UCD90124A

ACTIVE

12-Rail Sequencer and System Health Monitor with Fan Control and ACPI Support

Product details

Supply voltage (min) (V) 3 Number of supplies monitored 12 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 12 Rating Catalog Operating temperature range (°C) -40 to 125
Supply voltage (min) (V) 3 Number of supplies monitored 12 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 12 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGC) 64 81 mm² 9 x 9
  • 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
  • Fan control and monitoring system functions.
    • Supports four fans with five user-defined speed-vs-temperature setpoints
    • Supports two-, three-, and four-wire fans
  • 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
  • Fan control and monitoring system functions.
    • Supports four fans with five user-defined speed-vs-temperature setpoints
    • Supports two-, three-, and four-wire fans

The UCD90124A 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 UCD90124A offers support for fan control, 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.

The UCD90124A 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 UCD90124A offers support for fan control, 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.

Download View video with transcript Video

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

Technical documentation

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.
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 (...)

Simulation model

UCD90124A BSDL

SLVC156.ZIP (2 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 (...)
Package Pins CAD symbols, footprints & 3D models
VQFN (RGC) 64 Ultra Librarian

Ordering & quality

Information included:
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  • Device marking
  • 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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