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TPS55340-EP_15

更新时间： 2024-11-26 01:10:35
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德州仪器 - TI /
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38页 1479K
描述
TPS55340-EP Integrated 5-A, 40-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator

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TPS55340-EP_15 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
TPS55340-EP  
SLVSCG7 –JULY 2014  
TPS55340-EP Integrated 5-A, 40-V Wide Input Range  
Boost/SEPIC/Flyback DC-DC Regulator  
1 Features  
2 Applications  
1
•
•
•
•
•
•
•
•
•
•
Internal 5-A, 40-V Low-Side MOSFET Switch  
•
•
•
3.3-V, 5-V, 12-V, 24-V Power Conversion  
Boost, SEPIC, and Flyback Topologies  
2.9-V to 32-V Input Voltage Range  
±0.7% Reference Voltage  
Thunderbolt Port, Power Docking for Tablets and  
Portable PCs  
0.5-mA Operating Quiescent Current  
2.7-µA Shutdown Supply Current  
•
•
Industrial Power Systems  
ADSL Modems  
Fixed Frequency Current Mode PWM Control  
Frequency Adjustable from 100 kHz to 1.2 MHz  
Synchronization Capability to External Clock  
Adjustable Soft-Start Time  
3 Description  
The TPS55340-EP 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-, 5-,  
12-, and 24-V power rails.  
Pulse-Skipping for Higher Efficiency at Light  
Loads  
•
•
Cycle-by-Cycle Current Limit, Thermal Shutdown,  
and UVLO Protection  
Supports Defense, Aerospace, and Medical  
Applications  
The TPS55340-EP regulates the output voltage with  
current mode pulse width modulation (PWM) 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.  
–
–
–
–
Controlled Baseline  
One Assembly and Test Site  
One Fabrication Site  
Available in Military (–55°C to 125°C)  
Temperature Range  
–
–
–
Extended Product Life Cycle  
Extended Product-Change Notification  
Product Traceability  
The device features  
a programmable soft-start  
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.  
Device Information(1)  
ORDER NUMBER  
PACKAGE  
BODY SIZE (NOM)  
TPS55340MRTETEP  
WQFN (16)  
3.00 mm × 3.00 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
4 Typical Application (Boost)  
L
D
VIN  
VOUT  
Efficiency vs Output Current  
100  
95  
CI  
CO  
TPS55340  
SW  
VIN  
EN  
90  
RSH  
SW  
SW  
85  
VOUT = 24 V  
fSW = 600 kHz  
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
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
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