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Analog Devices / Maxim Integrated MAX34451 Power-Supply System Manager

Analog Devices MAX34451 Power-Supply System Manager can monitor up to 16 voltage rails or currents. The Analog Devices device can also sequence and margin up to 12 power supplies. This system manager monitors the power supply output voltages and currents. The manager constantly checks them for user-programmable over and under threshold limits. If a fault is detected, the device automatically shuts down the system orderly. The MAX34451 can sequence the supplies in any order at power-up and power-down. The device can close-loop margin the power-supply output voltages up or down to a user-programmable level. This device contains an internal temperature sensor and can support up to four external remote temperature sensors. Once configured, the device can operate autonomously without any host intervention.

Features

  • Integration Enables Management of Multiple Power Supplies to Maximize System Performance
    • 16 Channels of Voltage or Current Monitoring
    • 12 Channels of Sequencing and Margining (8 PWM, 4 External Current DACs (1xDS4424), and Sequencing
    • Expandable Channel Operation with Parallel Devices
    • Remote Ground Sensing Improves Measurement Accuracy
    • Programmable Up and Down Time-Based or Event-Based Sequencing
    • Dual Sequencing Loops
    • Configurable Combinatorial Logic Supporting Up to 16 GPIs and 20 GPOs
    • Automatic Closed-Loop Margining
    • No External Clocking Required
    • PMBus™ -Compliant Command Interface
  • Fast, Reliable Control and Fault Detection Improves System Reliability
    • Fast Minimum/Maximum Threshold Excursion Detection
    • Supports Up to 5 Temperature Sensors (1 Internal and 4 Remote)
    • Fault Detection on All Temperature Sensors
    • Reports Peak, Minimum, and Average Levels for a Number of Parameters
    • Programmable Alarm Outputs
    • On-Board Nonvolatile Black Box Fault Logging and Default Configuration Setting
    • I2C-/SMBus-Compatible Serial Bus with Bus Time-Out Function Simplifies Additional Temperature Sensors and DACs to the MAX34451
    • +3.0V to +3.6V Supply Voltage

Applications

  • Base Stations
  • Network Switches/Routers
  • Servers
  • Smart Grid Network Systems
Publicado: 2016-09-06 | Actualizado: 2023-04-12