T37.2 - Vertical Shunt Resistor for Double-Sided Cooling Power Modules

Thursday, March 26, 2026

10:40 AM - 11:00 AM CT

Location: 217A

Technical Lecture Presenter(s)

Sihoon Choi, PhD (he/him/his)

Nagoya University

Presentation Paper

Co-Author(s)

Thiyu S. Warnakulasooriya, MEng (he/him/his)

Nagoya University
Jiyoon Choi, MA (she/her/hers)

Nagoya University
JI

Jun Imaoka

Nagoya University
MY

Masayoshi Yamamoto

Institute of Materials and Systems for Sustainability, Nagoya University
KN

Keishi Nakamura

KOA Corporation
ST

Susumu Toyoda

KOA Corporation
KS

Koji Shigesawa

KOA Corporation

This study proposes a novel vertical shunt resistor and its packaging into double-sided cooling power modules. The proposed shunt resistor has significantly low thermal resistance compared to lateral counterparts by utilizing large cooling surface and double-sided cooling. The proposed resistor is also able to use a high-resistive NiCr-based resistor alloy due to its configuration, not Mn-Cu-based alloys which are unstable in high temperature and has high coefficient of thermal expansion. Manufacturing process of the power module and its manufacturability is explained. Two types of shunt-resistor-integrated power modules were prototyped, and guidelines are provided to reduce the variation in effective resistance and to achieve a low temperature coefficient of resistance.