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 Robust 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

📌 Lead Firmware Dev (Bengaluru)
🏢 Larsen and Toubro
📍 Bengaluru