ADI LTC2977IUP

Контроллер/монитор источника питания3,3 В, 4,5 В ~ 15 В10 мА

Overview

 Sequence, Trim, Margin and Supervise Eight Power Supplies

 The LTC@2977 is an 8-channel Power System Manager used to sequence, trim(servo), margin, supervise, man-age faults, provide telemetry and create fault logs. PMBus commands support power supply sequencing, precision point-of-load voltage adjustmentand margining. DACs use a proprietary soft-connect algorithm to minimize supply disturbances. Supervisory functions include overvoltage and undervoltage threshold limits for eight power supply output channels and one power supply input channel, as well as over and under temperature limits. Programmable fault responses can disablethe power supplies with optionalretry after a fault is detected. Faults that disable a power supply can automatically trigger black boxEEPROM storage of fault status and associated telemetry. An internal 16-bit ADC monitors eight output voltages, one input voltage, and die temperature. In addition, odd numbered channels can be configured to measure the voltage across a current sense resistor.A programmable watchdog timer moni-tors microprocessor activity for a stalled condition andresets the microprocessor if necessary.A single wire bus synchronizes power supplies across multiple LTC power system management devices. Configuration EEPROM sup-ports autonomous operation without additional software.

Features