AOZ5239QI

Power Driver Modules Overview

The AOZ5239QI is a high-current, high-performance DrMOS power module from Alpha & Omega Semiconductor Inc. It integrates two asymmetrical N-channel MOSFETs and an internal driver into a low-profile 5x5 QFN-31L package. The module supports a power supply range of 4.5V to 25V and a driver supply range of 4.5V to 5.5V. It delivers up to 70A peak output current with continuous operation capability up to 50A. The device operates at switching frequencies up to 2MHz and includes features such as pulse skip mode for light load efficiency, thermal warning, and thermal shutdown.

Power Driver Modules Feature Summary

• Integrates optimized asymmetrical high-side and low-side MOSFETs with an internal gate driver in a compact package.
• Supports tri-state PWM input logic compatible with 3.3V and 5V controllers, including mid-state functionality.
• Includes integrated bootstrap Schottky diode and under-voltage lockout protection.
• Features thermal warning and thermal shutdown outputs for enhanced system safety.

Power Driver Modules Applications

• Desktop computers
• Notebook computers
• Graphic cards
• Video gaming consoles

Power Driver Modules Procurement Notes

Verify the specific part number suffix against official manufacturer documentation to confirm environmental compliance and package variations. Confirm that the component meets RoHS standards if required by your design specifications. Ensure compatibility with your controller's PWM logic levels before procurement.

Power Driver Modules Selection Notes

Select this module for synchronous buck converter designs requiring high current density and fast switching speeds. Consider the 5x5mm footprint constraints and ensure adequate PCB copper area for thermal dissipation via the exposed pads. Verify that the controller supports the required PWM logic states and frequency range up to 2MHz.

Power Driver Modules Part Context

This component belongs to the DrMOS (Driver MOSFET) product family, which combines power switches and drivers into a single module. It is designed to simplify the layout and improve performance in point-of-load applications compared to discrete solutions.

Power Driver Modules Replacement Considerations

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

Power Driver Modules FAQ

How does the SMOD# pin affect the operation of the low-side MOSFET?

The SMOD# pin controls the zero-cross detection and skip mode. When driven high, it enables independent low-side operation; when low, it prioritizes discontinuous mode control; and in mid-state, it connects the PWM input to an internal bias voltage.

What protection features are included in the AOZ5239QI?

The module includes under-voltage lockout (UVLO), thermal warning (THWN), and thermal shutdown (THDN) to protect against over-temperature conditions and insufficient supply voltages.

Is the bootstrap diode external or internal?

The bootstrap diode is integrated internally within the driver circuitry of the AOZ5239QI module.