Version 4
SHEET 1 1832 680
WIRE -544 144 -544 112
WIRE -544 256 -576 256
WIRE -544 256 -544 224
WIRE -544 288 -544 256
WIRE -544 400 -544 368
WIRE -304 112 -544 112
WIRE -304 192 -304 112
WIRE -304 400 -544 400
WIRE -304 400 -304 320
WIRE -272 192 -304 192
WIRE -272 320 -304 320
WIRE -240 192 -272 192
WIRE -240 320 -272 320
WIRE -128 416 -128 384
WIRE -128 528 -128 496
WIRE -112 192 -176 192
WIRE -112 320 -176 320
WIRE 0 -64 0 -80
WIRE 0 48 0 16
WIRE 0 384 -128 384
WIRE 64 192 -32 192
WIRE 64 320 -32 320
WIRE 64 384 0 384
WIRE 144 -80 0 -80
WIRE 144 96 144 -80
WIRE 144 448 144 416
WIRE 192 -80 144 -80
WIRE 192 96 192 -80
WIRE 192 448 192 416
WIRE 272 -80 192 -80
WIRE 272 -48 272 -80
WIRE 272 48 272 16
WIRE 368 192 288 192
WIRE 368 320 288 320
WIRE 432 192 368 192
WIRE 432 320 368 320
WIRE 576 96 576 64
WIRE 576 192 512 192
WIRE 576 192 576 160
WIRE 576 320 512 320
WIRE 576 336 576 320
WIRE 576 432 576 400
WIRE 672 192 576 192
WIRE 672 320 576 320
WIRE 720 192 672 192
WIRE 720 208 720 192
WIRE 720 320 672 320
WIRE 720 320 720 288
FLAG -576 256 0
FLAG -128 528 0
FLAG 144 448 0
FLAG 192 448 0
FLAG 0 48 0
FLAG 272 48 0
FLAG 576 432 0
FLAG 576 64 0
FLAG -272 192 in+
FLAG -272 320 in-
FLAG 368 192 outm
FLAG 368 320 outp
FLAG 672 192 sp1
FLAG 672 320 sp2
FLAG 0 384 sd
SYMBOL res -128 208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R1
SYMATTR Value 150k
SYMBOL res -128 336 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 150k
SYMBOL ncp2820 176 256 R0
SYMATTR InstName U1
SYMBOL cap -240 208 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL cap -240 336 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL Misc\\signal -544 128 R0
SYMATTR InstName V1
SYMATTR Value SINE(0 0.5 1K)
SYMBOL Misc\\signal -544 272 R0
SYMATTR InstName V2
SYMATTR Value SINE(0 0.5 1K)
SYMBOL Misc\\signal -128 400 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 3 1m 1u 1u 20m 1)
SYMBOL Misc\\battery 0 -80 R0
WINDOW 123 0 0 Left 0
WINDOW 39 24 132 Left 0
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName V4
SYMATTR Value 4V
SYMBOL cap 256 -48 R0
SYMATTR InstName C3
SYMATTR Value 1µ
SYMBOL ind 416 208 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 15µ
SYMATTR SpiceLine Rser=0.1
SYMBOL ind 416 336 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L2
SYMATTR Value 15µ
SYMATTR SpiceLine Rser=0.1
SYMBOL cap 560 336 R0
SYMATTR InstName C4
SYMATTR Value 2.2µ
SYMBOL cap 560 96 R0
SYMATTR InstName C5
SYMATTR Value 2.2µ
SYMBOL res 704 192 R0
SYMATTR InstName Rload
SYMATTR Value 8
TEXT -568 -392 Left 0 !.options plotwinsize=0
TEXT -568 -464 Left 0 !.lib NCP2820_1.lib
TEXT -568 -496 Left 0 !.include misc_1.lib
TEXT -568 -592 Left 0 ;Class D Audio Amplifier\nhttp://www.onsemi.com/pub/Collateral/NCP2820ORCAD.ZIP
TEXT -568 -432 Left 0 !.tran 0 30m 5n
TEXT -568 -128 Left 0 !.save V(outp) V(outm) V(sp1) V(sp2) I(Rload) V(in+) V(in-) V(sd) V(outm) V(outp) I(L1) I(L2)
TEXT -568 -280 Left 0 !* 5us/sec\n.options gmin=1e-10 \n.options abstol=1e-10\n.options reltol=0.01 \n.options trtol=7
TEXT -568 -344 Left 0 ;Requires the Alternate-solver\nControl Panel -> SPICE  Solver:Alternate