What is it about?
This paper presents performance evaluation of saturating class - C driver circuit for inductive wireless power transfer. Exact link is designed following link optimization theory to select parameters of the objective circuit. By exploring specific parameters of drain to source voltage effect on overall circuit, single MOSFET is used in the proposed driver circuit design instead of two parallel MOSFETs used in conventional driver circuit. Simulation results show that the proposed driver circuit provides a significant improvement in the driver efficiency (90.34%) as well as in the overall efficiency compared to the existing driver circuit. Furthermore, from the performance comparison, it is observed that the transferred output power (14.94 mW) has also been improved considerably.
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Why is it important?
We present a performance evaluation of a saturating class-C driver circuit specifically optimized for inductive wireless power transfer (WPT), addressing a key challenge in high-efficiency, low-power electronic systems. This is important in applications such as implantable medical devices, sensor networks, and portable electronics, where minimizing power loss while maximizing transfer efficiency is crucial. Two significant contributions of this work are: a) the design of a novel driver circuit using a single MOSFET instead of two, significantly simplifying the architecture while reducing power consumption and hardware complexity; and b) a demonstration of superior performance in both driver efficiency (90.34%) and output power delivery (14.94 mW) when compared with conventional dual-MOSFET topologies. These findings contribute to the advancement of compact, energy-efficient wireless charging systems—enabling more practical implementations in space- and energy-constrained environments.
Perspectives
I hope this article encourages readers to see how detailed circuit-level improvements—like simplifying a driver circuit design—can have a large impact on the future of wireless power transfer. What might seem like a small optimization can actually translate into meaningful real-world benefits: lighter systems, longer-lasting devices, and greater accessibility in fields like biomedical implants or IoT. My motivation for this work was not just to increase efficiency, but to show that careful engineering can make powerful systems simpler, smaller, and more sustainable. More than anything, I hope readers come away from this study with a renewed appreciation for how elegant circuit design can unlock broader technological possibilities.
Md Khurram Monir Rabby
Read the Original
This page is a summary of: Performance evaluation of saturating class - C driver circuit for inductive wireless power transfer, December 2016, Institute of Electrical & Electronics Engineers (IEEE),
DOI: 10.1109/icece.2016.7853967.
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