Datasheet > LTC2978AIUPPBF

LTC2978AIUPPBF

更新时间： 2024-11-23 12:00:59

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
80页	891K
描述
8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LTC2978AIUPPBF 数据手册

LTC2978A

8-Channel PMBus Power

System Manager Featuring Accurate

Output Voltage Measurement

DescripTion

FeaTures

Sequence,Trim, Margin and Supervise Eight Power Supplies The LTC^®2978A is an 8-channel Power System Manager

Manage Faults, Monitor Telemetry and Create Fault Logs

PMBus Compliant Command Set

used to sequence, trim (servo), margin, supervise, man-

age faults, provide telemetry and create fault logs. PMBus

commands support power supply sequencing, precision

point-of-load voltage adjustment and margining. DACs use

a proprietary soft-connect algorithm to minimize supply

disturbances. Supervisory functions include overvoltage

and undervoltage threshold limits for eight power supply

output channels and one power supply input channel, as

well as over and under temperature limits. Programmable

faultresponsescandisablethepowersupplieswithoptional

retry after a fault is detected. Faults that disable a power

supplycanautomaticallytriggerblackboxEEPROMstorage

of fault status and associated telemetry. An internal 16-bit

ADC monitors eight output voltages, one input voltage,

and die temperature. In addition, odd numbered chan-

nels can be configured to measure the voltage across a

current sense resistor. A programmable watchdog timer

monitorsmicroprocessoractivityforastalledconditionand

resets the microprocessor if necessary. A single wire bus

synchronizes power supplies across multiple LTC power

system management devices. Configuration EEPROM sup-

ports autonomous operation without additional software.

Supported by LTpowerPlay™ GUI

Margin or Trim Supplies to 0.25% Accuracy

Fast OV/UV Supervisors per Channel

Coordinate Sequencing and Fault Management

Across Multiple Chips

Automatic Fault Logging to Internal EEPROM

Operate Autonomously without Additional Software

Internal Temperature and Input Voltage Supervisors

Accurate Monitoring of Eight Output Voltages, Input

Voltage and Internal Die Temperature

I C/SMBus Serial Interface

Can Be Powered from 3.3V, or 4.5V to 15V

Programmable Watchdog Timer

100% Compatible with the LTC2978

Available in 64-pin 9mm × 9mm QFN Package

applicaTions

Computers and Network Servers

Industrial Test and Measurement

High Reliability Systems

Medical Imaging

Video

L, LT, LTC, LTM, PolyPhase, Linear Technology and the Linear logo are registered trademarks and

LTpowerPlay ia a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners. Protected by U.S. Patents including 7382303, 7420359 and 7940091.

Typical applicaTion

Typical ADC Total Unadjusted

Error vs Temperature

8-Channel PMBus Power System Manager

0.035

4.5V < V

IBUS

< 15V**

ADC V = 1.8V

0.030

0.025

IN_SNS

PWR

OUT

3.3V**

DIGITALLY

DD33

DACP0

MANAGED

POWER

R30

SENSEP0

TO INTERMEDIATE

BUS CONVERTER ENABLE

IN_EN

R20

R10

SUPPLY

0.020

0.015

0.010

0.005

LTC2978A*

SDA

LOAD

SCL

PMBus

INTERFACE

DACM0

ALERTB

SENSEM0

SGND

CONTROL0

RUN/SS

OUT_EN0

GND

WRITE-PROTECT

PWRGD

TO µP RESETB INPUT

WDI/RESETB

ASEL0

WATCHDOG

–50

–5

25 40 55 70 85 100

–35 –20

TIMER INTERRUPT

FAULTB00

TO/FROM OTHER

LTC2978s

TEMPERATURE (°C)

SHARE_CLK

ASEL1

*SOME DETAILS OMITTED FOR CLARITY

ONLY ONE OF EIGHT CHANNELS SHOWN

2978a TA01b

GND

2978a TA01a

**LTC2978A MAY BE POWERED FROM EITHER AN

EXTERNAL 3.3V SUPPLY OR THE INTERMEDIATE BUS

2978af

For more information www.linear.com/LTC2978A

12 3 4 5 6 7...80

中文翻译

下载PDF

与LTC2978AIUPPBF相关器件

型号	品牌	获取价格	描述	数据表
LTC2978CUPPBF	Linear	获取价格	Octal PMBus Power Supply Monitor and Controller with EEPROM
LTC2978CUPTRPBF	Linear	获取价格	Octal PMBus Power Supply Monitor and Controller with EEPROM
LTC2978IUPPBF	Linear	获取价格	Octal PMBus Power Supply Monitor and Controller with EEPROM
LTC2978IUPTRPBF	Linear	获取价格	Octal PMBus Power Supply Monitor and Controller with EEPROM
LTC2979	ADI	获取价格	16 通道 PMBus 低电压电源系统管理器
LTC2980	ADI	获取价格	16 通道 PMBus 电源系统管理器
LTC2980-24	ADI	获取价格	24通道PMBus电源系统管理器
LTC2983	ADI	获取价格	多传感器高准确度数字温度测量系统
LTC2984	ADI	获取价格	具有 EEPROM 的多传感器高准确度数字温度测量系统
LTC2986	ADI	获取价格	具有EEPROM的多传感器高精度数字温度测量系统

与LTC2978AIUPPBF相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

36
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

28
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

56
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

53

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC2978AIUPPBF

LTC2978AIUPPBF 数据手册

与LTC2978AIUPPBF相关器件

与LTC2978AIUPPBF相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LTC2978AIUPPBF

LTC2978AIUPPBF 数据手册

与LTC2978AIUPPBF相关器件

与LTC2978AIUPPBF相关文章

您还可以找

您在本页遇到什么问题？