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TPS54310

更新时间： 2024-11-28 22:49:39
品牌 Logo 应用领域
德州仪器 - TI 输出元件输入元件
页数 文件大小 规格书
14页 142K
描述
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs

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TPS54310 数据手册

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Typical Size  
(6,3 mm x 6,4 mm)  
www.ti.com  
TPS54310  
SLVS412A – DECEMBER 2001 – REVISED JUNE 2002  
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM  
SWITCHER WITH INTEGRATED FETs (SWIFT )  
FEATURES  
DESCRIPTION  
D
60-mΩ MOSFET Switches for High Efficiency  
at 3-A Continuous Output Source or Sink  
Current  
0.9-V to 3.3-V Adjustable Output Voltage With  
1% Accuracy  
Externally Compensated for Design Flexibility  
Fast Transient Response  
Wide PWM Frequency: Fixed 350 kHz, 550  
kHz, or Adjustable 280 kHz to 700 kHz  
Load Protected by Peak Current Limit and  
Thermal Shutdown  
Integrated Solution Reduces Board Area and  
Total Cost  
As members of the SWIFT family of dc/dc regulators,  
the TPS54310 low-input-voltage high-output-current  
synchronous-buck PWM converter integrates all  
required active components. Included on the substrate  
with the listed features are a true, high performance,  
voltage error amplifier that provides high performance  
under transient conditions; an undervoltage-lockout  
circuit to prevent start-up until the input voltagereaches  
3 V; an internally and externally set slow-start circuit to  
limit in-rush currents; and a power good output useful  
for processor/logic reset, fault signaling, and supply  
sequencing.  
D
D
D
D
D
D
The TPS54310 device is available in a thermally  
enhanced 20-pin TSSOP (PWP) PowerPAD  
package, which eliminates bulky heatsinks. TI provides  
evaluation modules and the SWIFT designer software  
tool to aid in quickly achieving high-performance power  
supply designs to meet aggressive equipment  
development cycles.  
APPLICATIONS  
D
D
Low-Voltage, High-Density Systems With  
Power Distributed at 5 V or 3.3 V  
Point of Load Regulation for High  
Performance DSPs, FPGAs, ASICs, and  
Microprocessors  
D
D
Broadband, Networking and Optical  
Communications Infrastructure  
Portable Computing/Notebook PCs  
EFFICIENCY  
vs  
SimplifiedSchematic  
LOAD CURRENT  
Input  
Output  
VIN  
PH  
96  
TPS54310  
94  
92  
90  
88  
86  
84  
BOOT  
PGND  
COMP  
VBIAS  
VSENSE  
T
V
V
= 25°C  
= 5 V  
= 3.3 V  
A
I
O
AGND  
82  
80  
Compensation  
Network  
0
0.5  
1
1.5  
2
2.5  
3
Load Current – A  
Pleasebe aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments  
semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PowerPAD and SWIFT are trademarks of TexasInstruments.  
PRODUCTION DATA information is current as of publication date. Products  
conform to specifications per the terms of Texas Instruments standard warranty.  
Production processing does not necessarily include testing of all parameters.  
Copyright 2002, Texas Instruments Incorporated  
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