DTMES 2022 - Presentation

Multiphysics and System Co-Design of Integrated Current IC Sensors: Simulation and Measurement Correlation
Rajen Murugan, IEEE EPS Dallas Chapter Chair; IEEE Dallas Section Vice-Chair

Abstract - Current sensors are ubiquitous these days. A current sensor is a device that senses and detects electric current and generates a proportional signal. Application areas range from industrial, automotive, consumer electronics, medical, and telecommunication. There are different methods to sense and measure current. The optimal choice is generally a compromise between accuracy, type of measurements - DC and/or AC, performance requirement, application at hand, and cost. The key factors driving the current sensor ICs market are high integration, low form-factor, reduced power consumption, and cost-effective build of materials (BOM). While beneficial, integration leads to multiple integrated circuits (IC) design complexities that compromise performance. The electromagnetic interactions of the system (viz. Silicon, Package, and PCB) and the need to concurrently consider multiphysics are co-design challenges that need to be addressed upfront. To that end, the need for robust modeling and analysis design methodology is critical to assessing desired performance early in the design phase while keeping costs down. This presentation reviews the development and implementation of a multiphysics system co-design methodology for designing high-performance, cost-effective current sensors. The methodology is validated against silicon laboratory measurements made on two IC current sensor types - a precision shunt resistor sensor integrated into a voltage-output current-sense amplifier and on a high-precision, high-voltage (600V) Hall-Effect current sensor. Design guidelines and recommendations for current sensors are also provided..

Dr. Rajen Murugan specializes in developing complex analog and mixed-signal IC packaging multiphysics system co-design modeling and analysis methodologies. He is a Distinguished Member of Technical Staff (DMTS) with Texas Instruments, Inc. He currently has 20 patents (24 pending) and has published over 50 papers in IEEE peer-reviewed journals and conferences. Dr. Murugan holds a Ph.D. in Applied Electromagnetics. He is currently an Affiliate Assistant Professor with the University of Washington, a Senior Member of IEEE, Chair of the IEEE EPS Dallas Chapter, and Co-Chair of the IEEE Dallas Section (R5)..