FDMF6706B Datasheet, PDF (1/19 Pages) Fairchild Semiconductor – Extra-Small, High-Performance, High- Frequency DrMOS Module

March 2012
FDMF6706B - Extra-Small, High-Performance, High-
Frequency DrMOS Module
Benefits
 Ultra-Compact 6x6mm PQFN, 72% Space-Saving
Compared to Conventional Discrete Solutions
 Fully Optimized System Efficiency
 Clean Switching Waveforms with Minimal Ringing
 High-Current Handling
Features
 Over 93% Peak-Efficiency
 High-Current Handling of 45A
 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 the 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
Description
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
FDMF6706B integrates a driver IC, two power MOSFETs,
and a bootstrap Schottky diode into a thermally
enhanced, ultra-compact 6x6mm PQFN package.
With an integrated approach, the complete switching
power stage is optimized for driver and MOSFET
dynamic performance, system inductance, and power
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which dramatically reduces switch ringing, eliminating
the snubber circuit in most buck converter applications.
A new driver IC with reduced dead times and
propagation delays further enhances performance. A
thermal warning function warns of potential over-
temperature situations. FDMF6706B also incorporates
features such as Skip Mode (SMOD) for improved light-
load efficiency, along with a Three-state 3.3V PWM
input for compatibility with a wide range of PWM
controllers.
Applications
 High-Performance Gaming Motherboards
 Compact Blade Servers, V-Core and Non-V-Core
DC-DC Converters
 Desktop Computers, V-Core and Non-V-Core
DC-DC Converters
 Workstations
 High-Current DC-DC Point-of-Load (POL)
Converters
 Networking and Telecom Microprocessor Voltage
Regulators
 Small Form-Factor Voltage Regulator Modules
Ordering Information
Part Number Current Rating
Package
Top Mark
FDMF6706B
45A
40-Lead, Clipbond PQFN DrMOS, 6.0mm x 6.0mm Package FDMF6706B
© 2011 Fairchild Semiconductor Corporation
FDMF6706B • Rev. 1.0.1
www.fairchildsemi.com