Lead HW Engineer

Saur Energy International; Bengaluru; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Larsen & Toubro (L&T) in India seeks a skilled power electronics hardware engineer to design HV EV modules such as motor control units, traction inverters, PDU, OBC and DC-DC converters for 400V systems.

You will define hardware architecture, select components, perform derating and EMI/EMC considerations, and drive schematics, tests and cross-functional reviews across mechanical, thermal, software and control teams.

Qualifications

• Total experience – 3 to 10 years in power electronics hardware design, preferably in EV, automotive, industrial drives, chargers, DC-DC converters, motor controllers or high-voltage systems.
• M.E. / M.Tech in Power Electronics and Drives.
• Knowledge of power electronics fundamentals, HV EV systems, component selection, magnetics design, schematics, derating, EMI/EMC basics.

Responsibilities

• Design and develop hardware for 400V EV power electronics systems including Motor Control Unit/Traction Inverter, PDU, OBC, DC-DC, and HV interconnects.
• Perform detailed hardware architecture definition based on system and vehicle requirements.
• Select components for high voltage EV applications (IGBT/SiC/MOSFET, gate drivers, capacitors, sensors, fuses, busbars).
• Carry out derating analyses and design calculations.
• Develop detailed schematics for power stages, gate drivers, sensing, protections, and interfaces.
• Coordinate with PCB layout for high current HV routing, EMI/EMC considerations, isolation barriers.
• Carry out functional bring-up of prototype hardware and complete EV systems.
• Perform board/subsystem testing and support integration with motor, battery simulator, BMS.
• Support design reviews, schematic/PCB reviews, and customer/OEM discussions.
• Collaborate with mechanical, thermal, software, motor, gearbox, and vehicle integration teams.

Skills

Power electronics fundamentals

HV EV systems knowledge

Schematic design

Thermal and electrical derating

EMI/EMC design basics

Bring-up and debugging

Automotive development processes

Vendor coordination

Education

M.E. / M.Tech in Power Electronics and Drives

Job description

Roles and Responsibilities

• Design and develop hardware for 400V EV power electronics systems including Motor Control Unit/Traction Inverter, Power Distribution Unit, On-Board Charger, DC-DC Converter, DC Bus interconnect architecture, X-in-1 system level integration
• Perform detailedhardware architecture definitionbased on system requirements, vehicle requirements, power ratings, thermal limits, safety requirements, and packaging constraints.
• Select suitable components for high voltage EV applications, including IGBT/SiC/MOSFET, Gate Drivers, DC Link Capacitors, Sensors, Sensing circuits, contactors, fuses, magnetics, EMI/EMC filters, Busbars, etc
• Carry out component derating analysis and prepare design calculations
• Develop detailed schematics for power stages, gate drivers, sensing paths, auxiliary power supplies, protections, control cards, comm interfaces, HVIL and safety circuits
• Work closely with PCB layout engineers for – high current layout, high voltage creepage and clearance, loop optimisations, EMI-EMC sensitive routing, isolation barriers, vias and copper balancing, groundings, etc.
• Carry out functional bring-up of prototype hardware boards and complete EV power electronics systems.
• Perform board level and subsystem level testing.
• Support integration testing with motor, gearbox, battery simulator, dyne, vehicle controller and BMS.
• Support integration ofMCU, PDU, OBC, DC-DC, motor, gearbox, cooling system and control electronicsinto a compact X-in-1 EV drivetrain system.
• Support design reviews, schematic reviews, PCB reviews, prototype reviews and customer/OEM technical discussions.
• Coordinate with mechanical, thermal, software, motor, gearbox and vehicle integration teams.

Eligibility

• Total experience – 3 to 10 years in power electronics hardware design, preferably in EV, automotive, industrial drives, chargers, DC-DC converters, motor controllers or high-voltage systems.
• M.E. / M.Tech in Power Electronics and Drives.
• The candidate should have knowledge of power electronics fundamentals, HV EV systems, components selection, magnetics design, schematics designs, thermal and electrical derating, EMI EMC design basic

Desired Skills

• Understanding of automotive development processes

Experience working with suppliers, semiconductor vendors and PCB manufacturers

Hands-on approach to hardware bring-up and debugging

Willingness to work in fast-paced EV product development environments

L&T Company Overview / About Us:

L&T is a USD 30 billion Indian multinational engaged in EPC Projects, Hi-Tech Manufacturing, and Services, operating across multiple geographies. A strong, customer–focussed approach and the constant quest for top-class quality have enabled L&T to attain and sustain leadership in its major lines of business for eight decades.

Given L&T’s capability in strategic electronics and leveraging its foray into semiconductor design and well-established capabilities in L&T Technology Services, the business is expanding its offerings to cover industrial electronic modules, products and systems in critical sectors of Power Electronics, Automotive Electronics, Industrial Robotics & Automation, Communication Platforms and Electronic Systems Design & Manufacturing (ESDM). The focus products under Automotive Electronics are ADAS, Electrification & Connectivity related products.