Datasheet > TPS51219_14

TPS51219_14

更新时间： 2024-11-27 02:58:19

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
36页	945K
描述
High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedback

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TPS51219_14 数据手册

TPS51219

www.ti.com

SLUSAG1B –MARCH 2011–REVISED OCTOBER 2011

High Performance, Single-Synchronous Step-Down Controller

with Differential Voltage Feedback

FEATURES

DESCRIPTION

The TPS51219 is a small-sized single buck controller

•

Differential Voltage Feedback

with adaptive on-time control. It provides a choice of

control modes (D-CAP™ or D-CAP2™) to meet a

wide range of system requirements. It is designed for

tight DC regulation requirements such as the VCCIO

application for Intel^®notebooks. The performance

and flexibility of the TPS51219 makes it suitable for

low output voltage, high current, PC system power

rails and similar point-of-load (POL) power supplies.

Differential voltage feedback and the voltage

compensation function combine to provide high

precision power to load devices.

•

DC Compensation for Accurate Regulation

Wide Input Voltage Range: 3 V to 28 V

•

Output Voltage Range: 0.5 V to 2.0 V with

Fixed Options of 1.05 V and 1.00 V

•

Wide Output Load Range: 0 A to 20 A+

Adaptive On-Time Modulation with Selectable

Control Architecture and Frequency

–

D-CAP™ Mode at 300 kHz/400 kHz for Fast

Transient Response

A small package, fixed voltage options and minimal

external component count saves cost and space,

while a dedicated EN pin and pre-set frequency

selections minimize design effort. The skip-mode at

light load condition, strong gate drivers, and low-side

FET R_DS(on)current sensing provides high efficiency

operation over a broad load range. The external

resistor current sense option enables accurate

current sensing. The conversion input voltage (the

high-side FET drain voltage) ranges from 3 V to 28 V

and output voltage ranges from 0.5 V to 2.0 V. The

device requires an external 5-V supply.

–

D-CAP2™ Mode at 500 kHz/670 kHz for

Ceramic Output Capacitor

•

4700 ppm/°C, Low-Side R_DS(on)Current Sensing

R_SENSEAccurate Current Sense Option

Internal, 1-ms Voltage Servo Softstart

Built-In Output Discharge

Power Good Output

Integrated Boost Switch

Built-In OVP/UVP/OCP

Thermal Shutdown (Non-latched)

3 mm × 3 mm, 16-Pin, QFN (RTE) Package

The TPS51219 is available in a 16-pin, QFN package

and is specified for ambient temperature from -40°C

to 85°C.

APPLICATIONS

•

Notebook Computers

I/O Supplies

V_IN

V5IN

PGOOD

SW 12

VREF

DH 11

REFIN

V_OUT

TPS51219RTE

GSNS

VSNS

GSNS

VSNS

DL 10

UDG-11006

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-CAP, D-CAP2 are trademarks of Texas Instruments.

Intel is a registered trademark of Intel.

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...36

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与TPS51219_14相关器件

型号	品牌	获取价格	描述	数据表
TPS51219RTER	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51219RTET	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51220	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220A	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220A-Q1	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220ARSNR	TI	获取价格	采用 RSN/RTV 封装的适用于笔记本电脑电源的 3V 至 28V 同步峰值电流模式降压
TPS51220ARSNT	TI	获取价格	Fixed-frequency, 99% duty cycle peak current-mode notebook system power controller 32-QFN
TPS51220ARTVR	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220ARTVT	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220ATRTVRQ1	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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