LM5056A

LM5056, LM5056A www.ti.com SNVS827A – OCTOBER 2012 – REVISED APRIL 2013 High-Voltage System Power Management Device with PMBus™ Check for Samples: LM5056, LM5056A FEATURES 1 2 Input Voltage Range: 10 V to 80 V Real-Time Monitoring of VIN, IIN, PIN, VOUT, and VAUX with 12-bit resolution, 1-kHz sampling rate True input Power Measurement using simultaneous sampling of Vin and Iin Remote Temperature Sensing with programmable warning thresholds Power Measurement Accuracy – LM5056A: ±1.75% – LM5056: ±2.25% Current Measurement Accuracy – LM5056A: ±1.25% – LM5056: ±1.5% Voltage Measurement Accuracy: ±1.0% Averaging of VIN, IIN, PIN, and VOUT with Programmable Interval Ranging from 0.001 s to 4 s Programmable WARN and FAULT Thresholds with SMBA Notification Black-Box Capture of Telemetry Measurements and Device Status Triggered by WARN or FAULT Condition I2C/SMBus Interface and PMBus Compliant Command Structure APPLICATIONS Server Backplane Systems Base Station Power Distribution Systems Industrial Telemetry Applications DESCRIPTION The LM5056/LM5056A combines high-performance analog and digital technology with a PMBus™ compliant SMBus™ and I2C interface to accurately measure the electrical operating conditions of systems connected to a backplane power bus. The LM5056/LM5056A continuously supplies real-time power, voltage, current, temperature and fault data to the system management host via the SMBus interface. The LM5056/LM5056A monitoring block compu...