The UCD90120 Power Supply Sequencer and System Health Monitor monitors and sequences up to 12 independent voltage rails. The device integrates a 12-bit ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs.
26 GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading multiple UCD90120 devices, or other system functions. 12 of these pins can be used as PWM outputs for power supply margining or general-purpose PWM functions including clock generation for switch-mode power supplies.
The TI Fusion Digital Power Designer 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 UCD90120 has an I2C/PMBus/SMBus communication interface for pre-production and in-system configuring and monitoring and a JTAG Port for production programming.
The most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | UCD90120 12-Channel Sequencer and System Health Controller datasheet | Sep 8, 2009 | |
| * | Errata | Errata Report for the UCD90120 and UCD90124 Devices | Apr 26, 2010 | |
| Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | Feb 28, 2020 | ||
| Application note | How to Decode UCD90xxx Fault Log With PMBus (Rev. A) | Nov 7, 2019 | ||
| Application note | Design Voltage Margining Circuit for UCD90xxx Power Sequencer and System Manager (Rev. A) | May 21, 2019 | ||
| Application note | UCD90xxx Family Frequently Asked Questions and Answers (Rev. B) | Apr 12, 2019 | ||
| User guide | UCD90xxx Sequencer and System Health Controller PMBus™ Command Reference (Rev. G) | Apr 3, 2019 | ||
| Application note | Monitoring Voltage, Current and Temperature Using the UCD9012x | Mar 23, 2012 | ||
| User guide | UCD90SEQ64EVM-650: 64-Pin Sequencer Development Board | Dec 27, 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.
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.
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |
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