Circuit: * Z:\home\maximilian\UppSense\ltspice\current_source_max\driver_option1.asc Instance "m:u1:6": Length shorter than recommended for a level 2 MOSFET. Instance "m:u1:5": Length shorter than recommended for a level 2 MOSFET. Instance "m:u1:4": Length shorter than recommended for a level 2 MOSFET. Instance "m:u1:3": Length shorter than recommended for a level 2 MOSFET. Instance "m:u1:2": Length shorter than recommended for a level 2 MOSFET. Instance "m:u1:1": Length shorter than recommended for a level 2 MOSFET. Direct Newton iteration failed to find .op point. (Use ".option noopiter" to skip.) Starting Gmin stepping Gmin = 10 Gmin = 1.07374 Gmin = 0.115292 Gmin = 0.0123794 Gmin = 0.00132923 vernier = 0.5 vernier = 0.25 vernier = 0.125 vernier = 0.0625 Gmin = 0.00100083 vernier = 0.03125 vernier = 0.015625 vernier = 0.0078125 vernier = 0.00390625 vernier = 0.00195313 Gmin = 0.00100083 vernier = 0.000976563 vernier = 0.000488281 Gmin = 0 Gmin stepping failed Starting source stepping with srcstepmethod=0 Source Step = 3.0303% Source Step = 33.3333% Source Step = 51.5152% Source Step = 59.0909% Source Step = 66.6667% Source Step = 74.2424% Source Step = 81.8182% vernier = 0.375 Source Step = 90.5303% Source stepping succeeded in finding the operating point. .step rjump=1000 .step rjump=10000 .step rjump=50000 Date: Wed Jun 14 12:51:56 2017 Total elapsed time: 0.755 seconds. tnom = 27 temp = 27 method = modified trap totiter = 6187 traniter = 2084 tranpoints = 1042 accept = 1042 rejected = 0 matrix size = 56 fillins = 60 solver = Normal Matrix Compiler1: 5.52 KB object code size 2.0/0.8/[0.5] Matrix Compiler2: 5.89 KB object code size 1.1/1.6/[0.8]