Design of a Novel Voltage Regulator Module (VRM) with Fast Transient Response
In this paper, a new circuit of power supply for microprocessors, named as switched-inductor multiphase voltage regulator module (VRM), is presented and designed. One of the main requirements of VRMs for todays microprocessors is fast transient response. The other issues associated with conventional VRMs are small duty ratio, large ripple and low efficiency. A solution to the limitations of these VRMs is presented in the form of a new VRM topology which is obtained from the multiphase interleaving VRM by the addition of a capacitor and introduction of a second inductor in each phase. The proposed VRM has the advantage of extending the duty ratio, decreasing the peak-to-peak ripple and a very fast load transient response. Both theoretical and simulation results shows that the performance of the proposed VRM is better than the conventional VRMs. The proposed VRM operates with double duty ratio and has fast transient response, small ripple and reduced voltage stress on switches, which improves efficiency.
Keywords: VRM, Transient Response, Duty Ratio, Voltage Stress, Multi-phase
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ABOUT THE AUTHORS
Ajmal Farooq
Mr. Ajmal Farooq received his Bachelors and Masters degrees both in Electrical Engineering from the University of Engineering & Technology, Peshawar, Pakistan in year 2007 and 2010 respectively. Before he joined COMSATS Institute of Information Technology, Attock Pakistan as a Lecturer, he had been working at Bluezone Electromechanical LLC, Dubai, U.A.E as an Electrical Engineer. His research interests lies in the area of Power Electronics, HVDC Systems and Renewable Energy Systems.
Farman Ullah
Mr. Farman Ullah received his MSc in Computer Engineering from Center of Advanced Studies in Engineering, Islamabad Pakistan and his BSc in Computer Systems Engineering from Department of Computer Systems Engineering at University of Engineering and Technology Peshawar, Pakistan in 2011 & 2006 respectively. Before he joined COMSATS Institute of Information Technology, Attock Pakistan as a Lecturer, he had been working at Advanced Engineering and Research Organization, Pakistan as Telemetry Engineer.
Muhammad Saleem
Mr. Muhammad Saleem received his Master degree in Electrical Engineering from the University of Engineering & Technology, Peshawar, Pakistan in year 2010. Currently he is serving at Sarhad University of Science & Information Technology as a Lecturer for the last two years.
Ajmal Farooq
Mr. Ajmal Farooq received his Bachelors and Masters degrees both in Electrical Engineering from the University of Engineering & Technology, Peshawar, Pakistan in year 2007 and 2010 respectively. Before he joined COMSATS Institute of Information Technology, Attock Pakistan as a Lecturer, he had been working at Bluezone Electromechanical LLC, Dubai, U.A.E as an Electrical Engineer. His research interests lies in the area of Power Electronics, HVDC Systems and Renewable Energy Systems.
Farman Ullah
Mr. Farman Ullah received his MSc in Computer Engineering from Center of Advanced Studies in Engineering, Islamabad Pakistan and his BSc in Computer Systems Engineering from Department of Computer Systems Engineering at University of Engineering and Technology Peshawar, Pakistan in 2011 & 2006 respectively. Before he joined COMSATS Institute of Information Technology, Attock Pakistan as a Lecturer, he had been working at Advanced Engineering and Research Organization, Pakistan as Telemetry Engineer.
Muhammad Saleem
Mr. Muhammad Saleem received his Master degree in Electrical Engineering from the University of Engineering & Technology, Peshawar, Pakistan in year 2010. Currently he is serving at Sarhad University of Science & Information Technology as a Lecturer for the last two years.
