Datasheet > TPS54425_10

TPS54425_10

更新时间： 2022-09-17 20:20:55

品牌	Logo	应用领域
德州仪器 - TI		输出元件
页数	文件大小	规格书
22页	641K
描述
4-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET ( SWIFT?)

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TPS54425_10 数据手册

TPS54425

www.ti.com

SLVSA84 –AUGUST 2010

4-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER

WITH INTEGRATED FET ( SWIFT™)

Check for Samples: TPS54425

FEATURES

DESCRIPTION

•

D-CAP2™ Mode Enables Fast Transient

Response

The TPS54425 is an adaptive on-time D-CAP2™

mode synchronous buck converter. The TPS54425

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. The main control loop for the

TPS54425 uses the D-CAP2™ mode control which

provides a very fast transient response with no

external compensation components. The TPS54425

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. The

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

output voltage can be programmed between 0.76 V

and 5.5 V. The device also features an adjustable

soft start time and a power good function. The

TPS54425 is available in the 14-pin HTSSOP

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

85°C.

•

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 5.5 V

Highly Efficient Integrated FET’s Optimized

for Lower Duty Cycle Applications

– 65 mΩ (High Side) and 55 mΩ (Low Side)

•

High Efficiency, less than 10 mA at shutdown

High Initial Bandgap Reference Accuracy

Adjustable Soft Start

Pre-Biased Soft Start

700-kHz Switching Frequency (f_SW

)

Cycle By Cycle Over Current Limit

Power Good Output

APPLICATIONS

•

Wide Range of Applications for Low Voltage

System

–

Digital TV Power Supply

High Definition Blu-ray Disc™ Players

Networking Home Terminal

Digital Set Top Box (STB)

Vout (50 mV/div)

Iout (2A/div)

100 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, D-CAP2, PowerPAD are trademarks 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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