I'm trying to simulate an R.Slone Amplifier that uses these two output devices. I've tried all of the models that exist on diyAudio, but have had no luck in getting them to work properly. This query goes out to users of MultiSim specifically. The version that I'm using is MultiSim 9.
The models that have been loaded:
*SRC=2SK1058;MSK1058;MOSFETs N;Power >100V;160V 7A
*SYM=POWMOSN
.SUBCKT 2SK1058 10 20 40
* TERMINALS: D G S
* Hitachi 160 Volt 7 Amp .171 ohm N-Channel Power MOSFET 08-06-1993
M1 1 2 3 3 DMOS L=1U W=1U
RD 100 1 80.4M
RS 30 3 5.28M
RG 20 2 21.4
CGS 2 3 410P
EGD 12 0 2 1 1
VFB 14 0 0
FFB 2 1 VFB 1
CGD 13 14 128P
R1 13 0 1
D1 12 13 DLIM
DDG 15 14 DCGD
R2 12 15 1
D2 15 0 DLIM
DSD 3 100 DSUB
LS 30 40 7.5N
LD 10 100 4N
.MODEL DMOS NMOS (LEVEL=3 THETA=85M VMAX=163K ETA=2.2M VTO=.2 KP=.999)
.MODEL DCGD D (CJO=128P VJ=.6 M=.68)
.MODEL DSUB D (IS=29N N=1.5 RS=61.4M BV=160 CJO=802P VJ=.8 M=.42 TT=252N)
.MODEL DLIM D (IS=100U)
.ENDS
*SRC=2SJ162;MSJ162;MOSFETs P;Power >100V;160V 7A
*SYM=POWMOSP
.SUBCKT 2SJ162 10 20 40
* TERMINALS: D G S
* Hitachi 160 Volt 7 Amp .171 ohm P-Channel Power MOSFET 08-06-1993
M1 1 2 3 3 DMOS L=1U W=1U
RD 100 1 110.4M
RS 30 3 25.28M
RG 20 2 17.4
CGS 2 3 760P
EGD 12 0 1 2 1
VFB 14 0 0
FFB 1 2 VFB 1
CGD 13 14 467P
R1 13 0 1
D1 12 13 DLIM
DDG 15 14 DCGD
R2 12 15 1
D2 15 0 DLIM
DSD 100 3 DSUB
LS 30 40 7.5N
LD 10 100 4N
.MODEL DMOS PMOS (LEVEL=3 THETA=90M VMAX=183K ETA=6.5M VTO=-.2 KP=1.109)
.MODEL DCGD D (CJO=467P VJ=.6 M=.68)
.MODEL DSUB D (IS=29N N=1.5 RS=61.4M BV=160 CJO=900P VJ=.8 M=.42 TT=252N)
.MODEL DLIM D (IS=100U)
.ENDS
When the simulation is running, the output waveform is nonlinear. When I change the Zobel network cap from 150 nF to 20 pF, the output waveform is linear (without a load added). The waveform is only linear when there is no load. I've placed an ammeter between one of the mosfets and its 0.22Ohm resistor and a 10 Ohm load added. The ammeter reads about 580 uA @ 500Hz. There just isn't any current moving through those fets.
The VA stage has been tested quite thoroughly, before the output stage was added. No problems in the VA.
Would be great if you have any suggestions for me to get this thing working.
Cheers.
The models that have been loaded:
*SRC=2SK1058;MSK1058;MOSFETs N;Power >100V;160V 7A
*SYM=POWMOSN
.SUBCKT 2SK1058 10 20 40
* TERMINALS: D G S
* Hitachi 160 Volt 7 Amp .171 ohm N-Channel Power MOSFET 08-06-1993
M1 1 2 3 3 DMOS L=1U W=1U
RD 100 1 80.4M
RS 30 3 5.28M
RG 20 2 21.4
CGS 2 3 410P
EGD 12 0 2 1 1
VFB 14 0 0
FFB 2 1 VFB 1
CGD 13 14 128P
R1 13 0 1
D1 12 13 DLIM
DDG 15 14 DCGD
R2 12 15 1
D2 15 0 DLIM
DSD 3 100 DSUB
LS 30 40 7.5N
LD 10 100 4N
.MODEL DMOS NMOS (LEVEL=3 THETA=85M VMAX=163K ETA=2.2M VTO=.2 KP=.999)
.MODEL DCGD D (CJO=128P VJ=.6 M=.68)
.MODEL DSUB D (IS=29N N=1.5 RS=61.4M BV=160 CJO=802P VJ=.8 M=.42 TT=252N)
.MODEL DLIM D (IS=100U)
.ENDS
*SRC=2SJ162;MSJ162;MOSFETs P;Power >100V;160V 7A
*SYM=POWMOSP
.SUBCKT 2SJ162 10 20 40
* TERMINALS: D G S
* Hitachi 160 Volt 7 Amp .171 ohm P-Channel Power MOSFET 08-06-1993
M1 1 2 3 3 DMOS L=1U W=1U
RD 100 1 110.4M
RS 30 3 25.28M
RG 20 2 17.4
CGS 2 3 760P
EGD 12 0 1 2 1
VFB 14 0 0
FFB 1 2 VFB 1
CGD 13 14 467P
R1 13 0 1
D1 12 13 DLIM
DDG 15 14 DCGD
R2 12 15 1
D2 15 0 DLIM
DSD 100 3 DSUB
LS 30 40 7.5N
LD 10 100 4N
.MODEL DMOS PMOS (LEVEL=3 THETA=90M VMAX=183K ETA=6.5M VTO=-.2 KP=1.109)
.MODEL DCGD D (CJO=467P VJ=.6 M=.68)
.MODEL DSUB D (IS=29N N=1.5 RS=61.4M BV=160 CJO=900P VJ=.8 M=.42 TT=252N)
.MODEL DLIM D (IS=100U)
.ENDS
When the simulation is running, the output waveform is nonlinear. When I change the Zobel network cap from 150 nF to 20 pF, the output waveform is linear (without a load added). The waveform is only linear when there is no load. I've placed an ammeter between one of the mosfets and its 0.22Ohm resistor and a 10 Ohm load added. The ammeter reads about 580 uA @ 500Hz. There just isn't any current moving through those fets.
The VA stage has been tested quite thoroughly, before the output stage was added. No problems in the VA.
Would be great if you have any suggestions for me to get this thing working.
Cheers.