UCD90320UZWST

The Texas Instruments UCD90320UZWST is an advanced 32-rail PMBus power sequencer and system manager designed for complex power management applications. This device features the capability to monitor 32 individual power supplies and sequence up to 32 outputs, offering precise control over power-up and power-down sequences.

Key specifications include a typical quiescent current of 31.4 mA and an operating temperature range of -40°C to 85°C. The UCD90320UZWST supports flexible sequencing with on/off dependencies, delay times, boolean logic, and GPIO configurations. It also includes features like Adaptive Voltage Identification (AVID) for voltage regulators, high-accuracy closed-loop margining, and active trim functions to enhance rail output voltage accuracy.

Designed for reliability, the UCD90320UZWST incorporates Single Event Upset (SEU) detection and uses an Ultra Low Alpha (ULA) mold compound to mitigate soft errors. It can monitor and respond to various fault conditions including Overvoltage (OV), Undervoltage (UV), Overcurrent (OC), Undercurrent (UC), temperature, and time-out events. Advanced nonvolatile event logging, including a single-event fault log and black box fault log, aids in system debugging.

Packaged in a 169-NFBGA (12x12 mm) format, the UCD90320UZWST is designed for surface mount applications. It offers robust fault handling and can be cascaded with up to four power sequencers for coordinated fault responses. A programmable watchdog timer and system reset function further enhance system stability.