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TPS55340

更新时间： 2024-11-25 11:44:23
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
31页 1152K
描述
Integrated 5-A 40-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator

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TPS55340 数据手册

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TPS55340  
www.ti.com  
SLVSBD4 –MAY 2012  
Integrated 5-A 40-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator  
Check for Samples: TPS55340  
1
FEATURES  
DESCRIPTION  
The TPS55340 is a monolithic non-synchronous  
switching regulator with integrated 5-A, 40-V power  
switch. It can be configured in several standard  
switching-regulator topologies, including boost,  
SEPIC and isolated flyback. The device has a wide  
input voltage range to support applications with input  
voltage from multi-cell batteries or regulated 3.3-V, 5-  
V, 12-V, and 24-V power rails.  
2
•
Internal 5-A, 40-V Low-Side MOSFET Switch  
2.9-V to 32-V Input Voltage Range  
±0.7% Reference Voltage  
•
•
•
•
•
•
•
•
•
0.5mA Operating Quiescent Current  
2.7µA Shutdown Supply Current  
Fixed Frequency Current Mode PWM Control  
Frequency Adjustable from 100kHz to 1.2MHz  
Synchronization Capability to External Clock  
Adjustable Soft-Start Time  
The TPS55340 regulates the output voltage with  
current mode PWM (pulse width modulation) control,  
and has an internal oscillator. The switching  
frequency of PWM is set by either an external resistor  
or by synchronizing to an external clock signal. The  
user can program the switching frequency from 100  
kHz to 1.2 MHz.  
Pulse-Skipping for Higher Efficiency at Light  
Loads  
•
•
•
Cycle-by-Cycle Current Limit, Thermal  
Shutdown, and UVLO Protection  
The device features  
a programmable soft-start  
QFN-16 (3mmx3mm) Package with  
PowerPad™  
function to limit inrush current during start-up and has  
other built-in protection features including cycle-by-  
cycle over current limit and thermal shutdown.  
Wide –40°C to 150°C Operating TJ Range  
The TPS55340 is available in a small 3mm x 3mm  
16-pin QFN package with PowerPad™ for enhanced  
thermal performance.  
APPLICATIONS  
•
•
•
3.3-V, 5-V, 12-V, 24-V Power Conversion  
Boost, SEPIC, and Flyback Topologies  
Thunderbolt Port, Power Docking for Tablets  
and Portable PCs  
•
•
Industrial Power Systems  
ADSL Modems  
TYPICAL APPLICATION (BOOST)  
L
100  
95  
D
VIN  
VOUT  
CI  
CO  
90  
TPS55340  
85  
SW  
VIN  
EN  
RSH  
VOUT = 24 V  
fSW = 600 kHz  
SW  
SW  
80  
FREQ  
SS  
75  
70  
65  
FB  
PGND  
PGND  
PGND  
COMP  
SYNC  
CSS  
RSL  
RFREQ  
RC  
VIN = 15 V  
VIN = 12 V  
VIN = 5 V  
60  
55  
50  
AGND  
CC  
0
0.4  
0.8  
1.2  
1.6  
2
2.4  
Output Current (A)  
G031  
√
1
Please be 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 is a trademark of Texas Instruments.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2012, Texas Instruments Incorporated  
1234567...31

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 		符合 AEC-Q100 标准的集成式 5A 40V 宽输入范围升压/SEPIC/反激式直流

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