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TPS544x25 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS544x25
Description  4.5-V to 18-V, 20-A and 30-A SWIFT Synchronous Buck Converters with PMBus and Frequency Synchronization
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS544x25 Fiches technique(HTML) 1 Page - Texas Instruments

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VIN = 12 V
No Snubber
L = 470 nH
fSW = 500 kHz
RDCR = 0.3mŸ
RBOOT = 0 Ÿ
60
100
Load Current (A)
65
90
0
12
70
80
85
95
75
4
8
16
28
20
24
32
VOUT = 0.5
VOUT = 1.0
VOUT = 1.5
VOUT = 2.5
VOUT = 3.3
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Design
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.
TPS544C25, TPS544B25
SLUSC81 – MAY 2015
TPS544x25 4.5-V to 18-V, 20-A and 30-A SWIFT™
Synchronous Buck Converters with PMBus™ and Frequency Synchronization
1
1 Features
1
PMBus 1.2 Compliant Converters: 20 A and 30 A
Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.5 V to 5.5 V
5 mm × 7 mm LQFN Package
Single Thermal Pad
Integrated 5.5-mΩ and 2.0-mΩ Stacked
NexFET™ Power Stage
500-mV to 1500-mV Reference for Adapative
Voltage Scaling (AVS) and Margining through
PMBus
0.5% Reference Accuracy at 600 mV and Above
Lossless Low-Side MOSFET Current Sensing
Voltage Mode Control with Input Feed-Forward
Differential Remote Sensing
Monotonic Start-Up into Pre-Biased Output
Output Voltage and Output Current Reporting
External Temperature Monitoring with 2N3904
Transistor
Programmable via the PMBus interface
VOUT_COMMAND and AVS VOUT Transition
Rate
Overcurrent Protection with Thermal
Compensation
UVLO, Soft-Start and Soft-Stop
PGOOD, OV, UV, OT Levels
Fault Responses
Turn-On and Turn-Off Delays
Thermal Shutdown
Pin Strapping for Switching Frequency: 200 kHz to
1 MHz
Frequency Synchronization to an External Clock
Footprint Compatible 20-A, 30-A Converters
2 Applications
Test and Instrumentation
Ethernet Switches, Optical Switches, Routers,
Base Stations
Servers
Enterprise Storage SSD
High-Density Power Solutions
3 Description
The TPS544x25 devices are PMBus 1.2 Compliant,
non-isolated DC-DC converters with integrated FETs,
capable of high-frequency operation and 20-A or 30-A
current output from a 5 mm × 7 mm package. High-
frequency,
low-loss
switching,
provided
by
an
integrated NexFET™ power stage and optimized
drivers, allows for very high-density power solutions.
The PMBus interface enables the AVS through
VOUT_COMMAND, flexible converter configuration,
as well as key parameters monitoring including output
voltage, current and an optional external temperature.
Response to fault conditions can be set to either
restart, latch-off or ignore depending on system
requirements.
Device Information
DEVICE NAME
PACKAGE
BODY SIZE
TPS544B25RVFT
LQFN (40)
5.00 mm × 7.00 mm
TPS544C25RVFT
LQFN (40)
5.00 mm × 7.00 mm
.
.
Efficiency


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