I got this model for a mosfet, FDB390N15A https://www.dropbox.com/scl/fi/ko6yvs1jo1j4svunwrmtc/FDB390N15A.lib?rlkey=o012wl2xqh3vjyoz7i7vbx59t&dl=0 And want to run it in LT Spice. I named my mosfet FDB390N15A and I did .lib FDB390N15A.lib and .inc and .mod too but it complains that it "can't find the definition of model FDB390N15A". I never really understood how to connect LT Spice to imported models. The library is a .subckt. Any ideas? I've been picking a standard part from the library that seems sorta close, but I'd rather run the real thing.
LT Spice question
Started by ●July 23, 2023
Reply by ●July 23, 20232023-07-23
John Larkin <jlarkin@highlandSNIPMEtechnology.com> wrote:> > I got this model for a mosfet, FDB390N15A > > https://www.dropbox.com/scl/fi/ko6yvs1jo1j4svunwrmtc/FDB390N15A.lib?rlkey=o012wl2xqh3vjyoz7i7vbx59t&dl=0 > > And want to run it in LT Spice. > > I named my mosfet FDB390N15A > > and I did > > .lib FDB390N15A.lib > and .inc and .mod too > > but it complains that it "can't find the definition of model > FDB390N15A". > > I never really understood how to connect LT Spice to imported models. > The library is a .subckt. > > Any ideas? > > I've been picking a standard part from the library that seems sorta > close, but I'd rather run the real thing. > > > >Did you do the subcircuit dance? You know, change the whatzis from M to X? -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics
Reply by ●July 23, 20232023-07-23
On Mon, 24 Jul 2023 00:12:32 -0000 (UTC), Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> wrote:>John Larkin <jlarkin@highlandSNIPMEtechnology.com> wrote: >> >> I got this model for a mosfet, FDB390N15A >> >> https://www.dropbox.com/scl/fi/ko6yvs1jo1j4svunwrmtc/FDB390N15A.lib?rlkey=o012wl2xqh3vjyoz7i7vbx59t&dl=0 >> >> And want to run it in LT Spice. >> >> I named my mosfet FDB390N15A >> >> and I did >> >> .lib FDB390N15A.lib >> and .inc and .mod too >> >> but it complains that it "can't find the definition of model >> FDB390N15A". >> >> I never really understood how to connect LT Spice to imported models. >> The library is a .subckt. >> >> Any ideas? >> >> I've been picking a standard part from the library that seems sorta >> close, but I'd rather run the real thing. >> >> >> >> > >Did you do the subcircuit dance? > >You know, change the whatzis from M to X?Uh, could you please be less specific?
Reply by ●July 23, 20232023-07-23
On 2023-07-23 20:32, John Larkin wrote:> On Mon, 24 Jul 2023 00:12:32 -0000 (UTC), Phil Hobbs > <pcdhSpamMeSenseless@electrooptical.net> wrote: > >> John Larkin <jlarkin@highlandSNIPMEtechnology.com> wrote: >>> >>> I got this model for a mosfet, FDB390N15A >>> >>> https://www.dropbox.com/scl/fi/ko6yvs1jo1j4svunwrmtc/FDB390N15A.lib?rlkey=o012wl2xqh3vjyoz7i7vbx59t&dl=0 >>> >>> And want to run it in LT Spice. >>> >>> I named my mosfet FDB390N15A >>> >>> and I did >>> >>> .lib FDB390N15A.lib >>> and .inc and .mod too >>> >>> but it complains that it "can't find the definition of model >>> FDB390N15A". >>> >>> I never really understood how to connect LT Spice to imported models. >>> The library is a .subckt. >>> >>> Any ideas? >>> >>> I've been picking a standard part from the library that seems sorta >>> close, but I'd rather run the real thing. >> >> Did you do the subcircuit dance? >> >> You know, change the whatzis from M to X? > > Uh, could you please be less specific?Place NMOS device. Ctl-click (it's ctl-Rclick in Wine, but ISTR it's ctl-Lclick in Windows) Component Attribute Editor comes up Select "InstName", change MN to XN. This tells LTspice to expect a .SUBCKT instead of a .MODEL. Select 'Value', change 'NMOS' to the correct subcircuit name, hit 'Okay'. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
