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Temperature Pin on PSPICE models

P

PaulCsouls

Jan 1, 1970
0
Some of the newer Orcad 9.1 PSPICE models have a temperature pin in
them. How do you make a part for MicroSim 8.0 that ties this pin to
the temperature?

Thanks

Paul C
 
J

Jim Thompson

Jan 1, 1970
0
Some of the newer Orcad 9.1 PSPICE models have a temperature pin in
them. How do you make a part for MicroSim 8.0 that ties this pin to
the temperature?

Thanks

Paul C

It's set by model parameter T_REL_GLOBAL or T_REL_LOCAL.

I don't know if v8 can do that. (I have v10.5)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

Anyone can be rude, but it takes a Democrat to be a real dirtbag.
 
P

PaulCsouls

Jan 1, 1970
0
It's set by model parameter T_REL_GLOBAL or T_REL_LOCAL.

I don't know if v8 can do that. (I have v10.5)

...Jim Thompson


I don't understand. If you look at the first couple of lines of the
NDS9410a model, there's an extra pin. Pin 50 VTEMP. When I make a
symbol I have to include this pin. The model works but I need to
drive this pin with a 27Volt source. I'd rather have this pin be
driven by the normal .TEMP parameter. Is there a way to attach a pin
to a parameter?
*NDS9410A at Temp. Electrical Model
*-------------------------------------
.SUBCKT NDS9410A 20 10 30 50
*20=DRAIN 10=GATE 30=SOURCE 50=VTEMP

Thanks

Paul C
 
J

Jim Thompson

Jan 1, 1970
0
I don't understand. If you look at the first couple of lines of the
NDS9410a model, there's an extra pin. Pin 50 VTEMP. When I make a
symbol I have to include this pin. The model works but I need to
drive this pin with a 27Volt source. I'd rather have this pin be
driven by the normal .TEMP parameter. Is there a way to attach a pin
to a parameter?


Thanks

Paul C

Aha! Someone has hokeyed up a model so that an applied voltage is
local temperature.

Are you wanting to do a temperature sweep, or some other analysis, but
set temperature?

If you do a behavior VCVS with expression = {TEMP}, you'll get a
voltage equal to the temperature.

(I'm pretty sure that works in v8.)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |

Anyone can be rude, but it takes a Democrat to be a real dirtbag.
 
P

PaulCsouls

Jan 1, 1970
0
Aha! Someone has hokeyed up a model so that an applied voltage is
local temperature.

Are you wanting to do a temperature sweep, or some other analysis, but
set temperature?

If you do a behavior VCVS with expression = {TEMP}, you'll get a
voltage equal to the temperature.

(I'm pretty sure that works in v8.)

...Jim Thompson

Yes, I'm trying to do a nested temperature sweep on a whole circuit.
Fairchild seems to be adding these weird VTEMP pins in their SPICE
models. I'll try the VCVS = {TEMP} trick. I also try making the pin
hidden and sticking {TEMP} into the IPIN.

Thanks

Paul C
 
P

PaulCsouls

Jan 1, 1970
0
Aha! Someone has hokeyed up a model so that an applied voltage is
local temperature.

Are you wanting to do a temperature sweep, or some other analysis, but
set temperature?

If you do a behavior VCVS with expression = {TEMP}, you'll get a
voltage equal to the temperature.

(I'm pretty sure that works in v8.)

...Jim Thompson

Fairchild has an explanation on how to use these models.

http://www.fairchildsemi.com/models_static/spicemanual.html

Paul C
 
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