Catalog
17-V PMBus Current/Voltage/Power/Temperature Monitor
Key Features
• Input Voltage Range: 3V to 17VI2C/SMBus Interface with PMBus Compliant Command StructureRemote Temperature Sensing with Programmable Warning and Shutdown ThresholdsReal Time Monitoring of VIN, IIN, PIN, VAUXwith 12-bit Resolution and 1 kHz Sampling RateCurrent Measurement Error: ±0.5%: +10°C to +85°CVoltage Measurement Error: ±1.0%: +10°C to+85°CPower Measurement Error: ±1.5%: +10°C to +85°CTrue Input Power Measurement Using Simultaneous Sampling of VINand IINAccurately Averages Dynamic Power ReadingsAveraging of VIN, IIN, PIN, and VAUXOver Programmable Interval Ranging from 0.001 to 4 SecondsUser Programmable WARN and FAULT Thresholds withSMBANotificationBlack Box Capture of Telemetry Measurements and Device Status Triggered by WARN and FAULT ConditionsFull Featured Application Development SoftwareWQFN-24 PackageAll trademarks are the property of their respective owners.Input Voltage Range: 3V to 17VI2C/SMBus Interface with PMBus Compliant Command StructureRemote Temperature Sensing with Programmable Warning and Shutdown ThresholdsReal Time Monitoring of VIN, IIN, PIN, VAUXwith 12-bit Resolution and 1 kHz Sampling RateCurrent Measurement Error: ±0.5%: +10°C to +85°CVoltage Measurement Error: ±1.0%: +10°C to+85°CPower Measurement Error: ±1.5%: +10°C to +85°CTrue Input Power Measurement Using Simultaneous Sampling of VINand IINAccurately Averages Dynamic Power ReadingsAveraging of VIN, IIN, PIN, and VAUXOver Programmable Interval Ranging from 0.001 to 4 SecondsUser Programmable WARN and FAULT Thresholds withSMBANotificationBlack Box Capture of Telemetry Measurements and Device Status Triggered by WARN and FAULT ConditionsFull Featured Application Development SoftwareWQFN-24 PackageAll trademarks are the property of their respective owners.
Description
AI
The LM25056A 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 LM25056A continuously supplies real-time power, voltage, current, and temperature data to the system management host via the SMBus interface.
The LM25056A monitoring block captures both real-time and average values of subsystem operating parameters (VIN, IIN, PIN, VAUX) as well as peak power. Accurate power measurement is accomplished by measuring the product of the input voltage and current through a shunt resistor. LM25056A current measurement has a ±0.5% accuracy over the temperature range of +10°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.
The LM25056A 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 LM25056A continuously supplies real-time power, voltage, current, and temperature data to the system management host via the SMBus interface.
The LM25056A monitoring block captures both real-time and average values of subsystem operating parameters (VIN, IIN, PIN, VAUX) as well as peak power. Accurate power measurement is accomplished by measuring the product of the input voltage and current through a shunt resistor. LM25056A current measurement has a ±0.5% accuracy over the temperature range of +10°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.
