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TPS40055 PDF预览

TPS40055

更新时间: 2024-11-24 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 输入元件控制器
页数 文件大小 规格书
33页 494K
描述
WIDE INPUT SYNCHRONOUS BUCK CONTROLLER

TPS40055 数据手册

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8
SLUS593B − DECEMBER 2003 − REVISED APRIL 2004  
ꢓꢍꢏ ꢔ ꢏꢒ ꢌꢀ ꢑꢒ ꢕ ꢕꢊ ꢑ  
FEATURES  
DESCRIPTION  
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Operating Input Voltage 8 V to 40 V  
The TPS4005x is a family of high-voltage, wide  
Input Voltage Feed-Forward Compensation  
< 1 % Internal 0.7-V Reference  
input (8 V to 40 V), synchronous, step-down  
converters. The TPS4005x family offers design  
flexibility with a variety of user programmable  
functions, including soft-start, UVLO, operating  
frequency, voltage feed- forward, high-side  
current limit, and loop compensation.  
Programmable Fixed-Frequency Up to 1 MHz  
Voltage Mode Controller  
D
Internal Gate Drive Outputs for High-Side and  
Synchronous N-Channel MOSFETs  
The TPS4005x are also synchronizable to an  
external supply. They incorporate MOSFET gate  
drivers for external N-channel high-side and  
synchronous rectifier (SR) MOSFETs. Gate drive  
logic incorporates anti-cross conduction circuitry  
to prevent simultaneous high-side and  
synchronous rectifier conduction.  
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16-Pin PowerPADt Package (θ = 2°C/W)  
JC  
Thermal Shutdown  
Externally Synchronizable  
Programmable High-Side Current Limit  
Programmable Closed-Loop Soft-Start  
TPS40054 Source Only  
The TPS4005x uses voltage feed-forward control  
techniques to provide good line regulation over  
the wide (4:1) input voltage range, and fast  
response to input line transients with near  
constant gain with input variation which eases  
loop compensation. The externally programmable  
current limit provides pulse-by-pulse current limit,  
as well as hiccup mode operation utilizing an  
internal fault counter for longer duration  
overloads.  
TPS40055 Source/Sink  
TPS40057 Source/Sink With V  
Prebias  
OUT  
APPLICATIONS  
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Power Modules  
Networking/Telecom  
Industrial  
Servers  
SIMPLIFIED APPLICATION DIAGRAM  
TPS4005xPWP  
1
2
3
4
5
6
7
8
KFF  
16  
15  
ILIM  
VIN  
RT  
V
IN  
BP5  
SYNC  
BOOST 14  
HDRV 13  
12  
SGND  
SS/SD  
VFB  
SW  
+
BP10 11  
LDRV 10  
V
OUT  
COMP  
PGND  
9
UDG−03179  
ꢀꢢ  
Copyright 2004, Texas Instruments Incorporated  
ꢞ ꢢ ꢟ ꢞꢗ ꢘꢬ ꢚꢙ ꢝ ꢥꢥ ꢣꢝ ꢛ ꢝ ꢜ ꢢ ꢞ ꢢ ꢛ ꢟ ꢧ  
1
www.ti.com  

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