UCD90120A Series

12-Rail Power Supply Sequencer and Monitor with ACPI Support

Catalog

12-Rail Power Supply Sequencer and Monitor with ACPI Support

Part	Package / Case	Voltage - Threshold	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Type	Supplier Device Package	Reset Timeout	Output	Reset	Number of Voltages Monitored
Texas Instruments UCD90120ARGCR	64-VFQFN Exposed Pad	Adjustable/Selectable	Surface Mount	-40 °C	110 °C	Sequencer	64-VQFN (9x9)	2 µs	Open Drain Push-Pull	Active High/Active Low	12
Texas Instruments UCD90120RGCR	64-VFQFN Exposed Pad	Adjustable/Selectable	Surface Mount	-40 °C	110 °C	Sequencer	64-VQFN (9x9)	2 µs	Open Drain Push-Pull	Active High/Active Low	12
Texas Instruments UCD90120RGCT	64-VFQFN Exposed Pad	Adjustable/Selectable	Surface Mount	-40 °C	110 °C	Sequencer	64-VQFN (9x9)	2 µs	Open Drain Push-Pull	Active High/Active Low	12
Texas Instruments UCD90120ARGCT	64-VFQFN Exposed Pad	Adjustable/Selectable	Surface Mount	-40 °C	110 °C	Sequencer	64-VQFN (9x9)	2 µs	Open Drain Push-Pull	Active High/Active Low	12

Catalog

12-Rail Power Supply Sequencer and Monitor with ACPI Support

Key Features

• Monitor and Sequence 12 Voltage RailsAll Rails Sampled Every 200µs12-bit ADC With 2.5V, 0.5% Internal VREFSequence Based on Time, Rail and Pin DependenciesSix Hardware Comparators for Power Supply Fault Response in < 80µsFour Programmable Under-Voltage and Over-Voltage Thresholds per MonitorProgrammable Fault Response Including Retries, Shutdown Slaves and ResequenceNon-Volatile Error LoggingStores Up To 18 FaultsLog Peak Values For All Monitor InputsClosed Loop Margining for 10 RailsMargin Output Adjusts Rail Voltage to Match User-Defined Margin ThresholdsUnused Margin Outputs can be Used as GPIOs or General-Purpose PWM OutputsWatchdog Timer and System ResetProgrammable WDT Reset and Start TimesConfigurable System Reset Pulse WidthsFlexible Digital I/O ConfigurationBoolean Logic Builder for GPO ConfigGPIOs can be Used as Enables, Resets, Power Good and Other On-Board FunctionsWide Range Single Supply (3.3V to 12V)Internal Temperature Sensor64-Pin QFN PackageJTAG and I2C/SMBus/PMBus InterfacesFusion Digital Power GUI for Configuring and Monitoring Device OperationAPPLICATIONSIndustrial / ATETelecommunications and Networking EquipmentServers and Storage SystemsAny System Requiring Sequencing and Monitoring of Multiple Power RailsMonitor and Sequence 12 Voltage RailsAll Rails Sampled Every 200µs12-bit ADC With 2.5V, 0.5% Internal VREFSequence Based on Time, Rail and Pin DependenciesSix Hardware Comparators for Power Supply Fault Response in < 80µsFour Programmable Under-Voltage and Over-Voltage Thresholds per MonitorProgrammable Fault Response Including Retries, Shutdown Slaves and ResequenceNon-Volatile Error LoggingStores Up To 18 FaultsLog Peak Values For All Monitor InputsClosed Loop Margining for 10 RailsMargin Output Adjusts Rail Voltage to Match User-Defined Margin ThresholdsUnused Margin Outputs can be Used as GPIOs or General-Purpose PWM OutputsWatchdog Timer and System ResetProgrammable WDT Reset and Start TimesConfigurable System Reset Pulse WidthsFlexible Digital I/O ConfigurationBoolean Logic Builder for GPO ConfigGPIOs can be Used as Enables, Resets, Power Good and Other On-Board FunctionsWide Range Single Supply (3.3V to 12V)Internal Temperature Sensor64-Pin QFN PackageJTAG and I2C/SMBus/PMBus InterfacesFusion Digital Power GUI for Configuring and Monitoring Device OperationAPPLICATIONSIndustrial / ATETelecommunications and Networking EquipmentServers and Storage SystemsAny System Requiring Sequencing and Monitoring of Multiple Power Rails

Description

The UCD90120A 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 UCD90120A offers support for 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 UCD90120A 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 UCD90120A offers support for 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.