UCD90320ZWSR

The UCD90320ZWSR from Texas Instruments is an active 32-rail PMBus power sequencer and system manager. This device is designed to sequence, monitor, and margin 24 voltage rails plus 8 digital rails, offering flexible sequencing-on and off dependencies, delay times, and GPIO configurations for complex applications.

Key features include monitoring and response to OV, UV, OC, UC, temperature, time-out, and GPI-triggered faults. It supports adaptive voltage identification (AVID) with four rail profiles and provides high-accuracy closed-loop margining. The active trim function enhances rail output voltage accuracy.

For system debugging, the UCD90320ZWSR includes advanced nonvolatile event logging, a single-event fault log (100 entries), peak value log, and a black box fault log. It can be cascaded with up to 4 power sequencers for coordinated fault responses. The device also features a programmable watchdog timer and system reset, with pin-selected rail state and dual-bank configurations for fail-safe programming.

Packaged in a compact 169-NFBGA (12x12 mm) with a 0.8-mm pitch, this surface-mount component is suitable for various power management applications requiring precise control and monitoring of multiple voltage rails.