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In Reply to: RE: IXYS 10M45 High Voltage CCS SPICE? posted by jorisdallaire on October 25, 2014 at 19:14:35
I can make it to work this way:
Use the nmos symbol, go to advanced setting, set the "prefix" parameter to "X" and the "spicemodel" parameter to "10M45S" (without quotes). Of course the model goes into and .inc directive or in a included file.Results are different than for the 10M90S - The 10M45 model gives way too high current when Rset is lower than about 200 ohms, so I'd use the 10M90 model. FWIW my 10M90 sims corresponded to measurements made on an actual circuit that was using the 10M45S.
Edits: 10/25/14 10/25/14Follow Ups:
Sorry that the model did not work... I also neglected to include the comments that came with the model which may provide some clues about its behavior.
******************************************************
* Model generated on 27 Apr 2010
* Model format: LTspice
* IXCP10M45 macro model
* External node designations
* Node A -> anode (1)
* Node G -> gate (2)
* Node K -> cathode (3)
*
* G1, R1 & C1 model an idealized op-amp. Aol controls
* its open loop gain. Based on LT opamp.lib.
* The op-amp controls a MOSFET M1, to make the Voltage
* drop across a resistor between G & K equal a Voltage
* reference. The Vref source is made up by G2 & R2.
* It is altered by a fraction of V(A,K) to achieve a
* dynamic resistance of 160k where bias resistor = 300R,
* giving nominally 10mA of Ik.
******************************************************
.subckt 10M45S A G K
+params: Aol=100 GBW=10meg ref=3
M1 A 5 K K MOSFET1
* V1 4 G 3
G1 G 5 4 K {Aol}
R1 5 G 1
C1 5 G {Aol/GBW/6.28318530717959}
G2 G 4 value={(ref+V(A,K)/500)}
R2 4 G 1
.model MOSFET1 VDMOS(Rg=2 Vto=4.85 Rd=1m Rs=1m Rb=1.2m Kp=33
+lambda=0.01 Cgs=1.4n Cgdmin=48p Cgdmax=1.9n Cjo=4n Is=2n Vds=450
+Ron=0.92 Qg=48n)
.ends
I modeled the circuit using a pair of DN2450, but I've saved this info for future reference. Thanks!
--------------------------
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