UCD90124A Series

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

Catalog

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

Part	Voltage - Threshold	Reset	Supplier Device Package	Package / Case	Reset Timeout	Mounting Type	Type	Number of Voltages Monitored	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments UCD90124ARGCR	Adjustable/Selectable	Active Low	64-VQFN (9x9)	64-VFQFN Exposed Pad	2 µs	Surface Mount	Sequencer	12	-40 °C	110 °C
Texas Instruments UCD90124RGCT	Adjustable/Selectable	Active Low	64-VQFN (9x9)	64-VFQFN Exposed Pad	2 µs	Surface Mount	Sequencer	12	-40 °C	110 °C
Texas Instruments UCD90124ARGCT	Adjustable/Selectable	Active Low	64-VQFN (9x9)	64-VFQFN Exposed Pad	2 µs	Surface Mount	Sequencer	12	-40 °C	110 °C

Catalog

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

Key Features

• Monitor and sequence 12 voltage railsAll rails sampled every 400 µs12-bit ADC with 2.5-V, 0.5% internal VREFSequence based on time, rail and pin dependenciesFour programmable undervoltage and overvoltage thresholds per monitorNonvolatile error and peak-value logging per monitor (up to 12 fault detail entries)Closed-loop margining for 10 RailsMargin output adjusts rail voltage to match user-defined margin thresholdsProgrammable watchdog timer and system resetFlexible digital I/O configurationPin-selected rail statesMultiphase PWM clock generatorClock frequencies from 15.259 kHz to125 MHzCapability to configure independent clock outputs for synchronizing switch-mode power suppliesJTAG and I2C/SMBus/PMBus™ interfacesFan control and monitoring system functions.Supports four fans with five user-defined speed-vs-temperature setpointsSupports two-, three-, and four-wire fansMonitor and sequence 12 voltage railsAll rails sampled every 400 µs12-bit ADC with 2.5-V, 0.5% internal VREFSequence based on time, rail and pin dependenciesFour programmable undervoltage and overvoltage thresholds per monitorNonvolatile error and peak-value logging per monitor (up to 12 fault detail entries)Closed-loop margining for 10 RailsMargin output adjusts rail voltage to match user-defined margin thresholdsProgrammable watchdog timer and system resetFlexible digital I/O configurationPin-selected rail statesMultiphase PWM clock generatorClock frequencies from 15.259 kHz to125 MHzCapability to configure independent clock outputs for synchronizing switch-mode power suppliesJTAG and I2C/SMBus/PMBus™ interfacesFan control and monitoring system functions.Supports four fans with five user-defined speed-vs-temperature setpointsSupports two-, three-, and four-wire fans

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. 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.