TPS54332

更新时间： 2024-09-16 12:16:15

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
26页	1105K
描述
3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-modeâ¢

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TPS54332 数据手册

TPS54332

www.ti.com

SLVS875B –JANUARY 2009–REVISED FEBRUARY 2012

3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-mode™

Check for Samples: TPS54332

FEATURES

APPLICATIONS

•

3.5V to 28V Input Voltage Range

•

Consumer Applications such as Set-Top

Boxes, CPE Equipment, LCD Displays,

Peripherals, and Battery Chargers

Adjustable Output Voltage Down to 0.8V

Integrated 80 mΩ High Side MOSFET Supports

up to 3.5A Continuous Output Current

•

Industrial and Car Audio Power Supplies

5V, 12V and 24V Distributed Power Systems

•

High Efficiency at Light Loads with a Pulse

Skipping Eco-mode™

DESCRIPTION

•

Fixed 1MHz Switching Frequency

The TPS54332 is a 28 V, 3.5 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 TPS54332 is

available in an 8-pin SOIC PowerPAD™ package.

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 Thermally Enhanced 8-Pin SOIC

PowerPAD™ Package

Supported by SwitcherPro™ Software Tool

(http://focus.ti.com/docs/toolsw/folders/print/s

witcherpro.html)

SIMPLIFIED SCHEMATIC

EFFICIENCY

100

Ren1

= 2.5 V

VIN

C_I

VIN

V = 5 V

Ren2

V = 12 V

TPS54332

C_BOOT

BOOT

L_O

VOUT

V = 15 V

C_O

R_O1

COMP

C₁

R₃

C_SS

C₂

VSENSE

GND

0.5

1.5

2.5

3.5

R_O2

- 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, SwitcherPro 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...26

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与TPS54332相关器件

型号	品牌	获取价格	描述	数据表
TPS543320	TI	获取价格	4V 至 18V、3A 同步 SWIFT™ 降压转换器
TPS543320RPYR	TI	获取价格	4V 至 18V、3A 同步 SWIFT™ 降压转换器 \| RPY \| 14 \| -40
TPS54332DDA	TI	获取价格	具有 Eco-mode 的 3.5V 至 28V 输入、3.5A、1MHz 降压转换器 \|
TPS54332DDAR	TI	获取价格	3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-mode
TPS54334	TI	获取价格	具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DDA	TI	获取价格	具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DDAR	TI	获取价格	具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DRCR	TI	获取价格	具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DRCT	TI	获取价格	具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54335	TI	获取价格	4.5V to 28V Input, 3A Output, Synchronous SWIFT Step-Down Voltage Regulator

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