Power Supply Design Engineer – Magnetics & Maxwell Simulation

About the role

Bosch is looking for a proficient Switch‑Mode Power Supply Design Engineer to develop onboard chargers and DC‑DC converters for electric vehicles. The role covers the full development cycle from concept modelling to prototype validation, with a strong focus on magnetic component design and electromagnetic simulation.

Key responsibilities

• Design AC‑DC (11 kW) and DC‑DC (5 kW) SMPS topologies such as Flyback, LLC, Buck/Boost and PFC.
• Perform power‑stage calculations, device selection, control‑loop design and thermal/derating analysis.
• Design transformers, inductors, chokes and custom magnetic components for high‑voltage (400 V/800 V) and high‑current (200 A) applications.
• Run 2D/3D electromagnetic simulations using ANSYS Maxwell, CST or COMSOL to evaluate core and copper losses, parasitics and skin‑effect losses.
• Conduct circuit simulations with LTspice, PSIM, PSpice or MATLAB/Simulink and build hardware prototypes for efficiency, transient response and thermal performance.
• Perform hands‑on lab measurements with oscilloscopes, power analyzers, LCR meters and thermal imaging equipment.
• Debug designs, carry out root‑cause analysis and iterate improvements while ensuring compliance with IEC, UL, CISPR and automotive standards.
• Prepare schematics, BOMs, design reports, test plans and validation documentation.

Required profile

• M.Tech or PhD in Power Electronics or a related field.

Required skills

• Switch‑mode power supply design
• Power electronics
• Magnetic component design (transformers, inductors, chokes)
• ANSYS Maxwell, CST or COMSOL electromagnetic simulation
• LTspice, PSIM, PSpice, MATLAB/Simulink
• High‑voltage (400 V/800 V) and high‑current (200 A) design experience
• Skin‑effect and proximity‑effect loss analysis
• Prototype testing and lab instrumentation (oscilloscope, power analyzer, LCR meter, thermal imaging)
• IEC/UL/CISPR automotive standards compliance
• Schematic creation, BOM preparation and design documentation