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TPS54972PWP Datasheet

  • TPS54972PWP

  • 9-A OUTPUT, 3-V TO 4-V INPUT TRACKING/TERMINATION SYNCHRONOU...

  • 16頁

  • TI

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6,4 mm x 9,7 mm
www.ti.com
TPS54972
SLVS437A 鈥?AUGUST 2002 鈥?REVISED DECEMBER 2002
9-A OUTPUT, 3-V TO 4-V INPUT TRACKING/TERMINATION
SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETS (SWIFT鈩?
FEATURES
DESCRIPTION
As a member of the SWIFT鈩?family of dc/dc regulators,
the TPS54972 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 enables maximum
performance under transient conditions and flexibility in
choosing the output filter L and C components; an
under-voltage-lockout circuit to prevent start-up until the
input voltage reaches 3.0 V; an internally set slow-start
circuit to limit in-rush currents; and a status output to
indicate valid operating conditions.
The TPS54972 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD鈩?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.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Tracks Externally Applied Reference Voltage
15-m鈩?MOSFET Switches for High Efficiency at
9-A Continuous Output Source or Sink Current
6% to 90% V
I
Output Tracking Range
Wide PWM Frequency: Fixed 350 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
APPLICATIONS
DDR Memory Termination Voltage
Active Termination of GTL and SSTL
High-Speed Logic Families
DAC Controlled High Current Output Stage
Precision Point of Load Power Supply
SIMPLIFIED SCHEMATIC
V
(DDQ)
VIN
PH
TPS54972
BOOT
PGND
REFIN
VBIAS
AGND VSENSE
COMP
V
(TTQ)
VO 鈥?Output Voltage 鈥?50 mV/div
Input
TRANSIENT RESPONSE
V
I
= 3.3 V
V
O
= 1.25 V
Compensation
Network
2.25 A to 6.75 A
t 鈥?Time 鈥?/div>
碌s/div
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.
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 漏 2002, Texas Instruments Incorporated
I O 鈥?Output Current 鈥? A/div

TPS54972PWP 產(chǎn)品屬性

  • Understanding SWIFT Step Down Dc/Dc Converters

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • SWIFT™

  • 轉(zhuǎn)換器，DDR

  • 4 V ~ 6 V

  • 1

  • 0.2 V ~ 3.3 V

  • -40°C ~ 85°C

  • *

  • 28-SOIC（0.173"，4.40mm 寬）裸露焊盤

  • *

  • 管件

  • 296-17304-ND - EVAL MODULE FOR XILINX FPGA296-20605-ND - EVAL MOD FOR TPS54972

  • 296-15675-5

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