Fairchild公司的FDMF6707是Generation II XS™ DrMOS器件,在6x6mm尺寸內可提供94%的效率,可處理高達50A的大電流,具有三態3.3V PWM輸入驅動器,開關頻率可高達1MHz,主要用在高性能游戲主板,刀形服務器,V-Core和無V-Core DC/DC轉換器,臺式計算機和工作站電源,大電流DC/DC POL轉換器以及網絡和通信微處理器電源.本文介紹了FDMF6707主要特性和優勢,方框圖, 典型應用框圖, 電源損耗測量框圖和PCB布局圖.
Fairchild Semiconductor’s Generation II XS™ DrMOS Devices Offer 94% Efficiency in 6mm x 6mm Form Factor
The XS™ DrMOS family is Fairchild’s next-generation, fully optimized, ultra-compact, integrated MOSFET plus driver power stage solution for high-current, highfrequency, synchronous buck DC-DC applications. The FDMF6707B 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 MOSFET RDS(ON). XS™ DrMOS uses Fairchild’s highperformance PowerTrench® MOSFET technology, 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 overtemperature situations. FDMF6707B also incorporates features such as Skip Mode (SMOD) for improved lightload efficiency, along with a 3-state 3.3V PWM input for compatibility with a wide range of PWM controllers.
FDMF6707優勢:
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
FDMF6707主要特性:
Over 93% Peak-Efficiency
High-Current Handling of 50A
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 Compliant
Based on the Intel® 4.0 DrMOS Standard
FDMF6707應用:
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
圖1.FDMF6707 DrMOS方框圖
圖2.FDMF6707 DrMOS典型應用框圖
圖3.FDMF6707 DrMOS電源損耗測量框圖
圖4.FDMF6707 DrMOS顯示VCIN濾波器框圖
圖5.FDMF6707 DrMOS PCB布局圖
詳情請見:
http://www.fairchildsemi.com/ds/FD/FDMF6707B.pdf
