●The UCD90120 Power Supply Sequencer and System Health Monitor monitors and sequences up to 12 independent voltage rails. The device integrates a 12-bit ADC with a 2.5V internal reference for monitoring up to 13 power supply voltage, current, or temperature inputs.
●26 GPIO pins can be used for power supply enables, power-on reset signals, external interrupts, cascading multiple UCD90120 devices, or other system functions. 12 of these pins can be used as PWM outputs for power supply margining or general-purpose PWM functions including clock generation for switch-mode power supplies.
●The TI Fusion Digital Power Designer 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 UCD90120 has an I2C/PMBus/SMBus communication interface for pre-production and in-system configuring and monitoring and a JTAG Port for production programming.
● Monitor and Sequence 12 Voltage Rails
● All Rails Sampled Every 200µs
● 12-bit ADC With 2.5V, 0.5% Internal VREF
● Sequence Based on Time, Rail and Pin Dependencies
● Six Hardware Comparators for Power Supply Fault Response in < 80µs
● Four Programmable Under-Voltage and Over-Voltage Thresholds per Monitor
● Programmable Fault Response Including Retries, Shutdown Slaves and Resequence
● Non-Volatile Error Logging
● Stores Up To 18 Faults
● Log Peak Values For All Monitor Inputs
● Closed Loop Margining for 10 Rails
● Margin Output Adjusts Rail Voltage to Match User-Defined Margin Thresholds
● Unused Margin Outputs can be Used as GPIOs or General-Purpose PWM Outputs
● Watchdog Timer and System Reset
● Programmable WDT Reset and Start Times
● Configurable System Reset Pulse Widths
● Flexible Digital I/O Configuration
● Boolean Logic Builder for GPO Config
● GPIOs can be Used as Enables, Resets, Power Good and Other On-Board Functions
● Wide Range Single Supply (3.3V to 12V)
● Internal Temperature Sensor
● 64-Pin QFN Package
● JTAG and I2C/SMBus/PMBus Interfaces
● Fusion Digital Power GUI for Configuring and Monitoring Device Operation
● APPLICATIONS
● Industrial / ATE
● Telecommunications and Networking Equipment
● Servers and Storage Systems
● Any System Requiring Sequencing and Monitoring of Multiple Power Rails
