Datasheet > LM25056

LM25056

更新时间： 2024-11-14 12:21:39

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
33页	623K
描述
System Power Measurement IC with PMBusâ¢

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LM25056 数据手册

January 16, 2012

LM25056

System Power Measurement IC with PMBus™

General Description

Features

The LM25056 combines high performance analog and digital

technology with a PMBus™ compliant SMBus™/I²C interface

to accurately measure the operating conditions of electrical

systems including computing and storage blades connected

to a backplane power bus. The LM25056 continuously sup-

plies real-time power, voltage, current, and temperature data

to the system management host via the SMBus interface.

Input voltage range: 3V to 17V

■

I²C/SMBus™ interface with PMBus compliant command

structure

■

Remote temperature sensing with programmable warning

and shutdown thresholds

Real time monitoring of V_IN, I_IN, P_IN, V_AUXwith 12-bit

resolution and 1 kHz sampling rate

The LM25056 monitoring block captures both real-time and

average values of subsystem operating parameters (V_IN, I_IN,

P_IN, V_AUX) as well as peak power. Accurate power measure-

ment is accomplished by measuring the product of the input

voltage and current through a shunt resistor. LM25056 cur-

rent measurement has a ±1.5% accuracy over the tempera-

ture range of -40°C to +85°C with operation from -40°C to

+125°C. A black box (Telemetry/Fault Snapshot) function

captures and stores telemetry data and device status in the

event of a warning or a fault.

Current measurement error: ±1.5%: -40°C to +85°C

Voltage measurement error: ±1.5%: -40°C to +85°C

Power measurement error: ±3%: -40°C to +85°C

■

True input power measurement using simultaneous

sampling of V_INand I_INaccurately averages dynamic

power readings

Averaging of V_IN, I_IN, P_IN, and V_AUXover programmable

interval ranging from 0.001 to 4 seconds

User programmable WARN and FAULT thresholds with

SMBA notification

Black box capture of telemetry measurements and device

status triggered by WARN and FAULT conditions

■

PMBus is a trademark of SMIF, Inc. SMBus is a trademark of Intel Corp.

Full featured application development software

LLP-24 package

■

Applications

Server backplane systems

■

Base station power distribution systems

Subsystem power measurement

Typical Application Schematic

30152901

301529 SNVS784

www.ti.com

12 3 4 5 6 7...33

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与LM25056相关器件

型号	品牌	获取价格	描述	数据表
LM25056A	TI	获取价格	System Power Measurement IC with PMBusâ¢
LM25056APSQ	TI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC24, LLP-24, Power Management Circuit
LM25056APSQE	TI	获取价格	System Power Measurement IC with PMBusâ¢
LM25056APSQX	TI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC24, LLP-24, Power Management Circuit
LM25056APSQX/NOPB	TI	获取价格	17-V PMBus Current/Voltage/Power/Temperature Monitor 24-WQFN -40 to 125
LM25056PSQ	TI	获取价格	System Power Measurement IC with PMBusâ¢
LM25056PSQE	TI	获取价格	System Power Measurement IC with PMBusâ¢
LM25056PSQX	TI	获取价格	System Power Measurement IC with PMBusâ¢
LM2506	NSC	获取价格	Low Power Mobile Pixel Link (MPL) Level 0, 18-bit RGB Display Interface Serializer and Des
LM25061	NSC	获取价格	Positive Low Voltage Power Limiting Hot Swap Controller

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