March 2012
FDMF6706C – Extra-Small, High-Performance, High-
Frequency DrMOS Module
Benefits
Description
The XS™ DrMOS family is Fairchild’s next-generation,
fully optimized, ultra-compact, integrated MOSFET plus
driver power stage solutions for high-current, high-
frequency, synchronous buck DC-DC applications. The
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Ultra-Compact 6x6mm PQFN, 72% Space-Saving
Compared to Conventional Discrete Solutions
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Fully Optimized System Efficiency
Clean Switching Waveforms with Minimal Ringing
High-Current Handling
FDMF6706C integrates
a
driver IC, two power
MOSFETs, and a bootstrap Schottky diode into a
thermally enhanced, ultra-compact 6x6mm PQFN
package.
Features
With an integrated approach, the complete switching
power stage is optimized with regards 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 a snubber circuit in most buck
converter applications.
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Over 93% Peak-Efficiency
High-Current Handling of 43A
High-Performance PQFN Copper Clip Package
3-State 5V PWM Input Driver
Shorter Propagation Delays than FDMF6704
Shorter Dead Times than FDMF6704
Skip-Mode SMOD# (Low-Side Gate Turn Off) Input
A
new driver IC with reduced dead times and
propagation delays further enhances the performance of
this part. A thermal warning function has been included
to warn of a potential over-temperature situation. The
FDMF6706C also incorporates features, such as Skip
Mode (SMOD), for improved light-load efficiency along
with a 3-state 5V PWM input for compatibility with a
wide range of PWM controllers.
Thermal Warning Flag for Over-Temperature
Condition
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Driver Output Disable Function (DISB# Pin)
Internal Pull-Up and Pull-Down for SMOD# and
DISB# Inputs, Respectively
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Fairchild PowerTrench® Technology MOSFETs for
Clean Voltage Waveforms and Reduced Ringing
Applications
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High-Performance Gaming Motherboards
Fairchild SyncFET™ (Integrated Schottky Diode)
Technology in the Low-Side MOSFET
Compact Blade Servers, V-Core and Non-V-Core
DC-DC Converters
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Integrated Bootstrap Schottky Diode
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Desktop Computers, V-Core and Non-V-Core
DC-DC Converters
Adaptive Gate Drive Timing for Shoot-through
Protection
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Workstations
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Under-Voltage Lockout (UVLO)
High-Current DC-DC Point-of-Load (POL)
Converters
Optimized for Switching Frequencies up to 1MHz
Low-Profile SMD Package
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Networking and Telecom Microprocessor Voltage
Regulators
Fairchild Green Packaging and RoHS Compliant
Based on the Intel® 4.0 DrMOS Standard
Small Form-Factor Voltage Regulator Modules
Ordering Information
Part
Number
Current
Rating
Input
Voltage
Switching
Frequency
Package
Top Mark
40-Lead, Clipbond PQFN DrMOS,
6.0x6.0mm Package
FDMF6706C
40A
12V
1000kHz
FDMF6706C
© 2011 Fairchild Semiconductor Corporation
FDMF6706C • Rev. 1.0 2
www.fairchildsemi.com