FDMF6820B: Extra-Small, High-Performance, High-Frequency DrMOS Module

The XS™ DrMOS 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 FDMF6820B integrates a driver IC, two power MOSFETs, and a bootstrap Schottky diode into a thermally enhanced, ultra-compact 6x6mm package.

With an integrated approach, the complete switching power stage is optimized with regard to driver and MOSFET dynamic performance, system inductance, and power MOSFET RDS(ON). XS™ DrMOS uses Fairchild's high-performance PowerTrench® MOSFET technology, which dramatically reduces switch ringing, eliminating the need for 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. The FDMF6820B also incorporates a Skip Mode (SMOD#) for improved light-load efficiency. The FDMF6820B also provides a 3-state 3.3V PWM input for compatibility with a wide range of PWM controllers.

Features

• Over 93% Peak-Efficiency
  
• High-Current Handling: 50A
  
• High-Performance PQFN Copper-Clip Package
  
• 3-State 3.3V PWM Input Driver
  
• Skip-Mode SMOD# (Low-Side Gate Turn Off) Input
  
• Thermal Warning Flag for Over-Temperature Condition
  
• Driver Output Disable Function (DISB# Pin)
  
• Internal Pull-Up and Pull-Down for SMOD# and DISB# Inputs, Respectively
  
• Fairchild PowerTrench® Technology MOSFETs for Clean Voltage Waveforms and Reduced Ringing
  
• Fairchild SyncFET™ (Integrated Schottky Diode) Technology in Low-Side MOSFET
  
• Integrated Bootstrap Schottky Diode
  
• Adaptive Gate Drive Timing for Shoot-Through Protection
  
• Under-Voltage Lockout (UVLO)
  
• Optimized for Switching Frequencies up to 1MHz
  
• Low-Profile SMD Package
  
• Fairchild Green Packaging and RoHS Compliance
  
• Based on the Intel® 4.0 DrMOS Standard