AOZ5049QI_3

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 4.5V to 25V input range with up to 35A output current. It operates at switching frequencies up to 2MHz and features TTL/tri-state compatible PWM and FCCM inputs for precise control.

Power Driver Modules Feature Summary

• Integrates optimized High Side and Low Side MOSFETs with an internal gate driver
• Supports continuous conduction mode (CCM) and diode emulation mode via the FCCM pin
• Includes an integrated bootstrap Schottky diode and under-voltage lockout protection
• Features a low-inductance layout designed to minimize 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 component authenticity through authorized distribution channels. Confirm RoHS compliance status as per manufacturer documentation. Ensure proper handling precautions due to ESD sensitivity. Validate that the specific revision matches design requirements before integration into final products.

Power Driver Modules Selection Notes

Select this module for applications requiring high efficiency and fast transient response. Consider the thermal resistance characteristics when designing heat dissipation solutions. Ensure the external controller provides compatible logic levels for the PWM and FCCM inputs. Evaluate PCB layout constraints to accommodate the small QFN footprint effectively.

Power Driver Modules Part Context

This component belongs to the AOZ50xx series of synchronous buck power stages. It is designed to meet Intel DrMOS specifications, specifically IMVP8 form fit and function. The module replaces older discrete solutions by integrating power switches and drivers into a single compact package.

Power Driver Modules Replacement Considerations

The official replacement product listed in the datasheet is the AOZ5048QI. Designers should verify pin compatibility and electrical specifications before substituting components.

Power Driver Modules FAQ

How does the FCCM pin affect operation?

When held high, the device operates in continuous conduction mode. When held low, it activates diode emulation mode for asynchronous operation during light loads or startup.

What is the purpose of the VCC pin?

The VCC pin serves as the input bias and Low Side MOSFET gate driver rail, typically requiring a 5V supply connected directly to PGND via a ceramic capacitor.

Is the AOZ5049QI suitable for new designs?

No, the datasheet explicitly states that the AOZ5049QI is not recommended for new designs.