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 FDMF5823DC 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 monitor function warns of a potential over-temperature situation. A programmable thermal shutdown function turns off the driver if an over-temperature condition occurs. The FDMF5823DC incorporates an Auto-DCM Mode (ZCD#) for improved light-load efficiency. The FDMF5823DC 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: 55A
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 Monitor for Module Temperature Reporting
Programmable Thermal Shutdown (P_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® 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 ComplianceMOSFETs
