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UCD90910

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10-Rail Sequencer and System Health Monitor with Integrated 10-Channel Fan Controller

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Data sheet

UCD90910

ACTIVE
Data sheet Order now

Product details

Supply voltage (min) (V) 3 Number of supplies monitored 10 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 10 Rating Catalog Operating temperature range (°C) -40 to 125
Supply voltage (min) (V) 3 Number of supplies monitored 10 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 10 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGC) 64 81 mm² 9 x 9
  • Monitor and Sequence Ten Voltage Rails
    • All Rails Sampled Every 400 µs
    • 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 Ten Fans With Five User-Defined Speed-vs-Temperature Setpoints
    • Supports Two-, Three-, and Four-Wire Fans
  • Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Faults)
  • Closed-Loop Margining for Ten Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Multiphase PWM Clock Generator
    • Clock Frequencies From 15.259 kHz to 125 MHz
    • Capability to Configure Independent Clock Outputs for Synchronizing Switch-Mode Power Supplies
  • Internal Temperature Sensor
  • JTAG and I2C / SMBus / PMBus Interfaces
  • Full Configuration Update while in Normal Mode Capability
  • APPLICATIONS
    • Industrial / ATE
    • Telecommunications and Networking Equipment
    • Servers and Storage Systems
    • Any System Requiring Sequencing and Monitoring of Multiple Power Rails
  • Monitor and Sequence Ten Voltage Rails
    • All Rails Sampled Every 400 µs
    • 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 Ten Fans With Five User-Defined Speed-vs-Temperature Setpoints
    • Supports Two-, Three-, and Four-Wire Fans
  • Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Faults)
  • Closed-Loop Margining for Ten Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Multiphase PWM Clock Generator
    • Clock Frequencies From 15.259 kHz to 125 MHz
    • Capability to Configure Independent Clock Outputs for Synchronizing Switch-Mode Power Supplies
  • Internal Temperature Sensor
  • JTAG and I2C / SMBus / PMBus Interfaces
  • Full Configuration Update while in Normal Mode Capability
  • APPLICATIONS
    • Industrial / ATE
    • Telecommunications and Networking Equipment
    • Servers and Storage Systems
    • Any System Requiring Sequencing and Monitoring of Multiple Power Rails

The UCD90910 is a ten-rail I2C / PMBus 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. Twelve of these pins offer PWM functionality. Using these pins, the UCD90910 offers support for fan control, margining, and general-purpose PWM functions.

Fan-control signals can be sent using PMBus commands or generated from one of two built-in fan-control algorithms. PWM outputs combined with temperature and fan-speed measurements provide a complete fan-control solution for up to ten independent fans.

The TI Fusion Digital Power designer software is provided for device configuration. This PC-based graphical user interface (GUI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.

The UCD90910 is a ten-rail I2C / PMBus 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. Twelve of these pins offer PWM functionality. Using these pins, the UCD90910 offers support for fan control, margining, and general-purpose PWM functions.

Fan-control signals can be sent using PMBus commands or generated from one of two built-in fan-control algorithms. PWM outputs combined with temperature and fan-speed measurements provide a complete fan-control solution for up to ten independent fans.

The TI Fusion Digital Power designer software is provided for device configuration. This PC-based graphical user interface (GUI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.
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The most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs

Technical documentation

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Type Title Date
* Data sheet 10-Rail Sequencer and System Health Monitor with 10-Fan Control datasheet 22 Jul 2010
Application note UCD90xxx Family Frequently Asked Questions and Answers (Rev. B) 12 Apr 2019
User guide UCD90xxx Sequencer and System Health Controller PMBus™ Command Reference (Rev. G) 03 Apr 2019
User guide UCD90xxx Sequencer Schematics Guidelines (Rev. C) PDF | HTML 24 Mar 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note How to Cascade Multiple UCD90xxx Sequencers 10 Aug 2017
User guide Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer 31 May 2017
Application note Monitoring Voltage, Current and Temperature Using the UCD9012x 23 Mar 2012
User guide UCD90SEQ64EVM-650: 64-Pin Sequencer Development Board 27 Dec 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

UCD90SEQ64EVM-650 — Evaluation Module for UCD90xxx 64-pin Sequencer and System Health Monitor

The UCD90SEQ64EVM-650 is a fully assembled and tested circuit for evaluating the 64-pin Sequencer and System Health Controller, including the UCD90120, UCD90124, UCD90120A, UCD90124A, UCD90910 and UCD90160.

User guide: PDF
Not available on TI.com
Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
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Application software & framework

FUSION_MFR_GUI — Fusion Digital Power Manufacturing Tool

The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .

The MFR GUI supports the same devices as Fusion Digital Power Designer software.  This tool is typically used in manufacturing (...)

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Simulation model

UCD90910 BSDL

SLVC320.ZIP (2 KB) - BSDL Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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VQFN (RGC) 64 View options
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