Home Power management Sequencers

UCD90120A

ACTIVE
Order now

12-Rail Power Supply Sequencer and Monitor with ACPI Support

Data sheet
Top
12-Rail Power Supply Sequencer and Monitor with ACPI Support

UCD90120A

ACTIVE
Data sheet Order now

Product details

Parameters

Supply voltage (Min) (V) 3 Number of supplies monitored 13 Supply voltage (Max) (V) 3.6 Iq (Typ) (uA) 50000 Time delay (ms) Programmable Number of sequenced outputs 12 Rating Catalog open-in-new Find other Sequencers

Package | Pins | Size

VQFN (RGC) 64 81 mm² 9 x 9 open-in-new Find other Sequencers

Features

  • Monitor and Sequence 12 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
  • Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Fault Detail Entries)
  • Closed-Loop Margining for 10 Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Pin-Selected Rail States
  • 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
  • JTAG and I2C/SMBus/PMBus™ Interfaces
 open-in-new Find other Sequencers

Description

The UCD90120A is a 12-rail PMBus/I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 12 power-supply voltage 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 UCD90120A offers support for margining, and general-purpose PWM functions.

Specific power states can be achieved using the Pin-Selected Rail States feature. This feature allows with the use of up to 3 GPIs to enable and disable any rail. This is useful for implementing system low-power modes and the Advanced Configuration and Power Interface (ACPI) specification that is used for hardware devices.

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.

 open-in-new Find other Sequencers
Download

The most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 18
Type Title Date
* Data sheet UCD90120A 12-Rail Power Supply Sequencer and Monitor With ACPI Support datasheet (Rev. C) Jun. 09, 2016
Application note How to Decode UCD90xxx Fault Log With PMBus (Rev. A) Nov. 07, 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. 03, 2019
User guide UCD90xxx Sequencer Schematics Guidelines (Rev. C) Mar. 24, 2019
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note How to Cascade Multiple UCD90xxx Sequencers Aug. 10, 2017
User guide Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer May 31, 2017
Technical article Sequencing and managing multiple power rails in a system: common questions answered Feb. 01, 2017
Technical article Just the FPGA I was looking for… but how do I power it? Nov. 09, 2015
Application note Analog Applications Journal 4Q 2014 Oct. 24, 2014
Application note Power-supply sequencing for FPGAs Oct. 24, 2014
Test report TI Power Reference Design for Xilinx® Artix®-7 (AC701) May 12, 2014
User guide PMP7977 User's Guide Sep. 11, 2013
User guide TSW2200 Multi-Output Power Supply Board (Rev. A) Dec. 13, 2012
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

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description

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.

Features
  • Monitor and Sequence 12 Voltage Rails
  • Non-Volatile Error Logging
  • Closed Loop Margining for 10 Rails
  • Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Wide Range Single Supply (3.3V to 12V)
View details
INTERFACE ADAPTER Download
99
Description

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 interface (...)

Features
  • Supports master mode I²C, SMBus or PMBus as well as GPIO.
  • Supports USB1.1 full speed at 12 Mbit/s. The USB interface adapter is recognized by the host as a generic human interface device (HID), so no proprietary USB or HID driver is needed. Therefore, the USB interface adapter can be treated as a (...)
View details

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER — Fusion Digital Power™  is the Graphical User Interface (GUI) 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.
Features

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
View details
APPLICATION SOFTWARE & FRAMEWORK Download
Fusion Digital Power Manufacturing Tool
FUSION_MFR_GUI — 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 (...)
Features

Some of the tasks the tool can perform include:

  • Download/Upgrade firmware
  • Program a device configuration
  • Calibrate a device (manually or instrumented via GPIB):
    • Input voltage (Vin)
    • Output voltage (Vout)
    • Output current (Iout)
    • Temperature
  • Test the device (validate power conversion falls within acceptable Vout (...)
View details

Design tools & simulation

SIMULATION MODEL Download
SLVC496.ZIP (2 KB) - BSDL Model
SIMULATION MODEL Download
SLVMCL8.ZIP (16 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
View details
CALCULATION TOOL Download
SLVC676.ZIP (88 KB)

Reference designs

REFERENCE DESIGNS Download
Altera Arria V FPGA Power Supply Reference Design
PMP9357 — The PMP9357 reference design is a complete power solution for Altera's Arria V series FPGAs.  This design uses several TPS54620 synchronous step down converters, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA.  To provide correct power (...)
document-generic Schematic
REFERENCE DESIGNS Download
Xilinx Virtex UltraScale FPGA Power Solution with PMBus Reference Design
PMP9475 — The PMP9475 12V-input reference design provides all the power supply rails necessary to power Xilinx's Virtex® UltraScale™ family of FPGAs in  a compact, highly efficient design.  This design uses several of TI's PMBus Point-Of-Load voltage regulators for ease of (...)
document-generic Schematic
REFERENCE DESIGNS Download
Xilinx Kintex UltraScale FPGA Power Solution Reference Design with PMBus
PMP9444 — The PMP9444 reference design provides all the power supply rails necessary to power Xilinx's Kintex UltraScale family of FPGAs.  It features two UCD90120A's for flexible power up and power down sequencing as well as voltage monitoring, current monitoring, and voltage margining through the (...)
document-generic Schematic
REFERENCE DESIGNS Download
Xilinx Artix 7 FPGA with PMBus Power Management Reference Design
PMP7977 — The Artix 7 power management reference design board uses power modules, linear regulators, and a PMBus compliant system controller to supply all required core and auxiliary voltages needed by the FPGA, including DDR memory termination. A Digital Power graphical user interface is used to monitor the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RGC) 64 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Training series

View all TI training and videos

Videos