SANTA CLARA, Calif. – ROHM Semiconductor USA in Santa Clara, Calif., is introducing the PSR350 12-Watt-rated metal plate shunt resistor for high-power industrial and automotive applications.
The PSR350 uses ROHM's vertically integrated production system with material and process optimization to achieve a thickness of 0.03 inches -- about half that of conventional power electronics products in the 12-Watt class.
The same technology helps ROHM develop the 0.25-inch 15-Watt-rated PSR330 shunt resistor. This decreases size by about 65 percent compared to conventional products in the same class to reduce mounting area in a wide range of high-power applications.
Shunt resistors have been used in power modules for industrial equipment for some time. Similarly in the automotive sector, the number of thin double-sided cooled power modules adopted in the main inverters of xEVs is rising, demanding incorporate power device chips (IGBTs and SiC MOSFETs) and shunt resistors to decrease housing size.
Conventional metal plate shunt resistors reduce the cooling efficiency of power devices due to their relatively high profile. But decreasing height has proven difficult, as it is necessary to prototype and evaluate a variety of welding materials in different configurations.
For more information contact ROHM Semiconductor USA online at www.rohm.com.
