TPS54531

更新时间： 2024-11-08 12:01:47

品牌	Logo	应用领域
德州仪器 - TI		转换器输入元件
页数	文件大小	规格书
27页	1284K
描述
5A, 28V INPUT, STEP DOWN SWIFTâ¢ DC/DC CONVERTER WITH ECO-modeâ¢

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TPS54531 数据手册

TPS54531

www.ti.com

SLVSBI5 –MAY 2013

5A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERTER WITH ECO-mode™

Check for Samples: TPS54531

FEATURES

DESCRIPTION

The TPS54531 is a 28-V, 5-A non-synchronous buck

converter that integrates a low R_DS(on)high side

MOSFET. To increase efficiency at light loads, a

pulse skipping Eco-mode™ feature is automatically

activated. Furthermore, the 1 μA shutdown supply

current allows the device to be used in battery

powered applications. Current mode control with

internal slope compensation simplifies the external

compensation calculations and reduces component

count while allowing the use of ceramic output

capacitors. A resistor divider programs the hysteresis

of the input under-voltage lockout. An overvoltage

transient protection circuit limits voltage overshoots

during startup and transient conditions. A cycle by

cycle current limit scheme, frequency fold back and

thermal shutdown protect the device and the load in

the event of an overload condition. The TPS54531 is

available in 8-pin SOIC PowerPAD^TMpackage that

have been internally optimized to improve thermal

performance.

•

3.5V to 28V Input Voltage Range

•

Adjustable Output Voltage Down to 0.8V

Integrated 80 mΩ High Side MOSFET Supports

up to 5A Continuous Output Current

•

High Efficiency at Light Loads with a Pulse

Skipping Eco-mode™

•

Fixed 570kHz Switching Frequency

Typical 1μA Shutdown Quiescent Current

Adjustable Slow Start Limits Inrush Currents

Programmable UVLO Threshold

Overvoltage Transient Protection

Cycle-by-Cycle Current Limit, Frequency Fold

Back and Thermal Shutdown Protection

•

Available in Easy-to-Use Thermally Enhanced

SOIC8 PowerPAD^TMPackage

APPLICATIONS

•

Consumer Applications such as Set-Top

Boxes, CPE Equipment, LCD Displays,

Peripherals, and Battery Chargers

•

Industrial and Car Audio Power Supplies

5V, 12V and 24V Distributed Power Systems

SIMPLIFIED SCHEMATIC

EFFICIENCY

TPS54531

Ren1

100

VIN

C_I

VIN

Ren2

TPS54531

C_BOOT

BOOT

L_O

V_IN= 12 V

V_IN= 24 V

OUT

C_O

R_O1

COMP

C₁

R₃

C_SS

C₂

VSENSE

GND

R_O2

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

C007

Output Current - A

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.

Eco-mode, 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...27

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与TPS54531相关器件

型号	品牌	获取价格	描述	数据表
TPS54531DDA	TI	获取价格	5A, 28V INPUT, STEP DOWN SWIFTâ¢ DC/DC CONVE
TPS54531DDAR	TI	获取价格	5A, 28V INPUT, STEP DOWN SWIFTâ¢ DC/DC CONVE
TPS54540	TI	获取价格	4.5 V to 42 V Input, 5 A, Step Down DC-DC Con
TPS54540B	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A 降压转换器
TPS54540BDDA	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A 降压转换器 \| DDA \|
TPS54540BDDAR	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A 降压转换器 \| DDA \|
TPS54540B-Q1	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A、降压直流/直流转换器
TPS54540BQDDAQ1	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A、降压直流/直流转换器 \|
TPS54540BQDDARQ1	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 42V 输入、5A、降压直流/直流转换器 \|
TPS54540DDA	TI	获取价格	具有 Eco-Mode 的 42V、5A 降压直流/直流转换器 \| DDA \| 8 \| 0

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