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UCD90124 - 12-Rail Sequencer and System Health Monitor

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General Description

The UCD90124 is a 12-rail PMBus/I2C addressable power-supply sequencer and system-health monitor.

The device integrates a 12-bit ADC for monitoring up to 13 power-supply voltage, current, or temperature inputs.

Twenty-six GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading, or other system functions.

Overview

www.ti.com UCD90124 SLVSA29B – NOVEMBER 2009 – REVISED SEPTEMBER 2010 12-Rail Sequencer and System Health Monitor With Fan Control Check for Samples:.

Key Features

  • 1.
  • 2 Monitor and Sequence 12 Voltage Rails.
  • All Rails Sampled Every 400 ms.
  • 12-bit ADC With 2.5-V, 0.5% Internal VREF.
  • Sequence Based on Time, Rail and Pin Dependencies.
  • Four Programmable Undervoltage and Overvoltage Thresholds per Monitor.
  • Fan Control and Monitoring.
  • Supports Four Fans With Five User-Defined Speed-vs-Temperature Setpoints.
  • Supports Two-, Three-, and Four-Wire Fans.
  • Nonvolatile Error and Peak-Value L.

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