IDE, configuration, compiler or debugger
Data sheet
UCD90120
- Monitor and Sequence 12 Voltage Rails
- All Rails Sampled Every 200µs
- 12-bit ADC With 2.5V, 0.5% Internal VREF
- Sequence Based on Time, Rail and Pin Dependencies
- Six Hardware Comparators for Power Supply Fault Response in < 80µs
- Four Programmable Under-Voltage and Over-Voltage Thresholds per Monitor
- Programmable Fault Response Including Retries, Shutdown Slaves and Resequence
- Non-Volatile Error Logging
- Stores Up To 18 Faults
- Log Peak Values For All Monitor Inputs
- Closed Loop Margining for 10 Rails
- Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
- Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
- Watchdog Timer and System Reset
- Programmable WDT Reset and Start Times
- Configurable System Reset Pulse Widths
- Flexible Digital I/O Configuration
- Boolean Logic Builder for GPO Config
- GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
- Wide Range Single Supply (3.3V to 12V)
- Internal Temperature Sensor
- 64-Pin QFN Package
- JTAG and I2C/SMBus/PMBus Interfaces
- Fusion Digital Power GUI for Configuring and Monitoring Device Operation
- APPLICATIONS
- Industrial / ATE
- Telecommunications and Networking Equipment
- Servers and Storage Systems
- Any System Requiring Sequencing and Monitoring of Multiple Power Rails
The UCD90120 Power Supply Sequencer and System Health Monitor monitors and sequences up to 12 independent voltage rails. The device integrates a 12-bit ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs.
26 GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading multiple UCD90120 devices, or other system functions. 12 of these pins can be used as PWM outputs for power supply margining or general-purpose PWM functions including clock generation for switch-mode power supplies.
The TI Fusion Digital Power Designer 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 UCD90120 has an I2C/PMBus/SMBus communication interface for pre-production and in-system configuring and monitoring and a JTAG Port for production programming.
The most current UCD90xxx PMBus™ Command Reference is available at https://www.ti.com/fusiondocs
Technical documentation
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View all 10 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | UCD90120 12-Channel Sequencer and System Health Controller datasheet | 08 Sep 2009 | |
| * | Errata | Errata Report for the UCD90120 and UCD90124 Devices | 26 Apr 2010 | |
| Selection guide | Voltage Supervisors (Reset ICs) Quick Reference Guide (Rev. H) | 28 Feb 2020 | ||
| 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 | ||
| 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
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