Master thesis: Active snubber for full bridge converters

Göteborg, SE
den 13 oktober 2021
den 20 november 2021
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As the tech firm that created the mobile world, and with more than 54,000 patents to our name, we've made it our business to make a mark. When joining our team at Ericsson you are empowered to learn, lead and perform at your best, shaping the future of technology. This is a place where you're welcomed as your own perfectly unique self, and celebrated for the skills, talent, and perspective you bring to the team. Are you in?

Come, and be where it begins.

Who we are

Board Power, within Power Solutions, at Lindholmen/Göteborg and Kista/Stockholm develops world class power solutions for most of the Ericsson's product portfolios, covering IoT to 6G in a global environment. Our power solutions cover both analog and digital solutions within range from a couple of mW up to kW and with voltage levels mainly from 0.6Vdc to 60Vdc.

Goal with master thesis

Active snubbers can reduce voltage stress on MOSFETs and improve efficiency in the full bridge converters. This master thesis shall include

Theoretical part:

  • Research on current active snubber solutions that exist.
  • Theoretical analysis.
  • Simulate solutions.

Practical part:

  • Developing a full bridge converter with most suitable solution for active snubber.
  • Performing measurements and comparing results between currently used passive snubbers and active snubber solution.
  • Analysis of results.

Working methods

Theoretical analysis, literature study, design, and evaluation of hardware.


  • Education: Master within Electrical engineering, Physics engineering or similar.
  • An eager interest in power products/area
  • English skills (fluent), both oral and written
  • Suitable for 1 to 2 students

What´s in it for you?

Here at Ericsson, our culture is built on over a century of courageous decisions. With us, you will no longer be dreaming of what the future holds - you will be redefining it. You won't develop for the status quo, but will build what replaces it. Joining us is a way to move your career in any direction you want; with hundreds of career opportunities in locations all over the world, in a place where co-creation and collaboration are embedded into the walls. You will find yourself in a speak-up environment where empathy and humanness serve as cornerstones for how we work, and where work-life balance is a priority. Welcome to an inclusive, global company where your opportunity to make an impact is endless!

What happens once you apply?

To prepare yourself for next steps, please explore here:

Location for this role: Gothenburg, Sweden

Recruiter: Sylwia Kwiecień

Last day to apply: 31st October

Kindly note that we cannot process applications sent via email.

Do you believe that an organization fostering an environment of cooperation and collaboration to execute with speed creates better business value? Do you value a culture of humanness, where fact based decisions are important and our people are encouraged to speak up? Do you believe that diverse, inclusive teams drive performance and innovation? At Ericsson, we do.

We provide equal employment opportunities without regard to race, color, gender, sexual orientation, transgender status, gender identity and/or expression, marital status, pregnancy, parental status, religion, political opinion, nationality, ethnic background, social origin, social status, indigenous status, disability, age, union membership or employee representation and any other characteristic protected by local law or Ericsson's Code of Business Ethics.

Primary country and city: Sweden (SE) || || Göteborg || [[mfield2]]

Req ID: 548236

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