서강대학교 전자공학과

Seongbo Park, Integrated M.S.-Ph.D. (Advisor: Prof. Gilcho Ahn), Paper Accepted to TCAS-I 2026

Park Sung-Bo, an integrated M.S./Ph.D. student in the Mixed-Signal Circuit Design Laboratory, Department of Electronic Engineering, under the supervision of Prof. Kil-Choo Ahn, has had a paper accepted for publication in IEEE Transactions on Circuits and Systems I: Regular Papers (TCAS-I), a prestigious international journal in the field of analog circuit design.

IEEE Transactions on Circuits and Systems I: Regular Papers (TCAS-I) is an international journal covering the theory, design, and implementation of analog, digital, and mixed-signal circuits and systems. It publishes research results in a broad range of areas, including integrated circuit design, data converters, sensor interfaces, signal-processing circuits, and various circuit- and system-level applications.

The paper, entitled “A ±50-A Shunt-Based Current Sensor With ±0.2% Gain Error From −40 °C to 125 °C,” proposes a temperature-compensation technique based on PTAT (Proportional-to-Absolute-Temperature) and tunable CTAT (Complementary-to- Absolute-Temperature) characteristics to compensate for the temperature-dependent resistance variation of a PCB-trace shunt resistor. The proposed current sensor operates without complex individual temperature calibration by using a single batch calibration together with a one-point gain trim at room temperature. It achieves a gain error within ±0.2% over a temperature range of −40 °C to 125 °C and a current range of ±50 A. In addition, a low-power ΔΣ ADC directly digitizes the shunt voltage, enabling the implementation of an integrated current-sensing system for accurate current measurement.