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Infineon Technologies · Xi'An, Shaanxi, CN

# Principal Engineer PSU System Application

Xi'An, Shaanxi, CN Full-time Senior individual contributor Operations 

Listed on Infineon Technologies’s official careers site. Posted September 5, 2026. Check that it is still open and apply there.
[Apply on Infineon Technologies’s careers site →](https://jobs.infineon.com/careers/job/563808971532682)

[OpenNash Jobs](https://jobs.opennash.com/) / [Infineon Technologies](https://jobs.opennash.com/companies/infineon-technologies/) / Principal Engineer PSU System Application

## Job description

Define ORV3/MCRPS PSU requirements for 1Φ/3Φ AI front-end power supplies (up to ~50 V or HV outputs such as 400/800 V depending on architecture). Select and optimize PFC/LLC and multilevel topologies (e.g., Vienna, ANPC) for efficiency, power density, and manufacture ability. Design magnetics/transformers and ensure robust isolation strategy, sensing/protection, and thermal derating. Drive redundancy (N+1) behavior, EMI mitigation, and compliance alignment; correlate simulations with lab data.

Scout new platform concepts and evolving standards; collaborate with digital supervision (PSoC™/XMC™) and Infineon power devices (CoolSiC™,CoolMOS™, CoolGAN™, CoolSET). BSEE/MSEE in Electrical Engineering, Computer Engineering, or related field with 6-8 years of experience. Demonstrated AC/DC PSU design experience (PFC, LLC, holdup, inrush, protection, EMI). Hands-on with power stage simulation, magnetics design, and compliance-driven validation.

Strong system thinking for redundancy, reliability, and production readiness. Open-minded, communicative; able to work under pressure and independently. We are on a journey to create the best Infineon for everyone. This means we embrace diversity and inclusion and welcome everyone for who they are. At Infineon, we offer a working environment characterized by trust, openness, respect and tolerance and are committed to give all applicants and employees equal opportunities.

We base our recruiting decisions on the applicant´s experience and skills.

## At a glance
- Posted by the employer: Sep 5, 2026
- First seen by OpenNash: Oct 13, 2026
- Last checked: Oct 20, 2026
- Listed for: 45 days
- Location: Xi'An, Shaanxi, CN
- Employment type: Full-time[Apply on Infineon Technologies’s careers site →](https://jobs.infineon.com/careers/job/563808971532682)

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