TPS40422

更新时间： 2024-11-05 07:20:07

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
54页	921K
描述
Dual-Output or Two-Phase Synchronous Buck Controller with PMBus

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TPS40422 数据手册

TPS40422

www.ti.com

SLUSAQ4B –OCTOBER 2011–REVISED JUNE 2012

Dual-Output or Two-Phase Synchronous Buck Controller with PMBus

Check for Samples: TPS40422

FEATURES

APPLICATIONS

•

Single Supply Operation: 4.5 V to 20 V

Output Voltage from 0.6 V to 5.6 V

•

Multiple Rail Systems

Telecom Base Station

Dual or Two-Phase Synchronous Buck

Controller

Switcher/Router Networking

Server and Storage System

•

PMBus Capability

DESCRIPTION

The TPS40422 is a dual-output PMBus synchronous

buck controller. It can be configured also for a single,

two-phase output.

–

Margining Up/Down with 2-mV Step

Programmable Fault Limit and Response

Output Voltage, Output Current Monitoring

External Temperature Monitoring with

2N3904

Its wide input range can support 5-V and 12-V

intermediate buses. The accurate reference voltage

satisfies the need of precision voltage to the modern

ASICs and potentially reduces the output

capacitance. Voltage mode control is implemented to

reduce noise sensitivity and also ensures low duty

ratio conversion.

–

Programmable UVLO ON/OFF Thresholds

Programmable Soft Start Time and Turn

On/Off Delay

•

On-Chip Non-volatile Memory (NVM) to Store

Custom Configurations

Using the PMBus protocol, the TPS40422 margining

function, reference voltage, fault limit, UVLO

threshold, soft start time and turn on/off delay can be

programmed.

•

180° Out-of-Phase to Reduce Input Ripple

600-mV Reference Voltage with ±0.5%

Accuracy from 0°C to 85°C

•

Inductor DCR Current Sensing

In addition, an accurate measurement system is

implemented to monitor the output voltages, currents

and temperatures for each channel.

Programmable Switching Frequency from

200 kHz to 1 MHz

•

Voltage Mode Control with Input Feed Forward

Current Sharing for Multiphase Operation

Supports Pre-biased Output

Differential Remote Sensing

External SYNC

BPEXT Pin Boosts Efficiency by Supporting

External Bias Power

•

OC/OV/UV/OT Fault Protection

40-Pin, 6 mm × 6 mm, QFN Package

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.

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...54

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TPS40422 替代型号

型号	品牌	替代类型	描述	数据表
TPS40322	TI	功能相似	Dual Output or Two-Phase Synchronous Buck Controller
TPS40400	TI	功能相似	3.0-V TO 20-V PMBus SYNCHRONOUS BUCK CONTROLLER

与TPS40422相关器件

型号	品牌	获取价格	描述	数据表
TPS40422RHA	TI	获取价格	Using the PWR091EVM Dual-Output DC/DC Analog With PMBus Interface
TPS40422RHAR	TI	获取价格	Dual-Output or Two-Phase Synchronous Buck Controller with PMBus
TPS40422RHAT	TI	获取价格	Dual-Output or Two-Phase Synchronous Buck Controller with PMBus
TPS40422RSBR	TI	获取价格	具有 PMBus 的双输出或多相同步降压控制器 \| RSB \| 40 \| -40 to 1
TPS40422RSBT	TI	获取价格	具有 PMBus 的双输出或多相同步降压控制器 \| RSB \| 40 \| -40 to 1
TPS40425	TI	获取价格	TPS40425 Dual Output, 2-Phase, Stackable PMBu
TPS40425_15	TI	获取价格	TPS40425 Dual Output, 2-Phase, Stackable PMBu
TPS40425RHAR	TI	获取价格	TPS40425 Dual Output, 2-Phase, Stackable PMBu
TPS40425RHAT	TI	获取价格	TPS40425 Dual Output, 2-Phase, Stackable PMBu
TPS40428	TI	获取价格	TPS40428 Dual Output, 2-Phase, Stackable PMBu

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