AOZ5616BQI

Overview

The AOZ5616BQI is a high-efficiency synchronous buck power stage module from Alpha & Omega Semiconductor. It integrates two asymmetrical MOSFETs and an optimized driver within a compact 5mm x 5mm QFN-31L package. The device supports a power supply range of 4.5V to 20V and a driver supply range of 4.5V to 5.5V. It delivers a continuous output current of 70A, with peak capabilities up to 90A for 10ms pulses and 130A for 10µs pulses. Switching frequencies reach up to 2MHz. Control inputs include PWM and SMOD# interfaces compatible with 3V logic.

Feature Summary

• Integrates asymmetrical MOSFETs optimized for fast switching and low conduction loss
• Supports diode emulation mode via SMOD# control for improved light-load efficiency
• Features integrated bootstrap switch and comprehensive protection mechanisms
• Designed with low parasitic inductance layout to minimize EMI signature

Applications

• Memory and graphic cards
• VRMs for motherboards
• Point of load DC-DC conversion

Procurement Notes

Verify the specific suffix against official Alpha & Omega Semiconductor documentation to confirm exact electrical ratings and pinout compatibility. Ensure the ordering part number matches the required thermal and electrical specifications for the target application design.

Selection Notes

Select this component for applications requiring high current density and efficient power conversion in compact form factors. Evaluate the 70A continuous rating against thermal management requirements and ensure the 2MHz switching capability aligns with system noise constraints.

Part Context

This module belongs to the AOZ56xx series of DrMOS power stages designed for demanding computing and graphics applications. It represents a solution for integrating gate drive and power switching functions into a single footprint to reduce board space and improve transient response.

Replacement Considerations

Check for AOZ5612BQI or AOZ5318NQI as potential family alternatives, verifying that their current ratings and pinouts match the design requirements before substitution.