UCD90124A 12-Rail Sequencer and System Health Monitor with Fan Control and ACPI Support | TI.com

UCD90124A (ACTIVE)

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

12-Rail Sequencer and System Health Monitor with Fan Control and ACPI Support - UCD90124A
 

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

Description

The UCD90124A is a 12-rail PMBus/I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 12 power-supply voltage 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 UCD90124A offers support for fan control, 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 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.

Features

  • 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
  • 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 Margin Thresholds
  • Programmable Watchdog Timer and System Reset
  • Flexible Digital I/O Configuration
  • Pin-Selected Rail States
  • 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
  • JTAG and I2C/SMBus/PMBus Interfaces
  • APPLICATIONS
    • Industrial / ATE
    • Telecommunications and Networking Equipment
    • Servers and Storage Systems
    • Any System Requiring Sequencing and Monitoring of Multiple Power Rails

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Parametrics Compare all products in Sequencer

 
# of Supplies Monitored
VCC (Min) (V)
VCC (Max) (V)
Iq (Typ) (uA)
Time Delay (ms)
Number of Sequenced Outputs
Rating
Pin/Package
UCD90124A UCD90120A UCD90160A UCD90240 UCD90320 UCD9090A
12     13     16     24     32     10    
3     3     3     3.15     3.15     3    
3.6     3.6     3.6     3.63     3.63     3.6    
50000     50000     50000     31400     31400     50000    
Programmable     Programmable     Programmable     Programmable     Programmable     Programmable    
12     12     16     24     32     10    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
64VQFN     64VQFN     64VQFN     157BGA MICROSTAR JUNIOR     169NFBGA     48VQFN    

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