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Reference Design
UCD9090
SLVSA30D – APRIL 2011 – REVISED MARCH 2019
UCD9090 10-rail power supply sequencer and monitor with ACPI support
1 Features
•1 Monitor and sequence 10
voltage rails – All rails sampled every 400 μs – 12-bit ADC with 2.
5-V, 0.
5% internal VREF – Sequence based on time, rail and pin dependencies – Four programmable under
voltage and over
voltage thresholds per monitor
• Nonvolatile error and peak-value logging per monitor (up to 30 fault detail entries)
• Closed-loop margining for 10 rails – Margin output adjusts rail
voltage to match user-defined margin thresholds
• Programmable watch...