10-Rail Sequencer and System Health Monitor with Integrated 10-Channel Fan Controller
Product details
Parameters
Package | Pins | Size
Features
- Monitor and Sequence Ten 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 Ten Fans With Five User-Defined Speed-vs-Temperature Setpoints
- Supports Two-, Three-, and Four-Wire Fans
- Nonvolatile Error and Peak-Value Logging per Monitor (up to 12 Faults)
- Closed-Loop Margining for Ten Rails
- Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
- 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
- Full Configuration Update while in Normal Mode Capability
- APPLICATIONS
- Industrial / ATE
- Telecommunications and Networking Equipment
- Servers and Storage Systems
- Any System Requiring Sequencing and Monitoring of Multiple Power Rails
Description
The UCD90910 is a ten-rail I2C / PMBus 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 UCD90910 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 ten 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
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | 10-Rail Sequencer and System Health Monitor with 10-Fan Control datasheet | Jul. 22, 2010 |
| Application note | UCD90xxx Family Frequently Asked Questions and Answers (Rev. B) | Apr. 12, 2019 | |
| User guide | UCD90xxx Sequencer and System Health Controller PMBus™ Command Reference (Rev. G) | Apr. 03, 2019 | |
| User guide | UCD90xxx Sequencer Schematics Guidelines (Rev. C) | Mar. 24, 2019 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| Application note | How to Cascade Multiple UCD90xxx Sequencers | Aug. 10, 2017 | |
| User guide | Fusion Digital Power Designer GUI 7.0 for the UCD90xxx Sequencer | May 31, 2017 | |
| Technical article | Sequencing and managing multiple power rails in a system: common questions answered | Feb. 01, 2017 | |
| Application note | Monitoring Voltage, Current and Temperature Using the UCD9012x | Mar. 23, 2012 | |
| User guide | UCD90SEQ64EVM-650: 64-Pin Sequencer Development Board | Dec. 27, 2010 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
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.
Features
- Monitor and Sequence 12 Voltage Rails
- Non-Volatile Error Logging
- Closed Loop Margining for 10 Rails
- Watchdog Timer and System Reset
- Flexible Digital I/O Configuration
- Wide Range Single Supply (3.3V to 12V)
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
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 (...)
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
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VQFN (RGC) | 64 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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