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 Energetic response EMI EMC compliance Start-up

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