PhD Proposal by Prahalad Murali

Event Details
  • Date/Time:
    • Monday June 13, 2022
      10:00 am - 12:00 pm
  • Location: Pettit Microelectronics Building - 102B
  • Phone:
  • URL: Zoom
  • Email:
  • Fee(s):
    N/A
  • Extras:
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Summaries

Summary Sentence: Materials and Processes for High Conversion Ratio High Efficiency Package Embedded Inductors for Integrated Voltage Regulators

Full Summary: No summary paragraph submitted.

THE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING  

   

GEORGIA INSTITUTE OF TECHNOLOGY    

  

Under the provisions of the regulations for the degree 
  

DOCTOR OF PHILOSOPHY 
  

on Monday, June 13, 2022 

10:00 AM 


in Pettit Microelectronics Building - 102B

and via

Zoom Videoconferencing

https://gatech.zoom.us/j/97187855358?pwd=eWNmY1NCQ1V3cTRQKytXeHo5cTArQT09

Meeting ID: 971 8785 5358

Passcode: 310123

  

will be held the 

  

DISSERTATION PROPOSAL DEFENSE 
 
for 

  

Prahalad Murali

  

"Materials and Processes for High Conversion Ratio High Efficiency Package Embedded Inductors for Integrated Voltage Regulators" 

  

Committee Members: 

  

Prof. Madhavan Swaminathan, Co-advisor, ECE/MSE 

Prof. Mark D. Losego, Co-advisor, MSE

Himani Sharma, PhD, MSE

Mohanalingam Kathaperumal, PhD, ECE 

Prof. Maryam Saeedifard, ECE 

  

Abstract:

 

With data centers taking the center stage of most of our daily computing needs, it is necessary to take a close look at how we can improve their efficiency. According to DW and IEA statistics, data centres take up anywhere between 200-250 TWh of electricity a year which is more than some of the countries. Power conversion and cooling take up a major chunk of the electricity needs of the data center. The focus of this research is going to be on the inductors that form a part of the buck converter circuit which converts high input DC voltages to low DC voltages (1 V) required to power the System-on Chip (SoC). The losses in a buck converter circuit stem from the conduction losses of the MOSFET and inductor, the inductor’s AC magnetic losses and the MOSFET dynamic or switching loss. The inductor being part of a bigger system must be able to match the frequency at which the MOSFET’s maximum efficiency is at. For integrated voltage regulators, the inductors must have a small footprint while maintaining the high inductance density, high current density, and low losses (DC and AC). To improve the inductor efficiency, the magnetic core and the design must be taken into consideration. High permeability and low loss materials are hard to find. Also, novel inductor designs with currently available materials can’t meet the target metrics. It is also important to be able to fabricate these designs in a manner that they can be integrated into the package substrate.

 

Previous work has shown that flake based metal polymer composites achieve high permeability thereby high inductance density at the cost of low current handling whereas low permeability materials achieve high current densities with low inductances. The work proposes to achieve the following objectives:

 

1. Study the effect of a sphere-flake oxide coated metal fillers in a metal polymer composite magnetic core on the power loss metric (Racx)

2. Fabrication and characterization of novel inductor designs using a semi-additive patterning (SAP) process

3. Design and demonstration of glass substrate embedded inductors

Additional Information

In Campus Calendar
No
Groups

Graduate Studies

Invited Audience
Faculty/Staff, Public, Undergraduate students
Categories
Other/Miscellaneous
Keywords
Phd Defense
Status
  • Created By: Tatianna Richardson
  • Workflow Status: Draft
  • Created On: Jun 2, 2022 - 2:38pm
  • Last Updated: Jun 2, 2022 - 2:38pm