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 most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | 10-Rail Sequencer and System Health Monitor with 10-Fan Control datasheet | 22 Jul 2010 |
| Technical article | 3 quiescent-current (Iq) specifications you need to understand | 12 Nov 2021 | |
| 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) | 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 | |
| Technical article | Sequencing and managing multiple power rails in a system: common questions answered | 01 Feb 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 |
For additional terms or required resources, click any title below to view the detail page where available.
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.
This EVM serves as an interface adapter or a bridge between a host PC (IBM™ compatible) and one or multiple slave devices via a standard type-A to mini-B USB cable. The communication between the USB interface adapter and the host PC is via USB, while the communication between the USB (...)
The MFR GUI supports the same devices as Fusion Digital Power Designer software. This tool is typically used in manufacturing (...)
| Package | Pins | Download |
|---|---|---|
| VQFN (RGC) | 64 | View options |
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