C-V curve matters for quiet power electronics
Key Takeaways: Abrupt change of Cgd causes uncontrolled high dV/dt during switching transients results in oscillations and generates EMI. Abrupt change of Cgd with Vds has adverse effect on EMI/EMC. Device with smoother C-V curve performs better. Abrupt change of capacitive ratio Cgd/Cgs with Vds also adversely impacts EMI/EMC, smoother is better. A paper published