Applying EMI mitigation techniques in battery management systems (BMS) in electric vehicles can help engineers not only easily meet CISPR 25 Class 5 EMI standards but also increase power density, and lower BOM count and overall system cost. This video demonstrates how the UCC12051-Q1 DC/DC bias supply module can help provide a power-dense solution with excellent EMI performance through customized integrated transformer, switching frequency dithering and added ceramic ycap, and provides conducted and radiated EMI test results.