|
FDMF6705B Datasheet, PDF (1/19 Pages) Fairchild Semiconductor – Extra-Small, High-Performance, High- Frequency DrMOS Module | |||
|
March 2012
FDMF6705B - Extra-Small, High-Performance, High-
Frequency DrMOS Module
Benefits
ï§ Ultra-Compact 6x6mm PQFN, 72% Space-Saving
Compared to Conventional Discrete Solutions
ï§ Fully Optimized System Efficiency
ï§ Clean Switching Waveforms with Minimal Ringing
ï§ High-Current Handling
Features
ï§ Over 93% Peak-Efficiency
ï§ High-Current Handling of 40A at 12VIN
ï§ High-Current Handling of 38A at 19VIN
ï§ High-Performance PQFN Copper-Clip Package
ï§ 3-State 3.3V PWM Input Driver
ï§ Skip-Mode SMOD# (Low-Side Gate Turn-Off) Input
ï§ Thermal Warning Flag for Over-Temperature
Condition
ï§ Driver Output Disable Function (DISB# Pin)
ï§ Internal Pull-Up and Pull-Down for SMOD# and
DISB# Inputs, Respectively
ï§ Fairchild PowerTrench® Technology MOSFETs for
Clean Voltage Waveforms and Reduced Ringing
ï§ Fairchild SyncFET⢠(Integrated Schottky Diode)
Technology in the Low-Side MOSFET
ï§ Integrated Bootstrap Schottky Diode
ï§ Adaptive Gate Drive Timing for Shoot-Through
Protection
ï§ Under-Voltage Lockout (UVLO)
ï§ Optimized for Switching Frequencies up to 1MHz
ï§ Low-Profile SMD Package
ï§ Fairchild Green Packaging and RoHS Compliance
ï§ Based on the Intel® 4.0 DrMOS Standard
Description
The XS⢠DrMOS family is Fairchildâs next-generation,
fully optimized, ultra-compact, integrated MOSFET plus
driver power stage solution for high-current, high-
frequency, synchronous buck DC-DC applications. The
FDMF6705B 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 warns of a potential
over-temperature situation. The FDMF6705B 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
ï§ High-Performance Gaming Motherboards
ï§ Notebook Computers, V-Core and Non-V-Core
ï§ Compact Blade Servers, V-Core and Non-V-Core
DC-DC Converters
ï§ Desktop Computers, V-Core and Non-V-Core
DC-DC Converters
ï§ Workstations
ï§ High-Current DC-DC Point-of-Load (POL)
Converters
ï§ Small Form-Factor Voltage Regulator Modules
Ordering Information
Part Number Current Rating
Package
FDMF6705B
40A
40-Lead, Clipbond PQFN DrMOS, 6.0x6.0mm Package
Top Mark
FDMF6705B
© 2011 Fairchild Semiconductor Corporation
FDMF6705B ⢠Rev. 1.0.2
www.fairchildsemi.com
|
▷ |