UCD90120A is a 12-rail power supply sequencer and monitor with ACPI support

This post sponsored by Texas Instruments.

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. All rails are sampled every 400 µs. 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 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. There is nonvolatile error and peak-value logging per monitor and closed-loop margining for 10 rails.

For more information about this product, click here.
For detailed information about the tool mentioned above, click here.
To request a sample, click here.
To download a datasheet, click here.

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