LOW VOLTAGE APPARATUS ›› 2024, Vol. 0 ›› Issue (6): 31-36.doi: 10.16628/j.cnki.2095-8188.2024.06.005

• Electrical Design & Discussion • Previous Articles     Next Articles

Design of Miniaturized Magnetic Coupled VRM Based on Magnetic Powder Core

ZHANG Binyi, YANG Qixin, MAO Xingkui   

  1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, China
  • Received:2024-03-21 Online:2024-06-30 Published:2024-07-15

Abstract:

In response to the large volume problem of the traditional voltage regulation modules (VRM)coupling inductance using ferrite magnetic cores, the magnetic powder cores with higher saturation magnetic density are used as the magnetic core materials to reduce the volume of magnetic components. The design scheme and process for VRM coupling inductance based on magnetic particle cores are proposed. Finally, based on the design parameters, a magnetic coupled VRM prototype is built. The current density of the prototype module reached 0.5 A/mm2, the total height of the inductor is only 5 mm, and the performance is good. The proposed scheme and design process are verified to be correct and effective through the practical examples. The miniaturization and low cross-section of VRM coupled inductors can be achieved.

Key words: voltage regulation modules(VRM), magnetic coupling, magnetic powder cores, inductor

CLC Number: