PhD Defence by Markus Mogensen Henriksen

Supervisors

• Principal supervisor: Professor Michael A. E. Andersen, DTU Electro, Denmark.
• Co-supervisor: PhD Dennis Øland Larsen, SkycoreSemiconductors
• Co-supervisor: PhD Pere Llimós Muntal, SkycoreSemiconductors

Assessment committee

• Associate Professor Arnold Knott, DTU Electro, Denmark (chair).
• Professor Bruno Allard, Univeristé of Lyon, France
• Associate Professor Filip Tavernier, KU Leuven, Belgium

Master of the ceremony

• Professor Per Lynggaard, DTU Electro, Denmark

Abstract:

In the pursuit of more energy-efficient and compact devices, highly-integrated switched-capacitor converters have emerged as a promising technological advancement. Unlike conventional setups that rely on inductors, these converters utilize capacitors to store energy, offering efficiency and size benefits.

This research project focused on a specific application: altering voltage from 48V to 12V, a common requirement in electronics. The approach involved optimizing capacitor usage, leading to noteworthy experimental outcomes. The converter demonstrated an efficiency of nearly 94%, effectively minimizing energy wastage. This efficiency was coupled with a substantial power output within a compact design. Addressing the challenge of initial energy surges during converter startup, this project developed solutions to ensure a smoother and safer power-up process for the converter.

Beyond refinement, the research delved into novel concepts, including the amalgamation of different technologies to further reduce energy losses. This innovative direction has the potential to extend battery life in electronic applications and mitigate energy wastage.

In essence, this work presents pragmatic advancements in power solutions. Highly-integrated switchedcapacitor converters have the potential to redefine the way devices are powered, ushering in enhanced efficiency for both users and the environment.