Top

Product details

Parameters

Number of supplies monitored 11 VCC (Min) (V) 3 VCC (Max) (V) 3.6 Iq (Typ) (uA) 50000 Time delay (ms) Programmable Number of sequenced outputs 10 Rating Catalog open-in-new Find other Sequencers

Package | Pins | Size

VQFN (RGZ) 48 49 mm² 7 x 7 open-in-new Find other Sequencers

Features

  • 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

All trademarks are the property of their respective owners.

open-in-new Find other Sequencers

Description

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.

open-in-new Find other Sequencers
Download

Recommended alternative:

The most current UCD90xxx PMBus™ Command Reference is available at http://www.ti.com/fusiondocs

Similar products you might be interested in
open-in-new Compare products
Exact equivalent in functionality and parametrics to the compared device:
UCD9090A ACTIVE 10-Rail Power Supply Sequencer and Monitor With ACPI Support A PTP upgrade with enhanced functionality and is preferred for new designs.

Technical documentation

= Featured
No results found. Please clear your search and try again. View all 18
Type Title Date
* Datasheet UCD9090 10-rail power supply sequencer and monitor with ACPI support datasheet (Rev. D) Mar. 07, 2019
Application notes How to Decode UCD90xxx Fault Log With PMBus (Rev. A) Nov. 07, 2019
Application notes Design Voltage Margining Circuit for UCD90xxx Power Sequencer and System Manager (Rev. A) May 21, 2019
Application notes UCD90xxx Family Frequently Asked Questions and Answers (Rev. B) Apr. 12, 2019
User guides UCD90xxx Sequencer and System Health Controller PMBus™ Command Reference (Rev. G) Apr. 03, 2019
User guides UCD90xxx Sequencer Schematics Guidelines (Rev. C) Mar. 24, 2019
User guides UCD90SEQ48EVM-560: 48-Pin Sequencer Development Board (Rev. A) Oct. 15, 2018
Application notes How to Cascade Multiple UCD90xxx Sequencers Aug. 10, 2017
Technical articles A smart solution to sequence and monitor multiple power rails in a system Jul. 27, 2017
Application notes Improvements to UCD9090A and UCD90160A Devices Jun. 26, 2017
User guides Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer May 31, 2017
Technical articles Sequencing and managing multiple power rails in a system: common questions answered Feb. 01, 2017
Selection guides PMBus Power Solution Guide (Rev. C) Nov. 04, 2015
Technical articles A New Understanding: Blast Motion redefines movement, tracking and training for athletes. Aug. 06, 2014
Technical articles Improving Fly-Buck Regulation Using Opto (Part-1) Jul. 15, 2014
Application notes System telemetry: What, why and how? Apr. 11, 2014
Selection guides Power Management for Xilinx FPGAs Feb. 04, 2014
Application notes Monitoring Voltage, Current and Temperature Using the UCD9012x Mar. 23, 2012

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description
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.
Features
  • Monitor and Sequence 10 Voltage Rails
  • Non-Volatile Error and Peak-Value Logging per Monitor (up to 30 faults)
  • Closed Loop Margining for 10 Rails
  • Pin-Selected Rail States
  • Multiphase PWM Clock Generator
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Internal Temperature (...)
INTERFACE ADAPTERS Download
$99.00
Description

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 (...)

Features
  • Supports master mode I²C, SMBus or PMBus as well as GPIO.
  • Supports USB1.1 full speed at 12 Mbit/s. The USB interface adapter is recognized by the host as a generic human interface device (HID), so no proprietary USB or HID driver is needed. Therefore, the USB interface adapter can be treated as a (...)

Software development

APPLICATION SOFTWARE & FRAMEWORKS Download
Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER 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.
Features

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
APPLICATION SOFTWARE & FRAMEWORKS Download
Fusion Digital Power Manufacturing Tool
FUSION_MFR_GUI 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 (...)

Features

Some of the tasks the tool can perform include:

  • Download/Upgrade firmware
  • Program a device configuration
  • Calibrate a device (manually or instrumented via GPIB):
    • Input voltage (Vin)
    • Output voltage (Vout)
    • Output current (Iout)
    • Temperature
  • Test the device (validate power conversion falls within acceptable Vout (...)

Design tools & simulation

SIMULATION MODELS Download
SLVC498.ZIP (2 KB) - BSDL Model
SIMULATION MODELS Download
SLVMBT8.ZIP (16 KB) - IBIS Model
CALCULATION TOOLS Download
SLVC676.ZIP (88 KB)

Reference designs

REFERENCE DESIGNS Download
Power Sequencing for K2E Using UCD9090 with PMBus
TIDEP0031 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 (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Digitally controlled power multiplexing and monitoring system
PMP5927 — PMP5927 is an I2C controlled 1:7 Power Mux and Monitoring System for DC distribution systems from 9 to 80 V. It is well suited for distributing power to TMAs (Tower Mounted Antennas), LED Arrays, and other DC systems needing sequencing, circuit protection, and monitoring via an I2C interface. With (...)

CAD/CAE symbols

Package Pins Download
VQFN (RGZ) 48 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​