Senior Power Electronics Engineer II

DUTIES AND RESPONSIBILITIES

• Define electrical power system architecture, and derive power subsystem requirements   

• Design DC-DC power converters, power conditioning, power management and control circuits from concept to production release 

• Perform detailed design for low to high complexity analog and power electronics circuits ranging from single DC-DC power converters to multi-output power supply modules  

• Perform modeling and analysis of analog and power electronics designs including worst-case circuit analysis (WCA), stress analysis, small signal modeling analysis, failure modes and effects analysis (FMEA), reliability analysis, and power integrity analysis 

• Develop design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans for power converters and power supply designs 

• Lead board bring-up and design verification testing of power electronics circuits and modules  

• Lead system integration, qualification campaigns, and release of analog and power electronics designs into production 

• Mentor younger engineers and foster knowledge sharing 

• Perform research and monitor power electronics industry trends to drive innovation and generate intellectual property in this area 

REQUIREMENTS AND MINIMUM QUALIFICATIONS

• Bachelor of Science (BS) degree or higher in Electrical Engineering (or related) from an accredited university 

• Minimum of 6 years of experience designing analog and power electronics  

• Experience working with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization (SWAP-C), selecting power converter topologies, and defining power management and control blocks  

• Experience with power stage design of common DC-DC power converter topologies (e.g. discrete linear regulators, Buck, Boost, Buck-boost, Flyback, Forward)  

• Experience with voltage mode control and peak current mode control modeling and characterization for DC-DC converters 

• Knowledge of control theory and stability of power electronics, including experience characterizing control loops and impedances in the laboratory  

• Experience designing power filters for low noise outputs and for power line electromagnetic compatibility (EMC) 

• Experience developing design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans  

• Experience performing worst-case circuit analysis (WCA), stress analysis, failure modes and effects analysis (FMEA), and reliability analysis for power supplies   

• Extensive hands-on experience with testing and troubleshooting electronics and power converters using laboratory instruments such as oscilloscopes, impedance analyzers, spectrum analyzers, electronic loads, and signal generators  

• Experience with electronics schematic capture and printed circuit board (PCB) layout tools such as Altium, OrCAD, Allegro or Xpedition  

• Experience with analysis and simulation tools such as SPICE, LTSPICE, SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB, MathCAD, ANSYS Q3D and SiWave, or HyperLynx  

• Excellent written and verbal communication skills 

PREFERRED EXPERIENCE

• Master of Science or PhD in Electrical Engineering with research focus in power electronics  

• Experience designing high-reliability analog and power electronics for automotive, space or defense applications 

• Knowledge of space radiation environments and radiation effects in electronics 

• Experience in power electronics applications utilizing GaN or SiC wide bandgap power semiconductor devices 

• Experience running board-level power integrity simulation using tools such as Ansys SiWave, or HyperLynx 

• Experience designing custom signal and power magnetics, and power filters for low noise and electromagnetic compatibility (EMC) 

• Knowledge of soft switching and resonant power converter topologies (e.g. LLC, CLLC, series resonant, phase shifted full bridge, dual active bridge, etc.) 

• Knowledge of power stage design for inverters and motor drives  

• Knowledge of modeling and control of inverters and motor drives  

• Experience with advanced control schemes for DC-DC power converters (e.g. voltage mode with feedforward control, constant on-time control, V2 constant on-time control, phase shift modulation, average current mode control)  

• Experience with isolation and grounding, failure mode effects analysis and fault tolerant design, and thermal management of power electronics  

• Programming skills to support hardware test and data processing (Python, MATLAB, etc.)