Product details

Supply voltage (Min) (V) 3.15 Number of supplies monitored 32 Supply voltage (Max) (V) 3.63 Iq (Typ) (uA) 31400 Time delay (ms) Programmable Number of sequenced outputs 32 Rating Catalog
Supply voltage (Min) (V) 3.15 Number of supplies monitored 32 Supply voltage (Max) (V) 3.63 Iq (Typ) (uA) 31400 Time delay (ms) Programmable Number of sequenced outputs 32 Rating Catalog
NFBGA (ZWS) 169 144 mm² 12 x 12
  • Sequence, monitor, and margin 24 voltage rails plus 8 digital rails
  • Monitor and respond to OV, UV, OC, UC, temperature, time-out, and GPI-triggered faults
  • Flexible sequence-on and off dependencies, delay time, Boolean logic, and GPIO configuration to support complex sequencing aplications
  • Four rail profiles for adaptive voltage identification (AVID) voltage regulator
  • High-accuracy closed-loop margining
  • Active trim function improves rail output voltage accuracy
  • Advanced nonvolatile event logging to assist system debugging
    • Single-event fault log (100 entries)
    • Peak value log
    • Black box fault log to save status of all rails and I/O pins at the first fault
  • Easily cascade up to 4 power sequencers and take coordinated fault responses
  • Programmable watchdog timer and system reset
  • Pin-selected rail state
  • PMBus™ 1.2 compliant
  • Dual-bank configurations to provide a fail-safe state when programming
  • Sequence, monitor, and margin 24 voltage rails plus 8 digital rails
  • Monitor and respond to OV, UV, OC, UC, temperature, time-out, and GPI-triggered faults
  • Flexible sequence-on and off dependencies, delay time, Boolean logic, and GPIO configuration to support complex sequencing aplications
  • Four rail profiles for adaptive voltage identification (AVID) voltage regulator
  • High-accuracy closed-loop margining
  • Active trim function improves rail output voltage accuracy
  • Advanced nonvolatile event logging to assist system debugging
    • Single-event fault log (100 entries)
    • Peak value log
    • Black box fault log to save status of all rails and I/O pins at the first fault
  • Easily cascade up to 4 power sequencers and take coordinated fault responses
  • Programmable watchdog timer and system reset
  • Pin-selected rail state
  • PMBus™ 1.2 compliant
  • Dual-bank configurations to provide a fail-safe state when programming

The UCD90320 device is a 32-rail PMBus™ addressable power sequencer and system manager in a compact 0.8-mm pitch BGA package.

The 24 integrated ADC channels (AMONx) monitor the power supply voltage, current, and temperature. Of the 84 GPIO pins, 8 can be used as digital monitors (DMONx), 32 to enable the power supply (ENx), 24 for margining (MARx), 16 for logical GPO, and 32 GPIs for cascading, and system function.

The 32 ENx pins and the 16 LGPOx pins can be configured to be active driven or open drain outputs.

Nonvolatile event logging preserves fault events after power dropout. Black box fault log feature preserves the status for all rails and I/O pins when the first fault occurs. The cascading feature offers convenient ways to manage up to 128 voltage rails through one SYNC_CLK pin connection.

The FAULT pin coordinates the cascaded devices to take synchronized fault responses. The pin-selected rail states feature uses up to 3 GPIs to control up to eight user-defined power states. These states can implement system low-power modes as outlined in the Advanced Configuration and Power Interface (ACPI) specification.

The TI Fusion Digital Power™ designer software is an intuitive PC-based graphic user interface (GUI) that can configure, store, and monitor all system operating parameters.

The UCD90320 device is a 32-rail PMBus™ addressable power sequencer and system manager in a compact 0.8-mm pitch BGA package.

The 24 integrated ADC channels (AMONx) monitor the power supply voltage, current, and temperature. Of the 84 GPIO pins, 8 can be used as digital monitors (DMONx), 32 to enable the power supply (ENx), 24 for margining (MARx), 16 for logical GPO, and 32 GPIs for cascading, and system function.

The 32 ENx pins and the 16 LGPOx pins can be configured to be active driven or open drain outputs.

Nonvolatile event logging preserves fault events after power dropout. Black box fault log feature preserves the status for all rails and I/O pins when the first fault occurs. The cascading feature offers convenient ways to manage up to 128 voltage rails through one SYNC_CLK pin connection.

The FAULT pin coordinates the cascaded devices to take synchronized fault responses. The pin-selected rail states feature uses up to 3 GPIs to control up to eight user-defined power states. These states can implement system low-power modes as outlined in the Advanced Configuration and Power Interface (ACPI) specification.

The TI Fusion Digital Power™ designer software is an intuitive PC-based graphic user interface (GUI) that can configure, store, and monitor all system operating parameters.

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

UCD90320EVM-783 — UCD90320 Power Sequencer and System Manager Evaluation Module with Margining

The UCD90320EVM-783 is designed for the evaluation of the UCD90320, a 32-rail PMBus power sequencer and system manager. Access to all of the I/O pins is provided via strip connectors for integration into complex systems using jumper wires. The UCD90320EVM provides a PMBus (power management bus (...)

In stock
Limit: 3
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 interface (...)

In stock
Limit: 3
Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™  is the Graphical User Interface (GUI) 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.
Simulation model

UCD90320 BSDL Model

SLUM618.ZIP (5 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
NFBGA (ZWS) 169 View options

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