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Larsen & Toubro Limited

Lead Firmware Dev.

10-18 Years
15 - 50 LPA

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  • Posted a month ago

Job Description

Job Description: Lead Firmware Engineer - AC-DC / DC-DC Power Converters

Role Summary

The Firmware or Embedded Software Lead is responsible for developing, implementing, and validating embedded control software for AC-DC rectifiers, DC-DC converters, on-board/off-board chargers, SMPS, and power conversion systems.
The role focuses on control algorithms, digital control loop development, real-time firmware, protection logic, communication protocols, and hardware bring-up. End to end responsibility of firmware development and functionality.

Key Responsibilities

1. Embedded Firmware Development

Develop low-level firmware for digital controllers

TI C2000 (F2803x, F2837x, F28004x, F28x series), ARM Cortex-M microcontrollers, DSP/FPGA

Implement control loops for AC-DC and DC-DC conversion such as Current loop, voltage loop, PFC control (totem Poly, CCM, interleaved), LLC/DC-DC stage control, Soft-start, mode transition, burst modes

Develop firmware for PWM generation, ADC sampling, interrupts, timers.

2. Converter Control Algorithms

  • Design, tune, and validate algorithms for AC-DC PFC control (average, peak, digital), DC-DC resonant/LLC control,- Phase-shifted full bridge, Buck/Boost control, multi-phase interleaving
  • Implement digital compensators (PI, PID, feed-forward, PR, PLL).

3. Protection & Safety Logic

  • Develop firmware for protections OVP/UVP, OCP, SCP, Over-temperature, Soft-switching protection, Input/output surge and transient protections
  • Implement fast fault detection and safe shutdown algorithms.

4. Hardware Bring-up & Validation

  • Work with hardware engineers to validate Gate drivers, Power stage behaviour, ADC sensing circuits, Board bring-up and debugging
  • Perform real-time testing using oscilloscope, power analyser, logic analyser.

5. Digital Communication & Interfaces

  • Should implement the following protocol CAN / CAN open /1939/Modbus/RS485/Ethernet/UART/SPI/ I2C
  • Should Integrate firmware with cloud/BMS/controllers if required.

6. System Integration & Optimization

Ensure firmware meets requirements for Efficiency, Dynamic response, EMI/EMC, compliance, Start-up/shutdown sequencing, Optimize real-time control code for performance and safety.

7. Documentation

Prepare firmware architecture, Requirements & design specifications, Test cases & validation reports, Version control

Technical Skills

  • Strong understanding of power electronics control
  • Experience in AC-DC and DC-DC converter control firmware.
  • Hands-on with real-time embedded programming (C, C++).
  • Experience with digital control libraries (TI DCL, CMSIS DSP).
  • Understanding of PWM modules, ADC sampling, control timing.
  • Good debugging skills on real hardware.

Tools

  • Code Composer Studio (TI), Keil, IAR, STM32Cube.
  • MATLAB/Simulink (algorithm simulation).
  • Git, JIRA, SVN.

Qualifications

B.E / B.Tech / M.Tech in Electronics, Electrical, Embedded Systems, Power Electronics.

Experience 10-18 Years

Preferred Experience

Worked on 30+ kW-level converters for EV chargers, ESS, solar inverters, onboard chargers.

Knowledge of automotive ISO 26262, IEC 61800, IEC 61000 standards (preferred).

Exposure to SiC/GaN based systems. Experience with FPGA or RTOS is a plus.

More Info

Job Type:
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About Company

Larsen & Toubro is a USD 17 billion technology, engineering, construction, manufacturing and financial services conglomerate, with global operations.
The Company is engaged in critical sectors - infrastructure, construction, defence, hydrocarbon, heavy engineering, aerospace, power (nuclear/ thermal/hydroelectric), electrical & automation, mining and metallurgy.

Over the last 8 decades, L&T has built a reputation for quality, reliability and strong customer orientation. The Company’s contribution to infrastructure, industry and society is widely recognised. It has been described in the media as ‘the builder of the India of the 21st Century’.

Integrated capabilities span the ‘design-to-deliver’ spectrum, enabling it to offer single-point solutions across industries. Design facilities and technology centres in India and the Middle East, are backed by manufacturing facilities in eight countries.

Global Presence¬

The L&T network of offices spans the globe. It engages with leading international companies as technology process licensors or consortium partners. The Company has established itself as a major player in the infrastructure sector in the Middle East, with the successful execution of a number of key projects. Its publicly-listed IT and technology service businesses have development and delivery centres in proximity to global clients. L&T’s products, including high-tech process plant equipment, have been installed in over 30 countries, including the US, UK and China.

Corporate Sustainability

L&T was the first engineering & construction company in India to report its sustainability performance. Annual Sustainability Reports highlight achievements across the traditional three ‘Ps’ of Planet, People and Profits. Every aspect of L&T’s operations is characterized by professionalism and high standards of corporate governance.

Awards and Accolades include:

• Iconic Brand of India Award – The Economic Times, 2017
• 7th Most Valuable Brand in India –Brand Finance, 2017
• Construction Company of the Decade Award – CNBC AWAAZ, 201
• India’s Top Ten Most Respected Companies - Businessworld, 2016
• Most Respected Company (in Infrastructure) – Businessworld, 2016
• Ranked 4th in global list of green companies (Industrial sector) - Newsweek
• Top 10 Best Companies to Work For - Business Today Survey

Job ID: 141274413