xschem/xschem_library/examples/classD_amp.sch

v {xschem version=3.0.0 file_version=1.2 }
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K {}
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B 2 1060 -660 2040 -350 {flags=graph
y1=-94.5342
y2=77.5746
ypos1=2.19058
ypos2=36.4765
divy=5
subdivy=1
unity=1
x1=0.000421769
x2=0.0019873
divx=5
subdivx=1
node="out
out_lpf
\\"Expected;in 5 - 9 *\\""
color="7 8 6"
dataset=0
unitx=u
digital=0}
B 2 1060 -340 2040 -150 {flags=graph
y1=0
y2=12
ypos1=0.540742
ypos2=10.5249
divy=5
subdivy=1
unity=1
x1=0.000421769
x2=0.0019873
divx=5
subdivx=1


dataset=0
unitx=u
digital=1
color="7 4 4 7 6 4"
node="\\"out;out 8 / 5 +\\"
\\"Gate Up;gu out -\\"
\\"Gate Down;gd vnn -\\"
driveu
drived
ref"}
B 2 1060 -990 2040 -680 {flags=graph
y1=0.0016
y2=10
ypos1=-3.90706
ypos2=14.7089
divy=5
subdivy=1
unity=1
x1=0.000421769
x2=0.0019873
divx=5
subdivx=1


dataset=0
unitx=u
digital=0

color="6 8 7"
node="refu
refd
in"}
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B 2 1060 -1310 2040 -1000 {flags=graph
y1=-21.5085
y2=139.735
ypos1=2.19058
ypos2=36.4765
divy=5
subdivy=1
unity=1
x1=0.000421769
x2=0.0019873
divx=5
subdivx=1


dataset=0
unitx=u
digital=0
color="4 7 8"
node="\\"xm1 power;vpp out - i(vu) * avg()\\"
\\"xm2 power;out vnn - i(vd) * avg()\\"
\\"Load power;out_lpf 2 ** 8 / avg()\\""}
T {PWM Modulator} 480 -610 0 0 0.6 0.6 {}
T {Driver} 230 -930 0 0 0.6 0.6 {}
T {LP
Filter} 700 -1040 0 0 0.6 0.6 {}
T {Load} 860 -1010 0 0 0.6 0.6 {}
T {VREF} 65 -765 0 0 0.2 0.2 {layer=4}
T {10} 5 -845 0 0 0.2 0.2 {}
T {VREF} 65 -1085 0 0 0.2 0.2 {layer=4}
T {10} 5 -1165 0 0 0.2 0.2 {}
T {DRIVE} 125 -765 0 0 0.2 0.2 {}
T {DRIVE} 125 -1085 0 0 0.2 0.2 {}
T {Class D amplifier } 430 -1380 0 0 1 1 {}
N 460 -1020 460 -1000 {lab=#net1}
N 460 -920 460 -900 {lab=OUT}
N 460 -840 460 -800 {lab=#net2}
N 460 -1060 460 -1020 {lab=#net1}
N 460 -700 460 -640 {lab=VNN}
N 460 -940 460 -920 {lab=OUT}
N 460 -1160 460 -1120 { lab=VPP}
N 570 -920 680 -920 {
lab=OUT}
N 220 -1020 460 -1020 {
lab=#net1}
N 340 -1090 420 -1090 {
lab=GU_I}
N 220 -700 460 -700 {
lab=VNN}
N 340 -770 420 -770 {
lab=GD_I}
N 220 -770 220 -760 {
lab=GD}
N 610 -370 710 -370 {
lab=DRIVED}
N 220 -1090 220 -1080 {
lab=GU}
N 70 -510 70 -490 {
lab=VSS}
N 70 -590 70 -570 {
lab=VPP}
N 190 -510 190 -490 {
lab=VSS}
N 190 -590 190 -570 {
lab=VNN}
N 70 -370 70 -350 {
lab=0}
N 70 -450 70 -430 {
lab=VSS}
N 220 -1090 280 -1090 {
lab=GU}
N 220 -770 280 -770 {
lab=GD}
N 440 -150 440 -130 {
lab=VSS}
N 260 -150 260 -130 {
lab=VSS}
N 780 -920 780 -890 {
lab=OUT_LPF}
N 740 -920 780 -920 {
lab=OUT_LPF}
N 460 -740 460 -700 {lab=VNN}
N 460 -920 570 -920 {
lab=OUT}
N 780 -830 780 -810 {
lab=VSS}
N 900 -830 900 -810 {
lab=VSS}
N 900 -920 900 -890 {
lab=OUT_LPF}
N 900 -920 940 -920 {
lab=OUT_LPF}
N 780 -920 900 -920 {
lab=OUT_LPF}
N 260 -400 490 -400 {
lab=IN}
N 260 -400 260 -210 {
lab=IN}
N 610 -520 710 -520 {
lab=DRIVEU}
N 440 -490 490 -490 {
lab=REFU}
N 440 -340 490 -340 {
lab=REFD}
N 260 -550 490 -550 {
lab=IN}
N 260 -550 260 -400 {
lab=IN}
N 440 -230 440 -210 {
lab=REF}
C {nmos3.sym} 440 -770 0 0 {name=xm2 model=irf540 m=1
program=evince
url="https://www.vishay.com/docs/91021/irf540.pdf"
net_name=true

device_model=".SUBCKT irf540 1 2 3
M1 9 7 8 8 MM L=100u W=100u
* Default values used in MM:
* The voltage-dependent capacitances are
* not included. Other default values are:
* RS=0 RD=0 LD=0 CBD=0 CBS=0 CGBO=0
.MODEL MM NMOS LEVEL=1 IS=1e-32
+VTO=3.56362 LAMBDA=0.00291031 KP=25.0081
+CGSO=1.60584e-05 CGDO=4.25919e-07
RS 8 3 0.0317085
D1 3 1 MD
.MODEL MD D IS=1.02194e-10 RS=0.00968022 N=1.21527 BV=100
+IBV=0.00025 EG=1.2 XTI=3.03885 TT=1e-07
+CJO=1.81859e-09 VJ=1.1279 M=0.449161 FC=0.5
RDS 3 1 4e+06
RD 9 1 0.0135649
RG 2 7 5.11362
D2 4 5 MD1
* Default values used in MD1:
* RS=0 EG=1.11 XTI=3.0 TT=0
* BV=infinite IBV=1mA
.MODEL MD1 D IS=1e-32 N=50
+CJO=2.49697e-09 VJ=0.5 M=0.9 FC=1e-08
D3 0 5 MD2
* Default values used in MD2:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* BV=infinite IBV=1mA
.MODEL MD2 D IS=1e-10 N=0.4 RS=3e-06
RL 5 10 1
FI2 7 9 VFI2 -1
VFI2 4 0 0
EV16 10 0 9 7 1
CAP 11 10 2.49697e-09
FI1 7 9 VFI1 -1
VFI1 11 6 0
RCAP 6 10 1
D4 0 6 MD3
* Default values used in MD3:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* RS=0 BV=infinite IBV=1mA
.MODEL MD3 D IS=1e-10 N=0.4
.ENDS
"}
C {nmos3.sym} 440 -1090 0 0 {name=xm1 model=irf540 m=1
program=evince
url="https://www.vishay.com/docs/91021/irf540.pdf"
net_name=true

device_model=".SUBCKT irf540 1 2 3
M1 9 7 8 8 MM L=100u W=100u
* Default values used in MM:
* The voltage-dependent capacitances are
* not included. Other default values are:
* RS=0 RD=0 LD=0 CBD=0 CBS=0 CGBO=0
.MODEL MM NMOS LEVEL=1 IS=1e-32
+VTO=3.56362 LAMBDA=0.00291031 KP=25.0081
+CGSO=1.60584e-05 CGDO=4.25919e-07
RS 8 3 0.0317085
D1 3 1 MD
.MODEL MD D IS=1.02194e-10 RS=0.00968022 N=1.21527 BV=100
+IBV=0.00025 EG=1.2 XTI=3.03885 TT=1e-07
+CJO=1.81859e-09 VJ=1.1279 M=0.449161 FC=0.5
RDS 3 1 4e+06
RD 9 1 0.0135649
RG 2 7 5.11362
D2 4 5 MD1
* Default values used in MD1:
* RS=0 EG=1.11 XTI=3.0 TT=0
* BV=infinite IBV=1mA
.MODEL MD1 D IS=1e-32 N=50
+CJO=2.49697e-09 VJ=0.5 M=0.9 FC=1e-08
D3 0 5 MD2
* Default values used in MD2:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* BV=infinite IBV=1mA
.MODEL MD2 D IS=1e-10 N=0.4 RS=3e-06
RL 5 10 1
FI2 7 9 VFI2 -1
VFI2 4 0 0
EV16 10 0 9 7 1
CAP 11 10 2.49697e-09
FI1 7 9 VFI1 -1
VFI1 11 6 0
RCAP 6 10 1
D4 0 6 MD3
* Default values used in MD3:
* EG=1.11 XTI=3.0 TT=0 CJO=0
* RS=0 BV=infinite IBV=1mA
.MODEL MD3 D IS=1e-10 N=0.4
.ENDS
"}
C {lab_pin.sym} 460 -640 0 0 {name=p18 lab=VNN}
C {ammeter.sym} 460 -870 0 0 {name=vd  net_name=true current=0.2069}
C {ammeter.sym} 460 -970 0 0 {name=vu  net_name=true current=0.2005}
C {lab_pin.sym} 460 -1160 0 0 {name=p27 lab=VPP}
C {lab_pin.sym} 460 -910 0 0 {name=p3 lab=OUT}
C {comp_ngspice.sym} 550 -370 2 1 {name=x1 
OFFSET=0
AMPLITUDE=10}
C {bsource.sym} 220 -730 0 1 {name=B1 VAR=V FUNC="'6/2*(1+tanh(V(DRIVED)*20))'"
}
C {lab_pin.sym} 710 -370 0 1 {name=p6 lab=DRIVED}
C {bsource.sym} 220 -1050 0 1 {name=B2 VAR=V FUNC="'6/2*(1+tanh(V(DRIVEU)*20))'"
}
C {code_shown.sym} 0 -290 0 0 {name=CONTROL value="
.param VCC=10
.control
save all
tran 100n 2000u uic
write classD_amp.raw
.endc

" net_name=true}
C {title.sym} 160 -40 0 0 {name=l1 author="Stefan Schippers" net_name=true}
C {vsource.sym} 70 -540 0 0 {name=VVPP value=40}
C {lab_pin.sym} 70 -490 0 0 {name=p9 lab=VSS}
C {lab_pin.sym} 70 -590 0 0 {name=p10 lab=VPP}
C {vsource.sym} 190 -540 0 0 {name=VVNN value=-40}
C {lab_pin.sym} 190 -490 0 0 {name=p11 lab=VSS}
C {lab_pin.sym} 190 -590 0 0 {name=p12 lab=VNN}
C {vsource.sym} 70 -400 0 0 {name=VVSS value=0}
C {lab_pin.sym} 70 -350 0 0 {name=p13 lab=0}
C {lab_pin.sym} 70 -450 0 0 {name=p14 lab=VSS}
C {lab_pin.sym} 220 -1090 0 0 {name=p15 lab=GU}
C {lab_pin.sym} 220 -770 0 0 {name=p16 lab=GD}
C {launcher.sym} 1290 -50 0 0 {name=h5 
descr="Select arrow and 
Ctrl-Left-Click to load/unload waveforms" 
tclcommand="
xschem raw_read $netlist_dir/[file tail [file rootname [xschem get current_name]]].raw
"
}
C {res.sym} 310 -1090 1 1 {name=R2 m=1 value=2}
C {res.sym} 310 -770 1 1 {name=R3 m=1 value=2}
C {parax_cap.sym} 370 -1080 0 0 {name=C3 gnd=0 value=20f m=1}
C {parax_cap.sym} 370 -760 0 0 {name=C1 gnd=0 value=20f m=1}
C {parax_cap.sym} 610 -910 0 0 {name=C2 gnd=0 value=10n m=1}
C {lab_wire.sym} 410 -1090 0 0 {name=l19 lab=GU_I}
C {lab_wire.sym} 410 -770 0 0 {name=l2 lab=GD_I}
C {vsource.sym} 440 -180 0 0 {name=V6 value="pulse 0 VCC 0 5u 5u 5p 10u"}
C {lab_pin.sym} 440 -130 0 0 {name=p19 lab=VSS}
C {lab_pin.sym} 440 -230 0 0 {name=p20 lab=REF}
C {vsource.sym} 260 -180 0 0 {name=V7 value="SIN ( 5 4 2000 0 0 0 )"
}
C {lab_pin.sym} 260 -130 0 0 {name=p21 lab=VSS}
C {lab_pin.sym} 260 -230 0 0 {name=p22 lab=IN}
C {parax_cap.sym} 670 -360 0 0 {name=C4 gnd=0 value=200f m=1}
C {ind.sym} 710 -920 1 0 {name=L1
m=1
value=0.03m
footprint=1206
device=inductor}
C {capa.sym} 780 -860 0 0 {name=C5
m=1
value=20u
footprint=1206
device="ceramic capacitor"}
C {lab_pin.sym} 940 -920 0 1 {name=p4 lab=OUT_LPF}
C {lab_pin.sym} 780 -810 0 0 {name=p7 lab=VSS}
C {res.sym} 900 -860 0 1 {name=R4 m=1 value=8}
C {lab_pin.sym} 900 -810 0 0 {name=p8 lab=VSS}
C {launcher.sym} 1290 -110 0 0 {name=h1 
descr="Netlist + Simulate
Ctrl-Left-Click" 
tclcommand="xschem netlist; xschem simulate"
}
C {comp_ngspice.sym} 550 -520 0 0 {name=x2 
OFFSET=0
AMPLITUDE=10}
C {lab_pin.sym} 710 -520 0 1 {name=p1 lab=DRIVEU}
C {parax_cap.sym} 670 -510 0 0 {name=C6 gnd=0 value=200f m=1}
C {vsource.sym} 440 -460 0 1 {name=Voffs value=0.1}
C {lab_pin.sym} 440 -490 0 0 {name=p2 lab=REFU}
C {vsource.sym} 440 -310 2 1 {name=Voffs1 value=-0.1}
C {lab_pin.sym} 440 -340 0 0 {name=p5 lab=REFD}
C {lab_pin.sym} 440 -280 0 0 {name=p17 lab=REF}
C {lab_pin.sym} 440 -430 0 0 {name=p23 lab=REF}