UCD90160A 16-Rail Power Supply Sequencer and Monitor With ACPI Support

1 Features

Monitor and sequence 16 voltage rails
- All rails sampled every 400 μs
- 12-Bit ADC with 2.5-V, 0.5% internal V_REF
- Sequence based on time, rail and pin dependencies
- Four programmable undervoltage and overvoltage thresholds per monitor
Nonvolatile error and peak-value logging per monitor (up to 12 fault detail entries)
Closed-loop margining for 10 rails
- Margin output adjusts rail voltage to match user-defined margin thresholds
Programmable watchdog timer and system reset
Easily cascade multiple power sequencers and take coordinated fault responses
Pin selected rail states for ACPI support
Flexible digital I/O configuration
Cascading multiple devices
Response and monitor to GPI-triggered fault
Multi-phase PWM clock generator
- Clock frequencies from 15.259 kHz to 125 MHz
- Capability to configure independent clock outputs for synchronizing switch-mode power supplies
JTAG and I²C/SMBus/PMBus™ interfaces