Principal Engineer PSU System Application - Xi'an
Originally posted 9 July 2026 by the employer — open 73 days.
About the role
This role involves defining and optimizing power supply unit (PSU) requirements and topologies for AI front-end power supplies.
What you'll do
- Define ORV3/MCRPS PSU requirements for 1Φ/3Φ AI front-end power supplies.
- Select and optimize PFC/LLC and multilevel topologies for efficiency, power density, and manufacturability.
- Design magnetics/transformers and ensure robust isolation strategy, sensing/protection, and thermal derating.
- Drive redundancy (N+1) behavior, EMI mitigation, and compliance alignment, correlating simulations with lab data.
- Scout new platform concepts and evolving standards; collaborate with digital supervision (PSoC™, XMC™) and Infineon power devices (CoolSiC™, CoolMOS™, CoolSET).
What you'll need
- 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 experience with power stage simulation, magnetics design, and compliance-driven validation.
- Strong system thinking for redundancy, reliability, and production readiness.
Skills: PSU requirements, PFC/LLC, multilevel topologies, magnetics/transformers, thermal derating
This role has been open 73 days — well above the 58-day median for Power Electronics roles.
Power Electronics · Power Conversion
|
Open roles in category
53
|
Median days open
58 d
|
Median salary
$185k
|
See the full market breakdown ▾Category comparison, skills in demand, and who else is hiring
| Metric | Infineon Technologies | All employers we track in this specialty (53 roles · 24 employers) |
|---|---|---|
| Open roles in this specialty | 7 | 53 |
| Open roles in the wider Analog & Mixed-Signal family | 68 | 1337 · 105 employers |
| Median days open | 32 d | 58 d (−26 d vs this employer) |
| Median salary (USD postings) | — | $185k |
Skills observed across this category: PSU requirements, PFC/LLC, multilevel topologies, magnetics/transformers, thermal derating
Who's hiring in this category
- Infineon Technologies (this employer) · 7 open roles · median 32 d
- Renesas Electronics · 5 open roles · median 39 d
- Power Integrations · 4 open roles · median 49 d
- Analog Devices · 3 open roles · median 58 d
- Navitas Semiconductor · 3 open roles · median 24 d
- onsemi · 3 open roles · median 124 d
How we counted: 53 open Power Electronics (Power Conversion) roles from 24 employers tracked in the SemiconductorJobs index, counted 20 Sept 2026. Specialty figures count only roles carrying this exact specialty label, so an employer's related work in neighbouring specialties is not included there — it is counted in the wider Analog & Mixed-Signal family row. Figures refresh nightly.