Control Engineering (Software)

Role Summary

The Embedded Software Engineer 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.

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 7-12 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.