Open to Collaborations

Teja
Golla

Research Scholar · PMRF Fellow · IIT Kharagpur

Ph.D. Research Scholar & Prime Minister Research Fellow (PMRF) at IIT Kharagpur, specializing in power electronics, digital control, and embedded control systems. Working on next-generation multiphase DC-DC converters for high-efficiency power delivery.

Current Research

Modeling, Analysis and Design of Digital and Non-Linear Control of Multiphase DC-DC Buck Converters for Low-Voltage, High-Current Applications

48V Bus Architecture Multiphase Buck Data Center Power Electronics Digital Control FPGA DC-DC Converters

Supervisor: Dr. Santanu Kapat · IIT Kharagpur

View Related Publications →

Recent Updates

About Me

"Driven by curiosity, guided by equations, and grounded in silicon."

I am a 5th year Research Scholar and Prime Minister Research Fellow (PMRF) pursuing my Ph.D. under the supervision of Dr. Santanu Kapat in the Control Systems specialization, Electrical Engineering department, IIT Kharagpur.

I received my bachelor's degree from the Department of Electrical Engineering, IIT Kharagpur in 2021. My research interests include power electronics, digital control, and embedded control systems — currently focused on the design, modeling, and non-linear digital control of multiphase DC-DC converters for low-voltage, high-current applications.

Education

Indian Institute of Technology Kharagpur

Aug 2021 — Present

Doctor of Philosophy in Electrical Engineering

9.85 / 10.00

Indian Institute of Technology Kharagpur

2017 — 2021

Bachelor of Technology in Electrical Engineering

9.14 / 10.00

Narayana Junior College, Hyderabad, Telangana

2015 — 2017

Telangana State Board of Intermediate Education

981 / 1000

Dr. KKR's Gowtham School, Kakinada, Andhra Pradesh

2014 — 2015

Andhra Pradesh Board of Secondary Education

9.70 / 10.00

Technical Skills

Verilog PCB Design FPGA Prototyping

Tools & Platforms

MATLAB Simulink SIMetrix/SIMPLIS LTspice Xilinx ISE Vivado Quartus OrCad Altium

Interests

Control Engineering Power Electronics Digital & Analog Circuits

Portfolio

Projects / Work

01

Fully Digital Peak Current Mode Control of Multiphase Buck Converter

Bachelor's Thesis · 2020 – 2021

Developed custom MATLAB Simulink model for the fixed frequency uniform and event-based sampling peak current mode control techniques of a two-phase buck converter.
Worked on the fast-scale instability and investigated the requirements of the emulated slope of digital ramp compensation for both control techniques to maintain the inner current loop stability.
Derived the large signal model for both control techniques, implemented them in MATLAB, and validated the results with the developed custom MATLAB Simulink model.
Analysed the effect of the phase inductor currents sampling delay on the stability of the system, worked on the improvement of the stability and performance of the system using event-based sampling control technique and validated using small-signal stability analysis.

MATLAB Simulink Power Electronics Digital Control 2020 – 2021

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Content Creation

YouTube Playlists

Visit Channel ↗

As part of the Prime Minister Research Fellowship, I create educational content on YouTube → and conduct weekly doubt-clearing sessions covering development, tools, and technical education to help students better understand the concepts. Browse my playlists below.

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Digital Control in Switched Mode Power Converters and FPGA-based Prototyping

Basic Electrical Circuits

Control and Tuning Methods in Switched Mode Power Converters

Career

Experience

Intern — Power Electronics Engineer

May 2022 — Aug 2022

Qualcomm India Pvt. Ltd.

A fixed-frequency four-phase buck converter under voltage-mode control was designed for automotive applications using a MATLAB Simulink model.
High-side currents are sensed, and a low-bandwidth compensation is added for phase current balancing.
A small-signal-based controller design methodology was developed for both a PID and a Type-III compensator.
Near-time optimal recovery is achieved using large-signal PID tuning, which demonstrates superior transient recovery compared to small-signal tuning methods.

Publication Outcome

T. Golla, S. Kapat, N. Chittaragi, R. A. Setty and S. Sridharan

"Controller Design and Phase Current Balancing for Fast Dynamic Performance in Voltage Mode Controlled Multiphase Buck Converters"

IEEE APEC 2023, Orlando, FL, USA · pp. 2163–2169 · DOI: 10.1109/APEC43580.2023.10131482 ↗

Intern — FPGA & Embedded Systems

May 2020 — July 2020

Xilinx India Technology Services Pvt. Ltd.

Studied the PYNQ-Z2 Board, its architecture, and its design using Xilinx Zynq SoCs.
Explored the Zynq SoC processors, their bus architecture, processing system, and programmable logic.
Gained knowledge about field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), their architectural modules, and the architectural design process.
Studied the interface of Jupyter Lab with the PYNQ board and learned about the ARM AMBA Architecture, the AMBA AXI Protocol, and the AXI architecture.

Research

Current Research

Ph.D. Thesis

Modeling, Analysis and Design of Digital and Non-Linear Control of Multiphase DC-DC Buck Converters for Low-Voltage, High-Current Applications

48V Bus Architecture Multiphase Buck Data Center Power Electronics Digital Control FPGA DC-DC Converters

Supervisor

Dr. Santanu Kapat ↗

Institution

Dept. of Electrical Engineering, IIT Kharagpur

Fellowship

Prime Minister Research Fellow (PMRF)

Research Focus

Designing and developing advanced digital and non-linear control strategies for multiphase DC-DC buck converters, targeting low-voltage, high-current applications such as data centre power delivery and 48V bus architectures.

Methodology

Combining small-signal and large-signal modelling, MATLAB/Simulink simulation, and FPGA-based digital prototyping to analyse stability, improve transient performance, and validate control techniques experimentally.

Research

Relevant Coursework

IIT Kharagpur

B.Tech and Ph.D

2017 — 2022

▸Control Theory

▸Control System Engineering *

▸Programming and Data Structures *

▸Non-Linear Control

▸Power Electronics *

▸Transform Calculus

▸Convex Optimization

▸Embedded Systems *

▸Advanced Power Electronic Converters

▸Analog VLSI

▸Introduction to Basic Electronics *

▸Signals and Networks *

▸Mixed Signal Circuits and SoC

▸Electrical Technology *

▸Computer Architecture

▸Digital Control

▸Analog Signal Processing

▸Analog Electronic Circuits *

▸Digital Signal Processing

▸Digital Electronic Circuits *

▸Probability and Stochastic Processes

* includes Lab work

University of Colorado Boulder

Power Electronics Specialization · Coursera

Jan 2021

▸Introduction to Power Electronics *

▸Magnetics for Power Electronic Converters

▸Converter Control

▸Converter Circuits

* includes LTSpice Simulation

Research

Publications

Transactions & Journals

A Multivariable Approach of Small-Signal and Large-Signal Design Techniques in a Current Mode Series Capacitor Buck Converter for Fast Recovery

2025

IEEE Open Journal of Power Electronics, vol. 6, pp. 983–1001

P. Majumder, T. Golla, S. Kapat, and D. Kastha

DOI: 10.1109/OJPEL.2025.3572696 ↗

This paper presents a multivariable approach combining small-signal and large-signal design techniques for current mode series capacitor buck converters. The proposed framework achieves fast transient recovery while maintaining stability across a wide operating range.

Conferences

Formulating Critical Performance Limits and Power Stage Design in Multiphase Voltage Regulators with Input Voltage and Power FET Technology Scaling

2026

IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, pp. 3455–3462

T. Golla and S. Kapat

DOI: 10.1109/APEC51134.2026.11516807 ↗

This paper formulates critical performance limits for multiphase voltage regulators by analyzing the impact of Power FET technology and input voltage scaling. Design guidelines are derived to optimize efficiency and power density in modern data center applications.

EMI Reduction and Performance Assessment in a Multiphase Buck Converter using Digital Current Control Techniques under Periodic Frequency Modulation

2026

IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, pp. 293–300

T. Golla, S. Kapat and P. T. Krein

DOI: 10.1109/APEC51134.2026.11516887 ↗

This paper investigates EMI reduction in multiphase buck converters through periodic frequency modulation combined with digital current control. Performance metrics including EMI spectrum, transient response, and efficiency are assessed and compared.

Event-based Constant On-Time Digital Current Mode Control Techniques in Series Capacitor Buck Converters for Enhanced Stability and Performance

2024

IEEE Energy Conversion Congress and Exposition (ECCE), Phoenix, AZ, USA, pp. 3798–3803

P. Majumder, T. Golla, S. Kapat and D. Kastha

DOI: 10.1109/ECCE55643.2024.10861638 ↗

This paper proposes event-based constant on-time digital current mode control techniques for series capacitor buck converters. The approach enhances stability and dynamic performance compared to conventional fixed-frequency control methods.

State-Feedback Design Framework for Current-Mode-Controlled Multiphase Boost Converters with Fast Transient Response and Adaptive On-Time

2024

IEEE Transportation Electrification Conference and Expo (ITEC), Chicago, IL, USA, pp. 1–6

T. Golla, S. Kapat and P. T. Krein

DOI: 10.1109/ITEC60657.2024.10598886 ↗

A state-feedback design framework is proposed for current-mode-controlled multiphase boost converters targeting transportation electrification. Adaptive on-time control is integrated to achieve fast transient response across varying load conditions.

Controller Design and Phase Current Balancing for Fast Dynamic Performance in Voltage Mode Controlled Multiphase Buck Converters

2023

IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, pp. 2163–2169

T. Golla, S. Kapat, N. Chittaragi, R. A. Setty and S. Sridharan

DOI: 10.1109/APEC43580.2023.10131482 ↗

This work presents a systematic controller design and phase current balancing methodology for voltage mode controlled multiphase buck converters. The proposed approach delivers fast dynamic performance suitable for mobile and automotive power delivery applications.

Performance and Stability Analysis of a Multiphase Buck Converter under Mixed-Signal Current Mode Control for Mobile and Automotive Applications

2022

IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON), Kharagpur, India, pp. 1–6

R. Talukder, T. Golla, R. S. A, S. Sridharan and S. Kapat

DOI: 10.1109/ONCON56984.2022.10126673 ↗

This paper analyzes performance and stability of a multiphase buck converter under mixed-signal current mode control targeting mobile and automotive applications. Stability boundaries are characterized across operating conditions.

Enhanced Stability with Fast Transient Performance in Digitally Current Mode Controlled Multi-phase Buck Converters using Event-based Sampling

2022

IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, Brussels, Belgium, pp. 1–6

T. Golla, R. Talukder and S. Kapat

DOI: 10.1109/IECON49645.2022.9968810 ↗

This paper introduces event-based sampling in digitally controlled multiphase buck converters to enhance stability and transient performance. Comparative analysis shows improved fast-scale stability over conventional uniform sampling approaches.

Academic

Teaching

PMRF TA Ship

▸ Developed and contributed to educational content in Linear Algebra for students of Hijli College, Kharagpur, as part of the PMRF Teaching Assistantship initiative.
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Served as a Teaching Assistant for the following NPTEL courses, conducting weekly doubt-clearing sessions and supporting student learning:
- ◆ Digital Control in Switched Mode Power Converters and FPGA-based Prototyping Jul 2023 – Oct 2023
- ◆ Network Analysis Jan 2024 – Apr 2024
- ◆ Basic Electrical Circuits Jul 2024 – Oct 2024
- ◆ Network Analysis Jan 2025 – Apr 2025
- ◆ Control and Tuning Methods in Switched Mode Power Converters Jul 2025 – Oct 2025
- ◆ Control Engineering Jan 2026 – Apr 2026

Institute TA Ship

▸ EE69206 · Spring 2025 Embedded Control Systems Lab — under Dr. Bhargav Jha
▸ EE69006 · Spring 2025 Electronic System Development & Prototyping — under Dr. Santanu Kapat
▸ EE29208 · Spring 2024 Electronics Circuit Lab — under Dr. Santanu Kapat
▸ EE69206 · Spring 2024 Embedded Control Systems Lab — under Dr. Santanu Kapat
▸ EE29201 · Autumn 2023 Signals and Network Lab — under Dr. Santanu Kapat
▸ EE11003 · Autumn 2023 Electrical Technology — under Dr. Ashok Kumar Pradhan
▸ EE11003 · Spring 2023 Electrical Technology — under Dr. Souvik Chattopadhyay
▸ EE69206 · Spring 2023 Embedded Control Systems Lab — under Dr. Santanu Kapat
▸ EE11003 · Autumn 2022 Electrical Technology — under Dr. N K Kishore
▸ EE31009 · Autumn 2022 Control Systems — under Dr. Atreyee Kundu & Dr. Santanu Kapat
▸ EE11003 · Spring 2022 Electrical Technology — under Dr. Ashish Ranjan Hota
▸ EE29001 · Autumn 2021 Signals and Networks Lab — under Dr. Debaprasad Kastha

NPTEL TAship

▸ Served as a Teaching Assistant for the NPTEL course Digital Control in Switched Mode Power Converters and FPGA-based Prototyping — supporting Dr. Santanu Kapat in developing the course content and graded assignments (2022).

Academic Recognition

Honours

Awards & Achievements

▸ Received a research grant of Rs. 6,00,000 during 2022–25 as part of the Prime Minister Research Fellowship (PMRF).
▸ Secured All India 46th Rank in JEE Mains B.Arch Examination, 2017.
▸ Secured All India 1857th Rank in JEE Mains B.Tech Examination, 2017.
▸ Secured All India 2545th Rank in JEE Advanced Examination, 2017.
▸ Secured State 241st Rank in Andhra Pradesh EAMCET Examination, 2017.
▸ Secured State 255th Rank in Telangana State EAMCET Examination, 2017.

Competitions & Workshops

Anadigix | Analog Devices

Jan 2020

Kshitij IIT Kharagpur

▸ Secured 3rd position in the Anadigix event conducted by Analog Devices at KSHITIJ Techno-Management Fest, IIT Kharagpur.
▸ Designed and built an audio amplifier using an op-amp followed by an emitter-follower circuit — the op-amp amplifies the small voltage signal generated by an electric microphone.
▸ The emitter-follower acts as a buffer within the feedback loop, providing the current required to drive the loudspeaker and improving overall circuit performance.