AOZ32033AQI

Specialized ICS Overview

The AOZ32033AQI is an integrated half-bridge coil driver designed for wireless charger transmitters. It incorporates high-side and low-side N-channel MOSFETs with intelligent slew-rate control to optimize EMI and efficiency. The device supports a maximum operating input voltage of 28V, accommodating 12V and 24V systems. Key electrical parameters include a typical on-resistance (RDS(on)) of 11mΩ for both high-side and low-side switches at VIN=12V and VCC=5V. Propagation delays range from 45ns to 75ns depending on the input transition. The unit operates within an ambient temperature range of -40°C to +85°C.

Specialized ICS Feature Summary

• Integrated half-bridge solution with adjustable gate drive source/sink current via external resistor on SRC pin
• Supports 12V and 24V voltage rail systems with a maximum operating input voltage of 28V
• Includes built-in protection mechanisms: VCC UVLO, bootstrap UVLO, over-temperature protection (OTP), and non-overlapping logic
• Thermally enhanced 18-pin 3mm x 3mm QFN package with integrated bootstrap diode

Specialized ICS Applications

• Wireless charger transmitter circuits
• Full-bridge topology power converters with resonant tank circuits
• 15W to 30W coil driver applications

Specialized ICS Procurement Notes

Verify component authenticity through authorized Alpha & Omega Semiconductor distributors. Confirm RoHS compliance and Pb-free plating status as specified in the manufacturer's green policy documentation. Ensure the ordering suffix matches the required tape and reel or cut tape packaging format for surface mount assembly processes.

Specialized ICS Selection Notes

Select this component for designs requiring precise EMI management through programmable slew rates. Ensure the application utilizes a full-bridge topology with a resonant tank for optimal performance. Verify that the PCB layout accommodates the 18-QFN (3x3) footprint and provides adequate thermal dissipation paths for the VIN and VHB pins to maintain junction temperatures within limits.

Specialized ICS Part Context

This part belongs to the specialized ICs category under coil drivers. It is manufactured by Alpha & Omega Semiconductor Inc. The device is specifically engineered for wireless charging infrastructure, distinguishing itself from general-purpose gate drivers by its integrated MOSFETs and application-specific protection features tailored for transmitter coils.

Specialized ICS Replacement Considerations

No direct public substitute part numbers are documented in the provided datasheet. Designers should evaluate functional equivalents based on half-bridge integration, 28V max voltage rating, and 18-QFN package compatibility if sourcing constraints exist.

Specialized ICS FAQ

How is the slew rate controlled?

The slew rate is adjusted by connecting an external resistor between the SRC pin and GND. This resistor sets the gate drive source and sink current, allowing optimization of EMI and driver losses.

What protection features are included?

The AOZ32033AQI includes VCC Under-Voltage Lockout (UVLO), Bootstrap UVLO, Over-Temperature Protection (OTP) at 150°C, and a non-overlapping mechanism to prevent shoot-through currents.

What is the recommended input voltage range?

The device supports a supply voltage (VIN) range of 3.8V to 28V, making it suitable for both 12V and 24V voltage rail systems commonly used in wireless charging applications.