The UCD9090A is a 10-rail PMBus/I2C addressable power supplysequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 10 power supplyvoltage inputs. Twenty-three GPIO pins can be used for power supply enables, power-on resetsignals, external interrupts, cascading, or other system functions. Ten of these pins offer PWMfunctionality. Using these pins, the UCD9090A offers support for margining, and general-purpose PWMfunctions.
Specific power states can be achieved using the Pin-Selected Rail States feature. Thisfeature allows with the use of up to 3 GPIs to enable and disable any rail. This is useful forimplementing system low-power modes and the Advanced Configuration and Power Interface (ACPI)specification that is used for hardware devices.
The TI Fusion Digital Power™ designersoftware is provided for device configuration. This PC-based graphical user interface (GUI) offersan intuitive interface for configuring, storing, and monitoring all system operatingparameters.