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UCD91320

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32 rail PMBus power sequencer and system manager

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UCD91320

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Detalles del producto

Number of supplies monitored 32 Number of sequenced outputs 32 Rating Catalog Supply voltage (max) (V) 3.6 Supply voltage (min) (V) 2.85 Iq (typ) (mA) 10 Operating temperature range (°C) -40 to 125
Number of supplies monitored 32 Number of sequenced outputs 32 Rating Catalog Supply voltage (max) (V) 3.6 Supply voltage (min) (V) 2.85 Iq (typ) (mA) 10 Operating temperature range (°C) -40 to 125
LQFP (PZ) 100 256 mm² 16 x 16
  • Sequence and monitor up to 24 analog or digital (power good) rails + 8 digital only rails
  • PWM margining on up to 16 rails
  • Cascade up to 4 devices to sequence up to 128 rails
  • Active trim function allows user to trim output voltage
  • Monitor and respond to OV, UV, time-out, and GPI-triggered faults
  • Flexible sequencing dependencies, delay times, Boolean logic, and GPIO configurations
  • Rail status dependent sequencing, delay times, and LGPO pins for complex sequencing applications
  • Four rail profiles for adaptive voltage identification (AVID) voltage regulator
  • Nonvolatile fault event logging with RTC and timestamping
    • Single-event fault log (100 entries)

    • Black box fault log saves fault information and status of all rails - for the first fault and the last fault before a power down event

  • Continue monitoring rails during configuration activities to maximize up-time
  • Programmable watchdog timer and system reset
  • GPI Controlled Rail Groups
  • SEU mitigation & ECC (single-error correct + double-error detect)
  • PMBus™ 1.2 compliant

  • PMBus security profile Level 0 with custom commands to enable features in security profile Level 2
  • Sequence and monitor up to 24 analog or digital (power good) rails + 8 digital only rails
  • PWM margining on up to 16 rails
  • Cascade up to 4 devices to sequence up to 128 rails
  • Active trim function allows user to trim output voltage
  • Monitor and respond to OV, UV, time-out, and GPI-triggered faults
  • Flexible sequencing dependencies, delay times, Boolean logic, and GPIO configurations
  • Rail status dependent sequencing, delay times, and LGPO pins for complex sequencing applications
  • Four rail profiles for adaptive voltage identification (AVID) voltage regulator
  • Nonvolatile fault event logging with RTC and timestamping
    • Single-event fault log (100 entries)

    • Black box fault log saves fault information and status of all rails - for the first fault and the last fault before a power down event

  • Continue monitoring rails during configuration activities to maximize up-time
  • Programmable watchdog timer and system reset
  • GPI Controlled Rail Groups
  • SEU mitigation & ECC (single-error correct + double-error detect)
  • PMBus™ 1.2 compliant

  • PMBus security profile Level 0 with custom commands to enable features in security profile Level 2

The UCD91320 device is a 32-rail PMBus controlled power sequencer.

Dedicated pins (MONx) monitor up to 32 voltage rails in either analog or digital modes. 32 rail enable (ENx) pins allow regulators to be sequenced. 16 margining (MARx) pins can be used to push regulators to high or low limits (margins) for testing, or actively trim outputs for enhanced accuracy. The output state of 16 logical GPO (LGPOx) pins can be controlled by the state of GPIs, rail status, and other LGPOs.

Nonvolatile event logging preserves fault events after power dropout. The Black Box Fault Log preserves the fault information and the status of all rails. This occurs for the first fault as well as the last fault before a power down event. The cascading feature offers convenient ways to manage up to 128 voltage rails.

The Sequencer Studio™ software is an intuitive PC-based graphic user interface (GUI) that can configure, store, and monitor all system operating parameters.

The UCD91xxx devices utilize multiple security safeguards to maintain integrity of the device firmware and configuration. Because of this, TI may not be able to read out the device configuration and firmware during failure analysis or in the case of a return. Please keep record of the firmware version running on your device, as well as the configuration parameters in the device. This ensures that the TI team is able to replicate any conditions for a return.

The UCD91320 device is a 32-rail PMBus controlled power sequencer.

Dedicated pins (MONx) monitor up to 32 voltage rails in either analog or digital modes. 32 rail enable (ENx) pins allow regulators to be sequenced. 16 margining (MARx) pins can be used to push regulators to high or low limits (margins) for testing, or actively trim outputs for enhanced accuracy. The output state of 16 logical GPO (LGPOx) pins can be controlled by the state of GPIs, rail status, and other LGPOs.

Nonvolatile event logging preserves fault events after power dropout. The Black Box Fault Log preserves the fault information and the status of all rails. This occurs for the first fault as well as the last fault before a power down event. The cascading feature offers convenient ways to manage up to 128 voltage rails.

The Sequencer Studio™ software is an intuitive PC-based graphic user interface (GUI) that can configure, store, and monitor all system operating parameters.

The UCD91xxx devices utilize multiple security safeguards to maintain integrity of the device firmware and configuration. Because of this, TI may not be able to read out the device configuration and firmware during failure analysis or in the case of a return. Please keep record of the firmware version running on your device, as well as the configuration parameters in the device. This ensures that the TI team is able to replicate any conditions for a return.
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Documentación técnica

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* Data sheet UCD91320 32-Rail PMBus™ Power Sequencer and System Manager datasheet PDF | HTML 18 dic 2025
User guide UCD91xxx Sequencer and System Health Controller PMBus™ Command Reference PDF | HTML 10 dic 2025
Application note Design Voltage Margining Circuit for UCD91xxx Power Sequencer and System Manager PDF | HTML 16 sep 2025

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

GUI para el módulo de evaluación (EVM)

UCD-POWER-SEQUENCER-STUDIO — Configure the UCD91XXX device family using the UCD Power Sequencer Studio

Graphical environment for configuring, storing, and monitoring parameters for the UCD91xxx sequencer family
Productos y hardware compatibles

Productos y hardware compatibles

Productos
Secuenciadores
UCD91160 — Secuenciador de alimentación PMBus de 16 carriles y administrador de sistemas UCD91320 — 32 rail PMBus power sequencer and system manager
Opciones de descarga
Herramienta de simulación

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PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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LQFP (PZ) 100 Ultra Librarian
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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