LTC2974 Datasheet | Analog Devices

4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement Features DESCRIPTION n Sequence, Trim, Margin and Supervise Four Power Supplies n Manage Faults, Monitor Telemetry and Create Fault Logs n PMBus™ pliant mand Set n Supported by LTpower Play® GUI n Margin or Trim Supplies to within 0.25% of Target n Fast OV/UV Supervisors Per Channel n Fast Output Current Supervisors Per Channel n Coordinate Sequencing and Fault Management Across Multiple LTC PSM Devices n Automatic Fault Logging to Internal EEPROM n Operate Autonomously without Additional Software n External Temperature and Input Voltage Supervisors n Accurate Monitoring of Four Output Voltages, Four Output Currents, Four External Temperatures, Input Voltage and Internal Die Temperature n I2C/SMBus Serial Interface n Can Be Powered from 3.3V, or 4.5V to 15V n Available in 64-Lead 9mm × 9mm QFN Package n AEC-Q100 Qualified for Automotive Applications APPLICATIONS n puters and Network Servers n Industrial Test and Measurement n High Reliability Systems n Medical Imaging n Video The LTC®2974 is a 4-channel Power System Manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs. PMBus mands 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 over and under current, voltage and temperature threshold limits for four power supply output channels as well as over and under voltage threshold limits for a single power supply input channel. Programmable fault responses can disable the power supplies with optional retry after a fault is detected. Faults that disable a power supply can automatically trigger black box EEPROM storage of fault status and associated telemetry. An internal 16-bit ADC monitors four output voltages, four output currents, four external...