Datasheet > TPS56121_14

TPS56121_14

更新时间： 2024-11-21 02:58:27

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德州仪器 - TI		/
页数	文件大小	规格书
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4.5-V to 14-V Input High-Current Synchronous Buck Converter

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TPS56121_14 数据手册

TPS56121

www.ti.com

SLUSAH4 –MARCH 2011

4.5-V to 14-V Input High-Current Synchronous Buck Converter

Check for Samples: TPS56121

FEATURES

DESCRIPTION

•

4.5-V to 14-V Input Voltage Range

Incorporates Power Block Technology

Up to 15-A Output Current

TPS56121 is

a high-efficiency and high-current

synchronous buck converter designed to operate

from a supply between 4.5 V and 14 V. The device is

capable of producing an output voltage as low as

0.6 V at loads up to 15 A. Integrated NexFET™

Power MOSFETs provide a small foot print and ease

of use.

Fixed Frequency Options of 300 kHz, 500 kHz

and 1 MHz

•

High-Side and Low-Side MOSFET R_DS(on)

Sensing

The device implements a voltage-mode control with

voltage feed-forward compensation that responds

instantly to input voltage change.

•

Programmable Soft-Start

600-mV Reference Voltage with 1% Accuracy

Voltage Mode Control with Feed-Forward

Supports Pre-Biased Output

TPS56121 is available in a thermally enhanced

22-pin PQFN (DQP) PowerPAD™ package.

Thermal Shutdown

The device offers design flexibility with a variety of

user programmable functions, including soft-start,

overcurrent protection (OCP) levels, and loop

compensation. OCP levels are programmed by a

single external resistor connected from the ILIM pin to

the circuit ground. During the initial power-on

sequence, the device enters a calibration cycle,

measures the voltage at the ILIM pin, and sets an

internal OCP voltage level. During operation, the

programmed OCP voltage level is compared to the

voltage drop across the low-side FET when it is on to

determine whether there is an overcurrent condition.

It then enters a shutdown/restart cycle until the fault

is removed.

22-Pin 5 mm x 6 mm PQFN PowerPAD™

Package

APPLICATIONS

•

Point-of-Load (POL) Power Modules

•

High Density DC-DC Converters for Telecom

and Networking Applications

SIMPLIFIED APPLICATION

TPS56121

V_OUT

VIN

BOOT

V_IN

COMP

PGD

EN/SS

VDD

V_OUT

ILIM

V_IN

GND

UDG-11047

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.

PowerPAD, NexFET 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...22

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与TPS56121_14相关器件

型号	品牌	获取价格	描述	数据表
TPS56121_16	TI	获取价格	Input High-Current Synchronous Buck SWIFT Converter
TPS56121_17	TI	获取价格	4.5-V to 14-V Input High-Current Synchronous Buck SWIFT Converter
TPS56121DQPR	TI	获取价格	4.5-V to 14-V Input High-Current Synchronous Buck Converter
TPS56121DQPT	TI	获取价格	4.5-V to 14-V Input High-Current Synchronous Buck Converter
TPS5615	TI	获取价格	SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER
TPS5615/TPS5618/TPS5625/TPS5633	ETC	获取价格	Synchronous-Buck Hysteretic Regulator Controller
TPS5615CPWPR	ETC	获取价格	Voltage-Mode SMPS Controller
TPS5615PWP	TI	获取价格	SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER
TPS5615PWPR	TI	获取价格	SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER
TPS5618	TI	获取价格	SYNCHRONOUS-BUCK HYSTERETIC REGULATOR CONTROLLER

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