comment on this article

Wireless charging transmitter solutions

Alpha and Omega Semiconductor, a developer of a broad range of power semiconductors, power ICs, and digital power products, has unveiled a new family of Coil Drivers.

The AOZ32033AQI, offers 30V, 11mOhm in a QFN3x3 package. It is an integrated half-bridge gate driver that's capable of driving high-side and low-side N-channel MOSFETs. It features SRC (Slew Rate Control) to adjust sink/source current and provides a trade-off between efficiency and EMI optimisation in the design of Wireless Charging Transmitter (TX) circuits.

The device is suited to the design of Wireless Charging TX circuits used in cordless power tools, vacuum cleaners, drones, and other consumers’ electronic equipment composed of full-bridge topology with a resonant tank circuit to get the best power conversion efficiency.

With a highly integrated package, it offers a part count reduction of up to 40% compared to traditional approaches. The new device also enables PCB space savings and higher performance in wireless transmitter circuits with high wattage of up to 30W.

Moreover, the AOZ32033AQI has multiple protection functions such as high side and low side UVLO and over-temperature protection (OTP) to make the design more robust. The device can be used for a wide range of input voltages from 4V to 28V.

Author
Neil Tyler

Comment on this article


This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Wireless evolution

​It seems like everything is connected these days: from sensors in just about ...

Get to market faster

A quick look at using Vicor's PFM and AIM in VIA packaging for your AC to Point ...

World IoT Day

ByteSnap Design, a specialist in embedded systems design and development, has ...

Digital consciousness

​Would you consider uploading your brain to the cloud if it meant you could ...

End game

How are IoT technologies keeping vaccines safe, in storage and transit, and in ...