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FAN3223_10 PDF预览

FAN3223_10

更新时间: 2024-11-09 11:51:51
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 驱动器栅极栅极驱动
页数 文件大小 规格书
25页 1549K
描述
Dual 4A High-Speed, Low-Side Gate Drivers

FAN3223_10 数据手册

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January 2010  
FAN3223 / FAN3224 / FAN3225  
Dual 4A High-Speed, Low-Side Gate Drivers  
Features  
Description  
The FAN3223-25 family of dual 4A gate drivers is  
designed to drive N-channel enhancement-mode  
MOSFETs in low-side switching applications by  
providing high peak current pulses during the short  
switching intervals. The driver is available with either  
TTL or CMOS input thresholds. Internal circuitry  
provides an under-voltage lockout function by holding  
the output LOW until the supply voltage is within the  
operating range. In addition, the drivers feature matched  
internal propagation delays between A and B channels  
for applications requiring dual gate drives with critical  
timing, such as synchronous rectifiers. This also  
enables connecting two drivers in parallel to effectively  
double the current capability driving a single MOSFET.  
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Industry-Standard Pinouts  
4.5 to 18V Operating Range  
5A Peak Sink/Source at VDD = 12V  
4.3A Sink / 2.8A Source at VOUT = 6V  
Choice of TTL or CMOS Input Thresholds  
Three Versions of Dual Independent Drivers:  
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Dual Inverting + Enable (FAN3223)  
Dual Non-Inverting + Enable (FAN3224)  
Dual-Inputs (FAN3225)  
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Internal Resistors Turn Driver Off If No Inputs  
MillerDrive™ Technology  
The FAN322X drivers incorporate MillerDrive™  
architecture for the final output stage. This bipolar-  
MOSFET combination provides high current during the  
Miller plateau stage of the MOSFET turn-on / turn-off  
process to minimize switching loss, while providing rail-  
to-rail voltage swing and reverse current capability.  
12ns / 9ns Typical Rise/Fall Times with 2.2nF Load  
Typical Propagation Delay Under 20ns Matched  
within 1ns to the Other Channel  
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Double Current Capability by Paralleling Channels  
8-Lead 3x3mm MLP or 8-Lead SOIC Package  
Rated from –40°C to +125°C Ambient  
The FAN3223 offers two inverting drivers and the  
FAN3224 offers two non-inverting drivers. Each device  
has dual independent enable pins that default to ON if  
not connected. In the FAN3225, each channel has dual  
inputs of opposite polarity, which allows configuration as  
non-inverting or inverting with an optional enable  
function using the second input. If one or both inputs are  
left unconnected, internal resistors bias the inputs such  
that the output is pulled LOW to hold the power  
MOSFET OFF.  
Applications  
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Switch-Mode Power Supplies  
High-Efficiency MOSFET Switching  
Synchronous Rectifier Circuits  
DC-to-DC Converters  
Motor Control  
Related Resources  
AN-6069: Application Review and Comparative  
Evaluation of Low-Side Gate Drivers  
FAN3223  
FAN3224  
FAN3225  
Figure 1. Pin Configurations  
© 2007 Fairchild Semiconductor Corporation  
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.5  
www.fairchildsemi.com  

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