AOZ5316UQI

Overview

The AOZ5316UQI is a DrMOS power stage manufactured by Alpha & Omega Semiconductor Inc., designed for synchronous buck converter applications. It integrates a half-bridge driver and high-side/low-side MOSFETs in a compact 31-QFN (5x5) package. The device supports a load voltage range of 2.5V to 25V and operates with a supply voltage of 4.5V to 5.5V. It delivers an output current of 55A per channel with a peak current capability of 120A. The component features PWM interface control, bootstrap circuitry, diode emulation, and status flags. Operating temperature ranges from -40°C to 150°C junction temperature.

Feature Summary

• Integrates half-bridge driver and power MOSFETs into a single DrMOS module for space-constrained designs
• Supports PWM input control with integrated bootstrap circuit and diode emulation functionality
• Includes comprehensive fault protection mechanisms such as over-temperature, shoot-through, and UVLO
• Provides status flag outputs for monitoring operational state

Applications

• Synchronous buck converters
• Point-of-load (POL) regulation
• Server and storage power systems

Procurement Notes

Verify the specific suffix 'UQI' against official Alpha & Omega Semiconductor documentation to confirm pinout and functional differences compared to standard variants like 'NQI'. Ensure compatibility with required thermal management solutions given the QFN package. Confirm RoHS compliance status through manufacturer datasheets prior to integration.

Selection Notes

Select this component when designing high-current synchronous buck converters requiring integrated gate drive and power stages. Consider the 55A continuous current rating and 25V maximum load voltage limits. Evaluate thermal performance requirements due to the dense 31-QFN packaging. Verify that the PWM control interface aligns with the system controller specifications.

Part Context

The AOZ5316 series belongs to Alpha & Omega Semiconductor's DrMOS portfolio, combining drivers and power switches. The AOZ5316UQI is a variant within this family, distinguished by its specific package and electrical characteristics. It shares core architecture with related models like the AOZ5317, differing primarily in current ratings and package options.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.