Question about importing spice models

[broos72482]

Dear Mr/Mrs,

I've imported the hardware design of the SFH6916 optocoupler. I've found a spice model
(see below) but run into trouble when following the tutorial on simulation.

The problem I ran into is the following:
- I've defined the PRIMITIVE property, THe SPICEMODEL, the SPICEFILE and the SPICEPINS.
- The SPICEPINS seems to be the problem

Error_messages.PNG (19.54 KiB) Viewed 1615 times

I've got the spice model from here:
https://www.vishay.com/product/83687/ta ... tools-ppg/

[David]

Hi,

I don't think that this is a Berkley SPICE model so therefore not supported... But I will check with the Dev guys, thanks.

Regards,
Dave.

[Ettore]

Unfortunately this is a PSPICE Cadence format model which is not Berkley SPICE format supported, as said.
However, in this case it's possible to translate it in PROSPICE primitives (the Proteus SPICE).

To get the translated model and instruction how to use it, go to LIBRARIES AND MODELS->"Library and Model Requests" licensed user's forum: the topic is "SFH6916 model".

[broos72482]

LIBRARIES AND MODELS->"Library and Model Requests" licensed user's forum

Where can i find this forum. What is the url?

[Ettore]

As your status appears as "Professional User" you should see almost all additional forum sections. The link is here, let us know if you can see it. viewtopic.php?t=8378

[broos72482]

Okay i've managed to follow the steps in the LIBRARY AND MODELS forum.
So what I dit was the following and try to attach the MODEL FILE to my SFH6916 model:

• I put the BJT_5MA.MDF in de models directory.

• I've defined a property MODFILE=BJT_5MA.MDF

• I've defined a property REL_CTR=1.

• I've defined a property BF=100

Now the simulation gives the following error messages when stopped:

Error_messages1.png (35.51 KiB) Viewed 1560 times

It seems it doesn't find the correct pins. So my thought was: "Is it possible to connect a subckt to an existing device ?"
In you're example project you can zoom in on the opto-coupler and there is the schematic model of the opto-coupler defined and the pins .
But I don't now how to do that with my existing model, since there is no child sheet in my existing device.

[broos72482]

Error_messages2.png (18.37 KiB) Viewed 1560 times

[Ettore]

Could you please post your project test file ?
I'm not exactly sure what are you doing but It seems you're drawing a single part with 4 couplers where I was expecting you were making a Multi-Element Homogeneous Device with four identical sections as for example like LM324. The BJT_5MA.MDF model is for only one section, though.

[broos72482]

In the attachment i've included the testproject a 5Vdc to 24Vdc 0,5A driver circuit.

[Ettore]

Ok, here it is your version fixed. Type CTRL+C when your mouse pointer is over U1 to see how you should have done that to make it to work.

Test1a.pdsprj

(18.72 KiB) Downloaded 1072 times

However I think that a more professional method (and much better adopted practice) is what we call Multi-Element Homogeneous Device. You see that approach in SSH6916.pdsprj file. The SSH6916_test.pdsprj is the your test project with Multi-Element Homogeneous Device approach. In order to work both TIP117.LIB and BJT_5MA.MDF models must be in the same directory of those projects.

SFH6916.pdsprj

(6.72 KiB) Downloaded 1070 times

SFH6916_test.pdsprj

(8 KiB) Downloaded 1074 times

[broos72482]

Thanks very much.