FDMF6705V Datasheet, PDF (1/18 Pages) Fairchild Semiconductor – Extra-Small, High- Performance, High-Frequency DrMOS Module

March 2011
FDMF6705V – XS™ DrMOS – Extra-Small, High-
Performance, High-Frequency DrMOS Module
Benefits
Single 12V Input Power Supply Operation
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
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
FDMF6705V integrates a driver IC, two power
MOSFETs, and a bootstrap Schottky diode into a
thermally enhanced, ultra-compact 6x6mm PQFN
package.
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 FDMF6704V
Shorter Dead Times than FDMF6704V
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
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 FDMF6705V also incorporates features,
such as Skip Mode (SMOD), for improved light-load
efficiency along with a 3-state 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
FDMF6705V
40A
12V
Switching
Frequency
Package
1000kHz
40-Lead, Clipbond PQFN DrMOS,
6.0x6.0mm Package
© 2011 Fairchild Semiconductor Corporation
FDMF6705V • Rev. 1.0 1
Top Mark
FDMF6705V
www.fairchildsemi.com