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TPS54312

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
15页 550K
描述
3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs

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TPS54312 数据手册

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Typical Size  
(6,3 mm x 6,4 mm)  
TPS54311, TPS54312  
TPS54313,TPS54314  
www.ti.com  
TPS54315,TPS54316  
SLVS416A – FEBRUARY 2002 – JULY 2003  
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, 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V Fixed  
Output Voltage Devices With 1% Initial  
Accuracy  
Internally Compensated for Low Parts Count  
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  
TPS54311, TPS54312, TPS54313, TPS54314,  
TPS54315 and TPS54316 low-input-voltage high-output-  
current synchronous-buck PWM converters integrate 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 voltage reaches 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 TPS54311, TPS54312, TPS54313, TPS54314,  
TPS54315 and TPS54316 devices are available in a  
thermally enhanced 20-pin TSSOP (PWP) PowerPAD  
package, which eliminates bulky heatsinks. TI provides  
evaluation modules and the SWIFTdesigner 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  
LOAD CURRENT  
SimplifiedSchematic  
96  
94  
92  
90  
88  
86  
84  
Input  
Output  
VIN  
PH  
TPS54316  
BOOT  
PGND  
VBIAS  
VSENSE  
GND  
T
A
= 25°C  
V
V
= 5 V  
82  
80  
I
= 3.3 V  
O
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 – 2003, Texas Instruments Incorporated  
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 		具有集成 Fet 的增强型产品 3V 至 6V 输入 3A 输出的同步降压 Pwm 转换开

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