Senior Power Magnetics Engineer

Delta, founded in 1971, is a global leader in switching power supplies and thermal management products with a thriving portfolio of smart energy-saving systems and solutions in the fields of industrial automation, building automation, telecom power, data center infrastructure, EV charging, renewable energy, energy storage and display, to nurture the development of smart manufacturing and sustainable cities. As a world-class corporate citizen guided by its mission statement, “To provide innovative, clean and energy-efficient solutions for a better tomorrow,” Delta leverages its core competence in high-efficiency power electronics and its ESG-embedded business model to address key environmental issues, such as climate change. Delta serves customers through its sales offices, R&D centers and manufacturing facilities spread over close to 200 locations across five continents. Delta has 158 sales offices, 72 R&D centers and 48 manufacturing facilities worldwide.

Throughout its history, Delta has received various global awards and recognition for its business achievements, innovative technologies, and dedication to ESG. Since 2011, Delta has been listed on the DJSI World Index of Dow Jones Sustainability™ Indices for 11 consecutive years. In 2021, Delta was also recognized by CDP with leadership level ratings for its substantial contribution to climate change and water security issues and named Supplier Engagement Leader for its continuous development of a sustainable value chain.

Senior Power Magnetics Engineer

Job Summary

The Senior Power Magnetics Engineer is responsible for the design, development, analysis, and validation of magnetic components for advanced power electronic systems. This role leads the design of transformers, inductors, chokes, current sensors, and other magnetic devices used in AC/DC, DC/DC, and high-frequency power conversion applications. The engineer works closely with power electronics, mechanical, manufacturing, and test engineering teams to optimize performance, efficiency, thermal management, manufacturability, and reliability from concept through production.

Key Responsibilities

• Design and develop custom magnetic components, including transformers, inductors, common-mode chokes, coupled inductors, and current transformers for power conversion systems.
• Perform magnetic, electrical, thermal, and mechanical analyses to optimize efficiency, power density, EMI performance, and reliability.
• Select appropriate magnetic core materials, winding configurations, insulation systems, and conductor technologies based on application requirements.
• Develop high-frequency magnetics for isolated and non-isolated AC/DC and DC/DC converters.
• Utilize finite element analysis (FEA) and electromagnetic simulation tools to model magnetic flux, core losses, leakage inductance, saturation, and thermal behavior.
• Collaborate with power electronics engineers to optimize converter topologies, switching frequencies, and magnetic component performance.
• Develop prototype magnetic assemblies and oversee laboratory testing and validation.
• Define test procedures and evaluate magnetic performance, including inductance, impedance, efficiency, core loss, temperature rise, and EMI characteristics.
• Conduct design reviews, root cause analysis, and corrective actions for product and manufacturing issues.
• Support Design for Manufacturability (DFM), Design for Assembly (DFA), and Design for Reliability (DFR) initiatives.
• Work with suppliers to qualify magnetic materials, cores, bobbins, wire, and insulation systems.
• Prepare engineering documentation, including specifications, calculations, drawings, Bills of Materials (BOMs), and test reports.
• Mentor junior engineers and provide technical leadership on magnetics design best practices.
• Support New Product Introduction (NPI) activities through production launch and continuous improvement efforts.

Qualifications

• Bachelor's degree in Electrical Engineering, Power Electronics, Electromagnetics, or a related engineering discipline; Master's or Ph.D. preferred.
• 8–10 years of experience designing magnetic components for power electronics applications.
• Strong understanding of magnetic circuit design, electromagnetic theory, and power conversion principles.
• Experience designing magnetics for high-frequency switching converters, including LLC resonant, flyback, forward, half-bridge, full-bridge, and phase-shifted topologies.
• Knowledge of ferrite, powdered iron, nanocrystalline, amorphous, and laminated magnetic materials.
• Experience with electromagnetic simulation and FEA software such as ANSYS Maxwell, COMSOL Multiphysics, Altair Flux, JMAG, or equivalent.
• Proficiency using laboratory equipment including oscilloscopes, impedance analyzers, LCR meters, power analyzers, thermal imaging systems, and high-voltage test equipment.
• Ability to interpret electrical schematics, PCB layouts, and mechanical drawings.
• Strong analytical, troubleshooting, and problem-solving skills.

Preferred Skills

• Experience designing magnetics for electric vehicles (EVs), aerospace, renewable energy, energy storage systems, industrial automation, or medical devices.
• Knowledge of wide-bandgap semiconductor technologies, including SiC and GaN.
• Familiarity with EMI/EMC compliance and magnetic shielding techniques.
• Experience with thermal management, insulation coordination, creepage and clearance requirements, and safety standards.
• Knowledge of UL, IEC, IEEE, MIL, or automotive standards applicable to magnetic components and power electronics.
• Experience with statistical design methods, reliability analysis, and failure mode and effects analysis (FMEA).
• Familiarity with Lean product development and continuous improvement methodologies.

Key Performance Indicators (KPIs)

• Magnetic component efficiency
• Power density improvement
• Thermal performance
• First-pass design success rate
• Prototype validation success
• Product reliability and field performance
• EMI/EMC compliance
• Cost reduction through optimized magnetic designs
• New product launch milestones
• On-time completion of engineering deliverables

Physical Requirements

• Ability to work in laboratory and manufacturing environments.
• Ability to operate electrical test equipment and prototype hardware safely.
• Occasional lifting of up to 25 pounds.
• Ability to travel up to 20% for supplier visits, customer support, or manufacturing qualification activities.

Benefit at Delta Electronics Americas: Life at Delta

EEO Statement:

Delta Electronics Americas is an Equal Opportunity Employer and is committed to compliance with all applicable federal, state, and local laws. Delta Electronics America is committed to fostering a diverse, inclusive, and respectful workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, national origin, disability, veteran status, or any other protected characteristic.

Actual pay will depend on factors such as location, skills, experience, market conditions, and business needs. This role may also be eligible for incentive pay, subject to the terms of the applicable plan. Eligible employees receive company-provided benefits in accordance with plan terms and eligibility requirements. Benefits include health coverage, wellness resources, retirement savings plan, paid time off, and other company‑sponsored programs; parental leave is provided in accordance with applicable law.