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Fairchild Semiconductor Electronic Components Datasheet

FDMF6706C Datasheet

High-Frequency DrMOS

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March 2012
FDMF6706C – 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 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
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 Compliant
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 solutions for high-current, high-
frequency, synchronous buck DC-DC applications. The
FDMF6706C 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 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.
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.
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
Input
Voltage
FDMF6706C
40A
12V
Switching
Frequency
1000kHz
Package
40-Lead, Clipbond PQFN DrMOS,
6.0x6.0mm Package
Top Mark
FDMF6706C
© 2011 Fairchild Semiconductor Corporation
FDMF6706C • Rev. 1.0 2
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/


Fairchild Semiconductor Electronic Components Datasheet

FDMF6706C 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
PWM
SMOD#
FDMF6706C
PHASE
VSWH
THWN#
CGND
PGND
RBOOT
CBOOT
LOUT
COUT
VOUT
DrMOS Block Diagram
VCIN
UVLO
Figure 1. Typical Application Circuit
VDRV
BOOT
DBoot
VIN
Q1
HS Power
MOSFET
DISB#
10µA
VCIN
RUP_PWM
PWM
RDN_PWM
Input
3-State
Logic
THWN#
Temp.
Sense
GH
Logic
Level Shift
Dead-Time
Control
VCIN
GL
Logic
10µA
GH
30kΩ
PHASE
VDRV
VSWH
GL
30kΩ
Q2
LS Power
MOSFET
CGND
© 2011 Fairchild Semiconductor Corporation
FDMF6706C • Rev. 1.0.2
SMOD#
Figure 2. DrMOS Block Diagram
2
PGND
www.fairchildsemi.com
Free Datasheet http://www.datasheet4u.com/


Part Number FDMF6706C
Description High-Frequency DrMOS
Maker Fairchild Semiconductor
PDF Download

FDMF6706C Datasheet PDF






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