FDMF6705V datasheet(2/19 Pages) ONSEMI

2 / 19 page

March 2012

www.fairchildsemi.com

FDMF6705V • Rev. 1.0 2

FDMF6705V - 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

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

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.

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

Switching

Frequency

Package

Top Mark

FDMF6705V

40A

12V

1000kHz

40-Lead, Clipbond PQFN DrMOS,

6.0x6.0mm Package

FDMF6705V

FDMF6705V Datasheet(PDF) 2 Page - ON Semiconductor

FDMF6705V Datasheet(HTML) 2 Page - ON Semiconductor

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