Datasheet > TPS54426_10

TPS54426_10

更新时间： 2024-11-08 11:50:51

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
22页	657K
描述
4.5V to 18V Input, 4-A Synchronous Step-Down SWIFTâ¢ Converter with Eco-Modeâ¢

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TPS54426_10 数据手册

TPS54426

www.ti.com

SLVSAD6 –AUGUST 2010

4.5V to 18V Input, 4-A Synchronous Step-Down SWIFT™ Converter with Eco-Mode™

Check for Samples: TPS54426

FEATURES

DESCRIPTION

•

D-CAP2™ Mode Enables Fast Transient

Response

The TPS54426 is an adaptive on-time D-CAP2™

mode synchronous buck converter. The TPS54426

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

TPS54426 uses the D-CAP2™ mode control which

provides a very fast transient response with no

external compensation components. The adaptive

on-time control supports seamless transition between

PWM mode at higher load conditions and

Eco-mode™ operation at light loads. Eco-mode™

allows the TPS54426 to maintain high efficiency

during lighter load conditions. The TPS54426 also

has a proprietary circuit that enables the device to

adopt to both low equivalent series resistance (ESR)

output capacitors, such as POSCAP, 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 TPS54426 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

Auto-Skip Eco-mode™ for High Efficiency at

Light Load

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 (2 A/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.

D-CAP2, Eco-mode, 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.

12 3 4 5 6 7...22

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与TPS54426_10相关器件

型号	品牌	获取价格	描述	数据表
TPS54426PWP	TI	获取价格	4.5V to 18V Input, 4-A Synchronous Step-Down
TPS54426PWPR	TI	获取价格	4.5V to 18V Input, 4-A Synchronous Step-Down
TPS54426RSAR	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A 同步降压转换器 \| RSA
TPS54426RSAT	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 18V 输入、4A 同步降压转换器 \| RSA
TPS54427	TI	获取价格	4.5V to 18 V Input, 4-A Output Single Synchro
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

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