IDE, configuration, compiler or debugger
Data sheet
UCD90124
- Monitor and Sequence 12 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
- Fan Control and Monitoring
- Supports Four Fans With Five User-Defined
Speed-vs-Temperature Setpoints - Supports Two-, Three-, and Four-Wire Fans
- Supports Four Fans With Five User-Defined
- Nonvolatile Error and Peak-Value Logging per Monitor
(up to 10 Fault Detail Entries) - Closed-Loop Margining for 10 Rails
- Margin Output Adjusts Rail Voltage to Match
User-Defined Margin Thresholds
- Margin Output Adjusts Rail Voltage to Match
- Programmable Watchdog Timer and System Reset
- Flexible Digital I/O Configuration
- Multiphase PWM Clock Generator
- Clock Frequencies From 15.259 kHz to 125 MHz
- Capability to Configure Independent Clock Outputs for
Synchronizing Switch-Mode Power Supplies
- Internal Temperature Sensor
- JTAG and I2C/SMBus/PMBus™ Interfaces
- APPLICATIONS
- Industrial / ATE
- Telecommunications and Networking Equipment
- Servers and Storage Systems
- Embedded Computing
- Any System Requiring Sequencing and Monitoring of
Multiple Power Rails
PMBus, Fusion Digital Power are trademarks of Texas Instruments.
The UCD90124 is a 12-rail PMBus/I2C addressable power-supply sequencer and system-health monitor. The device integrates a 12-bit ADC for monitoring up to 13 power-supply voltage, current, or temperature inputs. Twenty-six GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading, or other system functions. Twelve of these pins offer PWM functionality. Using these pins, the UCD90124 offers support for fan control, margining, and general-purpose PWM functions.
Fan-control signals can be sent using PMBus commands or generated from one of two built-in fan-control algorithms. PWM outputs combined with temperature and fan-speed measurements provide a complete fan-control solution for up to four independent fans.
The TI Fusion Digital Power designer software is provided for device configuration. This PC-based graphical user interface (GUI) offers an intuitive interface for configuring, storing, and monitoring all system operating parameters.
The most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs
Technical documentation
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View all 8 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | UCD90124 12-Rail Sequencer and System Health Monitor With Fan Control datasheet (Rev. B) | 03 Sep 2010 | |
| * | Errata | Errata Report for the UCD90120 and UCD90124 Devices | 26 Apr 2010 | |
| 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 | ||
| Application note | Monitoring Voltage, Current and Temperature Using the UCD9012x | 23 Mar 2012 | ||
| User guide | UCD90SEQ64EVM-650: 64-Pin Sequencer Development Board | 27 Dec 2010 | ||
| EVM User's guide | UCD90120/4 EVM User's Guide | 06 Oct 2009 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
UCD90SEQ64EVM-650 — Evaluation Module for UCD90xxx 64-pin Sequencer and System Health Monitor
The UCD90SEQ64EVM-650 is a fully assembled and tested circuit for evaluating the 64-pin Sequencer and System Health Controller, including the UCD90120, UCD90124, UCD90120A, UCD90124A, UCD90910 and UCD90160.
User guide: PDF
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 (...)
Calculation tool
SLVC676 — UCD90xxx Voltage Margining Circuit Design Tool
Supported products & hardware
Products
Sequencers
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 (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGC) | 64 | Ultra Librarian |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
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.
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