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FAN5009 PDF预览

FAN5009

更新时间: 2024-09-17 22:40:51
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 驱动器
页数 文件大小 规格书
13页 167K
描述
Dual Bootstrapped 12V MOSFET Driver

FAN5009 数据手册

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www.fairchildsemi.com  
FAN5009  
Dual Bootstrapped 12V MOSFET Driver  
Features  
General Description  
• Drives N-channel High-Side and Low-Side MOSFETs in  
a synchronous buck configuration  
• 12V High-Side and 12V Low-Side Drive  
• Internal Adaptive “Shoot-Through” Protection  
• Integrated Bootstrap Diode for High-Side Drive  
• Fast rise and fall times  
The FAN5009 is a dual, high frequency MOSFET driver,  
specifically designed to drive N-Channel power MOSFETs  
in a synchronous-rectified buck converter. These drivers,  
combined with a Fairchild Multi-Phase PWM controller and  
power MOSFETs, form a complete core voltage regulator  
solution for advanced microprocessors.  
• Switching Frequency Up to 500kHz  
• OD input for Output Disable – allows for synchronization  
with PWM controller  
• SOIC-8 Package  
• Available in low thermal resistance MLP package  
The FAN5009 drives the upper and lower MOSFET gates of  
a synchronous buck regulator to 12VGS. The upper gate  
drive includes an integrated boot diode and requires only an  
external bootstrap capacitor (CBOOT). The output drivers in  
the FAN5009 have the capacity to efficiently switch power  
MOSFETs at frequencies up to 500kHz. The circuit’s  
adaptive shoot-through protection prevents the MOSFETs  
from conducting simultaneously.  
Applications  
• Multi-phase VRM/VRD regulators for Microprocessor  
Power  
• High Current/High Frequency DC/DC Converters  
• High Power Modular Supplies  
The FAN5009 is rated for operation from 0°C to +85°C and  
is available in low-cost SOIC-8 or MLP packages.  
Typical Application  
12V  
FAN5009  
CVCC  
VCC  
4
BOOT  
1
Q1  
CBOOT  
PWM  
2
HDRV  
8
VOUT  
L1  
OVERLAP  
PROTECTION  
CIRCUIT  
SW  
7
Q2  
COUT  
OD  
VCC  
3
LDRV  
PGND  
5
6
Figure 1. Typical Application.  
REV. 1.0.5 7/22/04  

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