System Power Measurement-IC
LM25056
www.ti.com
SNVS784A – JANUARY 2012 – REVISED APRIL 2013
LM25056 System Power Measurement IC with PMBus
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Description
LM25056
www.ti.com
SNVS784A – JANUARY 2012 – REVISED APRIL 2013
LM25056 System Power Measurement IC with PMBus
Check for Samples: LM25056
FEATURES
1
234 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 VIN, IIN, PIN, VAUX with 12-bit Resolution and 1 kHz Sampling Rate
True Input Power Measurement Using Simultaneous Sampling of VIN and IIN Accurately Averages Dynamic Power Readings
Averaging of VIN, IIN, PIN, and VAUX Over 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
Full Featured Application Development Software
WQFN-24 Package
APPLICATIONS
Server Backplane Systems
Base Station Power Distribution Systems
Subsystem Power Measurement
DESCRIPTION
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 supplies real-time power, voltage, current, and temperature data to the system management host via the SMBus interface.
The LM25056 monitoring block captures both realtime and average values of subsystem operating par...
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