Hints, Tips and Solutions

Q: How can I get a CV curve of a MOSFET? And how can I get the current on all terminals?

A: There are two methods to get the CV curve of MOSFET, Small Signal analysis and Large Signal analysis.

From the charge conservation, the sum of charge in the device must meet the charge neutrality relationship given by:

Qg + Qd + Qs + Qsub = 0

so the Capacitance should be

Cij = dQi/dVij i ≠ j,i j=G,D,S,SUB

Cij = -dQi/dVij i=j

Download Simulation Standard