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UCD9090

ACTIVE

10-Channel Sequencer and System Health Monitor

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Data sheet

UCD9090

ACTIVE
Data sheet Order now

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 Interpret UCD90XXX CSV File PDF | HTML 29 May 2024
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

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