Datasheet > TPS54427

TPS54427

更新时间： 2024-12-01 12:16:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
21页	964K
描述
4.5V to 18 V Input, 4-A Output Single Synchronous Step-Down Switcher with Integrated FET (SWIFTâ¢)

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TPS54427 数据手册

TPS54427

www.ti.com

SLVSB43 –NOVEMBER 2011

4.5V to 18 V Input, 4-A Output Single Synchronous Step-Down Switcher with Integrated

FET (SWIFT™)

Check for Samples: TPS54427

FEATURES

DESCRIPTION

The TPS54427 is an adaptive on-time D-CAP2™

mode synchronous buck converter. The TPS54427

enables system designers to complete the suite of

various end equipment’s power bus regulators with a

cost effective, low component count, low standby

current solution.

•

D-CAP2™ Mode Enables Fast Transient

Response

•

Low Output Ripple and Allows Ceramic Output

Capacitor

•

Wide V_INInput Voltage Range: 4.5 V to 18 V

Output Voltage Range: 0.76 V to 7.0 V

The main control loop for the TPS54427 uses the

D-CAP2™ mode control which provides

a fast

Highly Efficient Integrated FETs Optimized

for Lower Duty Cycle Applications

– 70 mΩ (High Side) and 53 mΩ (Low Side)

transient response with no external compensation

components.

The TPS54427 also has a proprietary circuit that

enables the device to adopt to both low equivalent

series resistance (ESR) output capacitors, such as

POSCAP or SP-CAP, and ultra-low ESR ceramic

capacitors.

•

High Efficiency, Less Than 10 μA at Shutdown

High Initial Bandgap Reference Accuracy

Adjustable Soft Start

Pre-Biased Soft Start

650-kHz Switching Frequency (f_SW

)

The device operates from 4.5-V to 18-V VIN input.

The output voltage can be programmed between

0.76 V and 7 V.

Cycle By Cycle Over Current Limit

APPLICATIONS

The device also features an adjustable soft start time.

•

Wide Range of Applications for Low Voltage

System

The TPS54427 is available in the 8-pin DDA

package, and designed to operate from –40°C to

85°C.

–

Digital TV Power Supply

High Definition Blu-ray Disc™ Players

Networking Home Terminal

Digital Set Top Box (STB)

Vout(50mV/div)

TPA54427DDA

Iout(2A/div)

100us/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.

D-CAP2 is a trademark of Texas Instruments.

Blu-ray Disc is a trademark of Blu-ray Disc Association.

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.

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与TPS54427相关器件

型号	品牌	获取价格	描述	数据表
TPS54427DDA	TI	获取价格	4.5V to 18 V Input, 4-A Output Single Synchro
TPS54427DDAR	TI	获取价格	4.5V to 18 V Input, 4-A Output Single Synchro
TPS54427DRCR	TI	获取价格	4.5V 至 18V 输入，4A 同步降压转换器 \| DRC \| 10 \| -40 to
TPS54427DRCT	TI	获取价格	4.5V 至 18V 输入，4A 同步降压转换器 \| DRC \| 10 \| -40 to
TPS54428	TI	获取价格	4.5V to 18 V Input, 4-A Synchronous Step-Down
TPS54428DDA	TI	获取价格	4.5V to 18 V Input, 4-A Synchronous Step-Down
TPS54428DDAR	TI	获取价格	4.5V to 18 V Input, 4-A Synchronous Step-Down
TPS54428DRCR	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A SWIFT™ 同步降压转换
TPS54428DRCT	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A SWIFT™ 同步降压转换
TPS54429	TI	获取价格	7V to 18V Input, 4.5-A Synchronous Step-Down ( SWIFT?) Converter

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