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UCD90120A ACTIVE 12-Rail Power Supply Sequencer and Monitor with ACPI Support This product has an increased set of features.

Product details

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
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
VQFN (RGC) 64 81 mm² 9 x 9 VQFN (RGC) 64 81 mm² 9.0 x 9.0
  • Monitor and Sequence 12 Voltage Rails
    • All Rails Sampled Every 200µs
    • 12-bit ADC With 2.5V, 0.5% Internal VREF
    • Sequence Based on Time, Rail and Pin Dependencies
    • Six Hardware Comparators for Power Supply Fault Response in < 80µs
    • Four Programmable Under-Voltage and Over-Voltage Thresholds per Monitor
    • Programmable Fault Response Including Retries, Shutdown Slaves and Resequence
  • Non-Volatile Error Logging
    • Stores Up To 18 Faults
    • Log Peak Values For All Monitor Inputs
  • Closed Loop Margining for 10 Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
    • Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
  • Watchdog Timer and System Reset
    • Programmable WDT Reset and Start Times
    • Configurable System Reset Pulse Widths
  • Flexible Digital I/O Configuration
    • Boolean Logic Builder for GPO Config
    • GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
  • Wide Range Single Supply (3.3V to 12V)
    • Internal Temperature Sensor
    • 64-Pin QFN Package
  • JTAG and I2C/SMBus/PMBus Interfaces
  • Fusion Digital Power GUI for Configuring and Monitoring Device Operation
  • APPLICATIONS
    • Industrial / ATE
    • Telecommunications and Networking Equipment
    • Servers and Storage Systems
    • Any System Requiring Sequencing and Monitoring of Multiple Power Rails

  • Monitor and Sequence 12 Voltage Rails
    • All Rails Sampled Every 200µs
    • 12-bit ADC With 2.5V, 0.5% Internal VREF
    • Sequence Based on Time, Rail and Pin Dependencies
    • Six Hardware Comparators for Power Supply Fault Response in < 80µs
    • Four Programmable Under-Voltage and Over-Voltage Thresholds per Monitor
    • Programmable Fault Response Including Retries, Shutdown Slaves and Resequence
  • Non-Volatile Error Logging
    • Stores Up To 18 Faults
    • Log Peak Values For All Monitor Inputs
  • Closed Loop Margining for 10 Rails
    • Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
    • Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
  • Watchdog Timer and System Reset
    • Programmable WDT Reset and Start Times
    • Configurable System Reset Pulse Widths
  • Flexible Digital I/O Configuration
    • Boolean Logic Builder for GPO Config
    • GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
  • Wide Range Single Supply (3.3V to 12V)
    • Internal Temperature Sensor
    • 64-Pin QFN Package
  • JTAG and I2C/SMBus/PMBus Interfaces
  • Fusion Digital Power GUI for Configuring and Monitoring Device Operation
  • APPLICATIONS
    • Industrial / ATE
    • Telecommunications and Networking Equipment
    • Servers and Storage Systems
    • Any System Requiring Sequencing and Monitoring of Multiple Power Rails

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 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.

Download

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
Interface adapter

USB-TO-GPIO — USB Interface Adapter EVM

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 (...)

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

UCD90120 BSDL

SLVC321.ZIP (2 KB) - BSDL Model
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 (...)
Calculation tool

UCD90xxx Voltage Margining Circuit Design Tool

SLVC676.ZIP (88 KB)
Package Pins Download
VQFN (RGC) 64 View options

Ordering & quality

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

Support & training

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