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Fairchild Semiconductor Electronic Components Datasheet

FDMF6706B Datasheet

High-Frequency DrMOS

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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
MpeOrfSorFmEaTncReDS(OPNo).wXeSrT™renDcrhM®OSMuOsSeFs EFTairctheicldh'ns ohloigghy-,
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
Free Datasheet http://www.datasheet4u.com/


Fairchild Semiconductor Electronic Components Datasheet

FDMF6706B Datasheet

High-Frequency DrMOS

No Preview Available !

Typical Application Circuit
V5V
CVDRV
CVIN
VIN
3V ~ 15V
DISB#
PWM Input
OFF
ON
Open Drain
Output
DISB#
VDRV
VCIN
VIN
BOOT
RBOOT
PWM
SMOD#
FDMF6706B
PHASE
VSWH
THWN#
CGND
PGND
CBOOT
LOUT
COUT
VOUT
Figure 1. Typical Application Circuit
DrMOS Block Diagram
VCIN
UVLO
DISB#
10µA
VCIN
RUP_PWM
PWM
RDN_PWM
Input
3-State
Logic
THWN#
Temp.
Sense
VDRV
GH
Logic
VCIN
GL
Logic
10µA
DBoot
Level Shift
Dead-Time
Control
BOOT
VIN
Q1
HS Power
MOSFET
GH
30kΩ
PHASE
VDRV
VSWH
GL
30kΩ
Q2
LS Power
MOSFET
CGND
© 2011 Fairchild Semiconductor Corporation
FDMF6706B • Rev. 1.0.1
SMOD#
Figure 2. DrMOS Block Diagram
2
PGND
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/


Part Number FDMF6706B
Description High-Frequency DrMOS
Maker Fairchild Semiconductor
PDF Download

FDMF6706B Datasheet PDF






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