UCD9090

ACTIVE

10-Channel Sequencer and System Health Monitor

Product details

Supply voltage (min) (V) 3 Number of supplies monitored 11 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 10 Rating Catalog Operating temperature range (°C) -40 to 125
Supply voltage (min) (V) 3 Number of supplies monitored 11 Supply voltage (max) (V) 3.6 Iq (typ) (mA) 50 Number of sequenced outputs 10 Rating Catalog Operating temperature range (°C) -40 to 125
VQFN (RGZ) 48 49 mm² 7 x 7
  • Monitor and sequence 10 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 30 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
  • Cascading multiple devices
  • Multi-phase 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
  • Monitor and sequence 10 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 30 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
  • Cascading multiple devices
  • Multi-phase 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

The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply voltage inputs. Twenty-three GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading, or other system functions. Ten of these pins offer PWM functionality. Using these pins, the UCD9090 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 provides device configuration. This PC-based user interface (UI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.

The UCD9090 is a 10-rail PMBus/I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply voltage inputs. Twenty-three GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading, or other system functions. Ten of these pins offer PWM functionality. Using these pins, the UCD9090 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 provides device configuration. This PC-based user interface (UI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.

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Technical documentation

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Type Title Date
* Data sheet UCD9090 10-rail power supply sequencer and monitor with ACPI support datasheet (Rev. D) PDF | HTML 07 Mar 2019
Application note How to Access UCD90XXX Sequencers GPIO PDF | HTML 16 Jun 2022
Application note How to Decode UCD90xxx Fault Log With PMBus (Rev. A) 07 Nov 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 UCD90160/UCD9090A PMBus Command Migrating Guide 01 Mar 2019
User guide UCD90SEQ48EVM-560: 48-Pin Sequencer Development Board (Rev. A) 15 Oct 2018
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note How to Cascade Multiple UCD90xxx Sequencers 10 Aug 2017
Technical article A smart solution to sequence and monitor multiple power rails in a system PDF | HTML 27 Jul 2017
Application note Improvements to UCD9090A and UCD90160A Devices 26 Jun 2017
User guide Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer 31 May 2017
Analog Design Journal System telemetry: What, why and how? 11 Apr 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.

Evaluation board

UCD90SEQ48EVM-560 — Evaluation Module for UCD9090 10-Channel Sequencer and System Health Monitor

The UCD90SEQ48EVM-560 (EVM) is a fully assembled and tested circuit with a 48-pin socket and interface circuitry. The EVM allows system level development using the UCD9090RGZ 10-Channel Sequencer and System Health Monitor. A USB cable is included to connect the EVM to the PC operating the EVM GUI.

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

UCD9090 BSDL

SLVC498.ZIP (2 KB) - BSDL Model
Simulation model

UCD9090 IBIS Model

SLVMBT8.ZIP (16 KB) - IBIS 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

TIDEP0031 — Power Sequencing for K2E Using UCD9090 with PMBus

The K2E devices require power supplies to be sequenced in a proper order. This design demonstrates power sequencing for the 66AK2Ex and AM5K2Ex families of KeyStone II ARM+DSP and ARM-only multicore processors by use of the UCD9090. The UCD9090 is a 10-rail PMBus/I2C addressable power-supply (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
VQFN (RGZ) 48 View options

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