The UCD90320 device is a 32-rail PMBus addressable power sequencer and system manager in a compact 0.8-mm pitch BGA package.
●The 24 integrated ADC channels (AMONx) monitor the power supply voltage, current, and temperature. Eighty-four GPIO pins can be used for 8 digital monitor (DMONx), 32 power supply enable (ENx), 24 margining (MARx), 16 Logical GPO, 32 GPI, cascading, and system function.
●The 32 ENx pins and the 16 LGPOx pins can be configured to be active driven or open drain outputs.
●Nonvolatile event logging preserves fault events after power dropout. Black box fault log feature preserves the status for all rails and I/O pins when the first fault occurs. The cascading feature offers convenient ways to manage up to 128 voltage rails through one SYNC_CLK pin connection. Fault pin feature coordinates among cascaded devices to take synchronized fault responses. The pin-selected rail states feature employs up to 3 GPIs to control up to eight user-defined power states. These states can implement system low-power modes as outlined in the (ACPI) specification.
●For all available packages, see the orderable addendum at the
● Sequence, Monitor, and Margin 24 Voltage Rails Plus 8 Digital Rails
● Monitor and Respond to OV, UV, OC, UC, Temperature, Time-Out, and GPI-Triggered Faults
● Flexible Sequence-On and Off Dependencies, Delay Time, Boolean Logic, and GPIO Configuration to Support Complex Sequencing Applications
● 4 Rail Profiles for Adaptive Voltage Identification (AVID) Voltage Regulator
● High-Accuracy Closed-Loop Margining
● Active Trim Function Improves Rail Output Voltage Accuracy
● Advanced Nonvolatile Event Logging To Assist System Debugging
● Single-Event Fault Log (100 entries)
● Peak Value Log
● Black Box Fault Log to Save Status of All Rails and I/O Pins at the First Fault
● Easily Cascade Up to 4 Power Sequencers and Take Coordinated Fault Responses
● Programmable Watchdog Timer and System Reset
● Pin-Selected Rail State
● PMBus 1.2 Compliant
