AOZ5317UQI

Overview

The AOZ5317UQI is a DrMOS power stage from Alpha & Omega Semiconductor Inc., designed for synchronous buck converters. It integrates a half-bridge driver and power MOSFETs in a 31-QFN(5x5) package. The device supports a PWM interface with a supply voltage range of 4.5V to 5.5V and handles load voltages from 2.5V to 25V. It delivers a continuous output current of 60A per channel with a peak current capability of 120A. The component operates within a junction temperature range of -40°C to 150°C.

Feature Summary

• Integrates bootstrap circuitry, diode emulation, and status flags for efficient power management.
• Includes comprehensive fault protection mechanisms such as over-temperature, short-circuit, and under-voltage lockout.

Applications

• Synchronous buck converter designs
• High-density point-of-load regulation

Procurement Notes

Verify the specific suffix 'U' against official datasheets to confirm functional differences from standard variants like the NQI. Ensure compatibility with required control interfaces and thermal management solutions. Confirm RoHS compliance and assembly site details prior to ordering. Cross-reference pinouts and electrical specifications to prevent integration errors in existing designs.

Selection Notes

Select this component for applications requiring high current density in compact footprints. The integrated DrMOS architecture reduces external component count. Evaluate thermal performance requirements given the 150°C junction limit. Ensure the controller provides appropriate PWM signals compatible with the 4.5V to 5.5V supply range.

Part Context

This part belongs to the AOZ5317 series of DrMOS power stages. It shares architectural similarities with the AOZ5316NQI but offers higher current ratings. The series targets modern server and graphics power delivery systems where space efficiency and thermal performance are critical constraints.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.