Library file IFX_CoolSiC_Gen2_650V.lib from Infineon : CoolSiC ™ MOSFET 650 V G2 Spice
Infineon models are generally constructed with a number of mathematical equations using dependent sources. Qspice offers two solvers: Qspice64.exe and Qspice80.exe. By default, Qspice is set up to use Qspice64.exe, which employs 64-bit double precision math. However, in certain cases, such as when dealing with complex formulas, the use of 80-bit math is necessary, requiring a switch to Qspice80.exe.
Solvers in QSPICE - QSPICE - Qorvo Tech Forum
For Infineon models, it seems 80-bit math can save you.
Dual-pulse test - QSPICE - Qorvo Tech Forum
Two methods to utilize Qspice80.exe as the solver.
- In schematic, add :
.option fastmath=0 - OR, Edit > Preferences > Disable “Fast (less accurate) math”