UCD90120 Series
12-Rail Power Supply Sequencer and Monitor with ACPI Support
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Mounting Type | Output | Number of Voltages Monitored▲▼ | Reset | Reset Timeout▲▼ | Package / Case | Voltage - Threshold | Operating Temperature▲▼ | Operating Temperature▲▼ | Type | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|
Surface Mount | Open Drain, Push-Pull | 12 ul | Active High/Active Low | 0.0000019999999949504854 s | 64-VFQFN Exposed Pad | Adjustable/Selectable | 110 °C | -40 °C | Sequencer | 64-VQFN (9x9) | |
Surface Mount | Open Drain, Push-Pull | 12 ul | Active High/Active Low | 0.0000019999999949504854 s | 64-VFQFN Exposed Pad | Adjustable/Selectable | 110 °C | -40 °C | Sequencer | 64-VQFN (9x9) |
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™ InterfacesMonitor 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™ Interfaces
Description
AI
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.