Power Electronic Devices and Components (Jun 2022)
A detailed study of Qdc of 3D micro air-core inductors for integrated power supplies: Power supply in package (PSiP) and power supply on chip (PSoC)
Abstract
This work presents the impact of design parameters such as the number of turns, pitch, height, conductor dimensions, etc., on the dc ratio of inductance to resistance (Ldc/Rdc) (also known as dc quality factor Qdc) of 3D micro air-core inductors. We consider two well-known traditional inductors for the illustration: the toroid and the solenoid. We evaluate the performance of these inductors with respect to Qdc over a wide range of design parameters. To demonstrate our research findings, we have implemented the solenoid and toroid inductors on a PCB of size 5 mm × 5 mm.
