Analyzing and mitigating parasitic capacitances in planar transformers for high-frequency operation

Planar magnetic components are compact and less susceptible to skin effect due to their thin copper layers. However, the increase in parasitic capacitance has been a challenge in high-frequency operation of planar transformers (PTs). Parasitic capacitances resonate with inductance and may damage swi...

Full description

Saved in:
Bibliographic Details
Published inJOURNAL OF POWER ELECTRONICS Vol. 24; no. 6; pp. 946 - 954
Main Authors Lee, Sujeong, Kim, Seokwon, Shin, Jong-Won, Kim, Wonhee
Format Journal Article
LanguageEnglish
Published Singapore Springer Nature Singapore 01.06.2024
전력전자학회
Subjects
Electrical Machines and Networks
Engineering
Original Article
Power Electronics
전기공학
Resonance
High frequency
Multi-layer PCB
Planar transformer
Impedance analysis
Parasitic capacitance
Online AccessGet full text

Cover

More Information
Summary:Planar magnetic components are compact and less susceptible to skin effect due to their thin copper layers. However, the increase in parasitic capacitance has been a challenge in high-frequency operation of planar transformers (PTs). Parasitic capacitances resonate with inductance and may damage switch devices. Thicker printed circuit board (PCB) and reconfigured windings are suggested in this paper to mitigate the parasitic capacitances. A detailed analysis of the parasitic capacitances is performed with a prototype PT. The resonant frequency increased from 1.27 to 1.63 MHz with a 0.4 mm thicker PCB. The reconfigured PT was 1.38 MHz, 0.3 MHz higher than the original PT.
Bibliography:https://link.springer.com/article/10.1007/s43236-024-00804-6
ISSN:1598-2092
2093-4718
DOI:10.1007/s43236-024-00804-6