UCD90240

OBSOLETE

24-Rail PMBus Power Sequencer and Power Manager

Product details

Supply voltage (min) (V) 3.15 Number of supplies monitored 24 Supply voltage (max) (V) 3.63 Iq (typ) (mA) 31.4 Number of sequenced outputs 24 Rating Catalog Operating temperature range (°C) to
Supply voltage (min) (V) 3.15 Number of supplies monitored 24 Supply voltage (max) (V) 3.63 Iq (typ) (mA) 31.4 Number of sequenced outputs 24 Rating Catalog Operating temperature range (°C) to
JRBGA (ZRB) 157 81 mm² 9 x 9
  • Sequence, Monitor and Margin 24 Voltage Rails
    with a 9-mm × 9-mm Small Footprint
  • Monitor and Respond to User-Defined Faults
    Including OV, UV, OC, UC, Temperature, Time-
    out, and GPI-Triggered Faults
  • Flexible Sequence-on/off Dependencies, Delay
    Time, Boolean Logic, and GPIO Configuration to
    SupportComplex Sequencing Applications
  • High-accuracy Closed-loop Margining
  • Active Trim Function Improves Rail Output
    Voltage Accuracy
  • Advanced Nonvolatile Event Logging to Assist
    System Debugging
    • Single-Event Fault Log (100 Entries)
    • Peak Value Log
    • Black Box Fault Log to Save Status of all
      Rails and I/O Pins at the First Fault
  • Easily Cascade Up to 4 Power Sequencers and
    Take Coordinated Fault Responses
  • Easy-to-Use Fusion GUIs Eliminate Coding Efforts
    • Online and Offline System Level Design
    • Online Monitoring and Debugging
    • Manufacturing GUI Optimized for
      Manufacturers
  • Programmable Watchdog Timer and System
    Reset
  • Pin-Selected Rail State
  • PMBus 1.2 Compliant
  • Sequence, Monitor and Margin 24 Voltage Rails
    with a 9-mm × 9-mm Small Footprint
  • Monitor and Respond to User-Defined Faults
    Including OV, UV, OC, UC, Temperature, Time-
    out, and GPI-Triggered Faults
  • Flexible Sequence-on/off Dependencies, Delay
    Time, Boolean Logic, and GPIO Configuration to
    SupportComplex Sequencing Applications
  • High-accuracy Closed-loop Margining
  • Active Trim Function Improves Rail Output
    Voltage Accuracy
  • Advanced Nonvolatile Event Logging to Assist
    System Debugging
    • Single-Event Fault Log (100 Entries)
    • Peak Value Log
    • Black Box Fault Log to Save Status of all
      Rails and I/O Pins at the First Fault
  • Easily Cascade Up to 4 Power Sequencers and
    Take Coordinated Fault Responses
  • Easy-to-Use Fusion GUIs Eliminate Coding Efforts
    • Online and Offline System Level Design
    • Online Monitoring and Debugging
    • Manufacturing GUI Optimized for
      Manufacturers
  • Programmable Watchdog Timer and System
    Reset
  • Pin-Selected Rail State
  • PMBus 1.2 Compliant

The UCD90240 is a 24-rail PMBus addressable power sequencer and system manager in a compact 9-mm × 9-mm BGA package.

The device provides 24 analog monitor (MON) pins to monitor power-supply voltage, current, or temperature with two 12-bit ADC engines, 24 dedicated enable (EN) pins to control power rail on/off, 24 dedicated margin pins for closed-loop margining, 12 Logic GPO (LGPO) pins to support flexible Boolean logic and state machine functions, and 24 GPIO pins which can be configured as GPI, GPO, System Reset, cascading fault pins, and Watchdog I/O, and so forth.

The 24 EN pins and the 12 LGPO pins can be configured to be active driven or open-drain outputs.

Nonvolatile Event Logging preserves fault events after power dropout. Black Box Fault Log feature and preserves the status of all rails and I/O pins when the first fault occurs.

The cascading feature offers convenient ways to manage up to 96 voltage rails through one SYNC_CLK pin connection. The Fault Pin feature coordinates among cascaded devices to take synchronized fault responses.

The Pin-Selected Rail States feature uses up to three GPIs to control up to eight user-defined power states. These states can implement system low-power modes as outlined in the Advanced Configuration and Power Interface (ACPI) specification.

The TI Fusion Digital Power™ designer software is an intuitive PC-based graphical user interface (GUI) that can configure, store, and monitor all system operating parameters.

The UCD90240 is a 24-rail PMBus addressable power sequencer and system manager in a compact 9-mm × 9-mm BGA package.

The device provides 24 analog monitor (MON) pins to monitor power-supply voltage, current, or temperature with two 12-bit ADC engines, 24 dedicated enable (EN) pins to control power rail on/off, 24 dedicated margin pins for closed-loop margining, 12 Logic GPO (LGPO) pins to support flexible Boolean logic and state machine functions, and 24 GPIO pins which can be configured as GPI, GPO, System Reset, cascading fault pins, and Watchdog I/O, and so forth.

The 24 EN pins and the 12 LGPO pins can be configured to be active driven or open-drain outputs.

Nonvolatile Event Logging preserves fault events after power dropout. Black Box Fault Log feature and preserves the status of all rails and I/O pins when the first fault occurs.

The cascading feature offers convenient ways to manage up to 96 voltage rails through one SYNC_CLK pin connection. The Fault Pin feature coordinates among cascaded devices to take synchronized fault responses.

The Pin-Selected Rail States feature uses up to three GPIs to control up to eight user-defined power states. These states can implement system low-power modes as outlined in the Advanced Configuration and Power Interface (ACPI) specification.

The TI Fusion Digital Power™ designer software is an intuitive PC-based graphical user interface (GUI) that can configure, store, and monitor all system operating parameters.

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Technical documentation

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Type Title Date
* Data sheet UCD90240 24-Rail PMBus Power Sequencer and System Manager datasheet PDF | HTML 08 Jan 2015
Application note How to Decode UCD90xxx Fault Log With PMBus (Rev. A) 07 Nov 2019
Application note Improvements to the UCD90320 Device 01 Jul 2019
Application note Design Voltage Margining Circuit for UCD90xxx Power Sequencer and System Manager (Rev. A) 21 May 2019
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
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 answere PDF | HTML 01 Feb 2017
Technical article Reducing solution size with PMBus in multi-rail systems PDF | HTML 04 Nov 2016
Technical article Building blocks of power PDF | HTML 23 Mar 2016
Technical article Simplifying loop compensation and poles and zeros calculations PDF | HTML 18 Mar 2016
Technical article Don’t say goodbye to your power supply PDF | HTML 07 Mar 2016
Technical article A PMBus™ primer: common PMBus questions answered PDF | HTML 26 Sep 2015
EVM User's guide UCD90240EVM-704 24-Rail Sequencer Development Board (Rev. A) 05 Mar 2015
Analog Design Journal Power-supply sequencing for FPGAs 24 Oct 2014
Application note Monitoring Voltage, Current and Temperature Using the UCD9012x 23 Mar 2012

Design & development

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

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.
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 (...)

IDE, configuration, compiler or debugger

SLVC613 UCD90240EVM-704 Default Configuration files

Supported products & hardware

Supported products & hardware

Products
Sequencers
UCD90240 24-Rail PMBus Power Sequencer and Power Manager
Simulation model

UCD90240 BSDL Model

SLVMCF2.ZIP (5 KB) - BSDL Model
Calculation tool

SLVC676 UCD90xxx Voltage Margining Circuit Design Tool

Supported products & hardware

Supported products & hardware

Products
Sequencers
UCD90120 12-Channel Sequencer and System Health Monitor UCD90120A 12-Rail Power Supply Sequencer and Monitor with ACPI Support UCD90124 12-Rail Sequencer and System Health Controller with Fan Control UCD90124A 12-Rail Sequencer and System Health Monitor with Fan Control and ACPI Support UCD90160 16-Rail Power Supply Sequencer with ACPI Support UCD90160A 16-Rail PMBus Power Supply Sequencer and System Manager with ACPI Support UCD90240 24-Rail PMBus Power Sequencer and Power Manager UCD90320 32-Rail PMBus Power Sequencer and System Manager UCD9090 10-Channel Sequencer and System Health Monitor UCD9090A 10-Rail Power Supply Sequencer and Monitor With ACPI Support
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 (...)
Reference designs

PMP11399 — PMBus Power System for Enterprise Ethernet Switches Reference Design

PMP11399 is a complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, VTT termination, and auxiliary voltages commonly found on high-performance Ethernet Switches. The hardware is accompanied by a GUI that allows the user to perform real-time configuration and monitoring of the power (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP10896 — Complete PMBus Power System for Enterprise Ethernet Switches Reference Design

Complete PMBus power system for 3 ASIC/FPGA cores, DDR3 core memory, and auxiliary voltages found on high-performance Ethernet Switches.
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
JRBGA (ZRB) 157 Ultra Librarian

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

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