AOZ5049QI

Power Driver Modules Overview

The AOZ5049QI is a high-current, high-performance DrMOS power module from Alpha & Omega Semiconductor. It integrates two asymmetrical MOSFETs and an intelligent driver in a compact 3.5mm x 5mm QFN-24L 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 35A output current with switching frequencies up to 2MHz. Designed for synchronous buck converters, it features TTL and tri-state compatible PWM and FCCM inputs.

Power Driver Modules Feature Summary

• Integrates optimized High Side and Low Side MOSFETs with an internal gate driver for fast switching and low conduction loss.
• Supports Tri-State, Continuous Conduction Mode (CCM), and Diode Emulation Mode (DCM) via dedicated control pins.
• Includes an integrated bootstrap Schottky diode and under-voltage lockout protection.
• Features a compact QFN-24L package designed to minimize parasitic inductance and EMI signature.

Power Driver Modules Applications

• Servers
• Notebook computers
• VRMs for motherboards
• Point-of-load DC/DC converters
• Memory and graphic cards

Power Driver Modules Procurement Notes

Verify the component status before procurement as the datasheet indicates this part is not recommended for new designs. Confirm that the specific QFN-24L package variant matches the required footprint. Ensure the ambient temperature range of -40°C to +85°C aligns with the target application environment. Cross-reference the manufacturer's official documentation for any recent lifecycle updates or end-of-life notifications prior to finalizing orders.

Power Driver Modules Selection Notes

Select this module for applications requiring high efficiency in synchronous buck topologies with input voltages between 4.5V and 25V. It is suitable for designs needing up to 35A output current and switching frequencies up to 2MHz. Consider the thermal resistance characteristics and PCB layout requirements for heat dissipation through the exposed pads. Ensure the controller interface supports the required PWM and FCCM logic levels for proper operation.

Power Driver Modules Part Context

The AOZ5049QI belongs to the DrMOS family from Alpha & Omega Semiconductor, designed for high-density power conversion. It complies with Intel IMVP8 specifications in form, fit, and function. The module is intended for use in demanding computing environments where space constraints and thermal performance are critical factors in system design.

Power Driver Modules Replacement Considerations

The official replacement product listed in the datasheet is the AOZ5048QI. Verify pin compatibility and electrical specifications when transitioning to this substitute.

Power Driver Modules FAQ

How does the AOZ5049QI handle asynchronous operation?

Asynchronous operation is enabled by driving the FCCM pin low, which activates diode emulation mode for the Low Side MOSFET while keeping the High Side drive unaffected.

What is the function of the FCCM pin?

The FCCM pin controls the conduction mode. A high level enables Continuous Conduction Mode (CCM), while a low level enables Discontinuous Conduction Mode (DCM) or diode emulation.

Is the AOZ5049QI suitable for new designs?

No, the datasheet explicitly states that the AOZ5049QI is not recommended for new designs due to its lifecycle status.