TPS54073

更新时间： 2024-11-18 22:49:39

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
23页	1746K
描述
2.2 ?4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP

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TPS54073 数据手册

Typical Size

6,4 mm X 9,7 mm

TPS54073

www.ti.com

SLVS547–FEBRUARY 2005

2.2 – 4 -V, 14-A SYNCHRONOUS BUCK CONVERTER

WITH DISABLED SINKING DURING START-UP

FEATURES

DESCRIPTION

•

8-mΩ MOSFET Switches for High Efficiency at

14.5-A Peak Output Current

As a member of the SWIFT™family 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

•

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

output

filter

and

components;

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

•

Synchronizable to 700 kHz

Load Protected by Peak Current Limit and

Thermal Shutdown

currents; and

a power good output useful for

processor/logic reset, fault signaling, and supply se-

quencing.

•

Integrated Solution Reduces Board Area and

Total Cost

For reliable power up in output precharge appli-

cations, the TPS54073 is designed to only source

current during start-up.

APPLICATIONS

•

Low-Voltage, High-Density Distributed Power

Systems

The TPS54073 is available in a thermally enhanced

28-pin TSSOP (PWP) PowerPAD™ 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 devel-

opment cycles

•

Point of Load Regulation for High-

Performance DSPs, FPGAs, ASICs, and

Microprocessors

Broadband, Networking, and Optical

Communications Infrastructure

•

Power PC Series Processors

START-UP WAVEFORM

TYPICAL APPLICATION

WITH 3 PRECHARGE DIODES

= 1.5 W

Voltage

Input 1

Output

= 3.3 V

I/O

PVIN

TPS54073

BOOT

PGND

Voltage

Input 2

VIN

VBIAS

AGND COMP

VSENSE

= 1.5 V

(core)

t - Time - 5 ms/div

* Optional

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.

12 3 4 5 6 7...23

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与TPS54073相关器件

型号	品牌	获取价格	描述	数据表
TPS54073PWP	TI	获取价格	2.2 ?4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP
TPS54073PWPG4	TI	获取价格	用于预偏置输出的 3V 至 4V 输入、14A 同步降压转换器 \| PWP \| 28 \|
TPS54073PWPR	TI	获取价格	2.2 ?4 -V, 14-A SYNCHRONOUS BUCK CONVERTER WITH DISABLED SINKING DURING START-UP
TPS54073PWPRG4	TI	获取价格	3V to 4V Input, 14A Synchronous Step-Down SWI
TPS5410	TI	获取价格	1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5410_17	TI	获取价格	1-A, Wide Input Range, Step-Down Converter
TPS5410D	TI	获取价格	1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5410DG4	TI	获取价格	1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5410DR	TI	获取价格	1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER
TPS5410DRG4	TI	获取价格	1-A, WIDE INPUT RANGE, STEP-DOWN SWIFT CONVERTER

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