperature Range: -40°C to +125°C
● Optimized FET Pair for Highest Efficiency: 10 ~ 15% Duty Cycle
● Fairchild Green Packaging and RoHS Compliance
