UCD9090-Q1
Overview
The UCD9090-Q1 is a 10-rail PMBus and I2C addressable power-supply sequencer and monitor. The device integrates a 12-bit ADC for monitoring up to 10 power-supply voltage inputs.
- 1 Qualified for automotive applications
- AEC-Q100 qualified with the following results: - Device temperature grade 1: -40°C to 125°C ambient operating temperature range - Device HBM ESD classification level H2 - Device CDM ESD classification level C4B
- UCD9090-Q1 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 undervoltage and overvoltage 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 watchdog timer and system reset
- Flexible digital I/O configuration
- Pin-selected rail states
- Cascading multiple devices
- 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
