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TPS54073PWPR Datasheet

  • TPS54073PWPR

  • 2.2 ?4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SIN...

  • 1746.85KB

  • 23頁

  • TI

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Typical Size
6,4 mm X 9,7 mm
TPS54073
SLVS547 鈥?FEBRUARY 2005
www.ti.com
2.2 鈥?4 -V, 14-A SYNCHRONOUS BUCK CONVERTER
WITH DISABLED SINKING DURING START-UP
FEATURES
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鈥?/div>
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8-m鈩?MOSFET Switches for High Efficiency at
14.5-A Peak Output Current
Separate Low-Voltage Power Bus
Disabled Current Sinking During Start-Up
Adjustable Output Voltage Down to 0.9 V
Wide PWM Frequency: Fixed 350 kHz, 550 kHz
or Adjustable 280 kHz to 700 kHz
Synchronizable to 700 kHz
Load Protected by Peak Current Limit and
Thermal Shutdown
Integrated Solution Reduces Board Area and
Total Cost
DESCRIPTION
As a member of the SWIFT鈩amily of dc/dc regu-
lators, the TPS54073 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 and flexibility in choosing the
output
filter
L
and
C
components;
an
undervoltage-lockout circuit to prevent start-up until
the input voltage reaches 3 V; an internally or
externally set slow-start circuit to limit in-rush
currents; and a power good output useful for
processor/logic reset, fault signaling, and supply se-
quencing.
For reliable power up in output precharge appli-
cations, the TPS54073 is designed to only source
current during start-up.
The TPS54073 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD鈩?package, which
eliminates bulky heatsinks. TI provides evaluation
modules and the SWIFT鈩?designer software tool to
aid in quickly achieving high-performance power
supply designs to meet aggressive equipment devel-
opment cycles
START-UP WAVEFORM
WITH 3 PRECHARGE DIODES
RL = 1.5
W
APPLICATIONS
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Low-Voltage, High-Density Distributed Power
Systems
Point of Load Regulation for High-
Performance DSPs, FPGAs, ASICs, and
Microprocessors
Broadband, Networking, and Optical
Communications Infrastructure
Power PC Series Processors
TYPICAL APPLICATION
*
Voltage
Input 1
PVIN
PH
TPS54073
BOOT
PGND
VIN
VBIAS VSENSE
AGND COMP
*
*
Output
V
I/O
= 3.3 V
Voltage
Input 2
500 mV/div
V
(core)
= 1.5 V
*
Optional
t - Time - 5 ms/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.
SWIFT, PowerPAD are trademarks of Texas Instruments.
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 漏 2005, Texas Instruments Incorporated

TPS54073PWPR 產(chǎn)品屬性

  • Understanding SWIFT Step Down Dc/Dc Converters

  • 2,000

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • SWIFT™

  • 控制器

  • 1

  • 762kHz

  • 90%

  • 2.2 V ~ 4 V

  • 是

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • -40°C ~ 85°C

  • 28-SOIC（0.173"，4.40mm 寬）裸露焊盤

  • 帶卷 (TR)

  • 296-21155-ND - EVALUATION MODULE FOR TPS54073

TPS54073PWPR相關(guān)型號PDF文件下載

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    版本
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    廠商
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  • 英文版
    Thermopile Detector
    PERKINELMER
  • 英文版
    Thermopile Detector
    PERKINELMER&nbs...
  • 英文版
    Thermopile Detector
    PERKINELMER
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    Thermopile Detector
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    PROGRAMMABLE SYNCHRONOUS-BUCK REGULATOR CONTROLLER
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