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12-Rail Sequencer and System Health Monitor with Fan Control and ACPI Support

Inventory: 16,712

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-3-260C-168 HR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View

Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
VQFN (RGC) | 64 250 | SMALL T&R
-40 to 125
Package | Pins VQFN (RGC) | 64
Package qty | Carrier 250 | SMALL T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the UCD90124A

  • Monitor and sequence 12 voltage rails
    • All railssampled every 400 µs
    • 12-bit ADC with 2.5-V, 0.5% internalVREF
    • Sequence based on time, rail and pindependencies
    • Four programmable undervoltage and overvoltage thresholds permonitor
  • Nonvolatile error and peak-value logging per monitor (up to 12 fault detail entries)
  • Closed-loop margining for 10 Rails
    • Margin output adjusts rail voltage to match user-defined marginthresholds
  • Programmable watchdog timer and system reset
  • Flexible digital I/O configuration
  • Pin-selected rail states
  • Multiphase PWM clock generator
    • Clock frequenciesfrom 15.259 kHz to
      125 MHz
    • Capability to configure independent clock outputs forsynchronizing switch-mode power supplies
  • JTAG and I2C/SMBus/PMBus™ interfaces
  • Fan control and monitoring system functions.
    • Supports four fans with five user-defined speed-vs-temperaturesetpoints
    • Supports two-, three-, and four-wirefans

All trademarks are the property of their respective owners.

Description for the UCD90124A

The UCD90124A is a 12-rail PMBus/I2C addressable power-supplysequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 12 power-supplyvoltage 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 PWMfunctionality. Using these pins, the UCD90124A offers support for fan control, margining, andgeneral-purpose PWM functions.

Specific power states can be achieved using the Pin-Selected Rail States feature. Thisfeature allows with the use of up to 3 GPIs to enable and disable any rail. This is useful forimplementing 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 isprovided for device configuration. This PC-based graphical user interface (GUI) offers an intuitiveinterface for configuring, storing, and monitoring all system operating parameters.


Qty Price (USD)
1-99 10.836
100-249 9.466
250-999 7.298
1,000+ 6.528

Additional package qty | carrier options

Package qty | Carrier 2,000 | LARGE T&R
Inventory 28,000
Qty | Price (USD) 1ku | 5.676 1-99 9.422 100-249 8.23 250-999 6.346 1,000+ 5.676
Custom reel may be available