Version 4
SHEET 1 1216 840
WIRE -16 112 -16 96
WIRE -16 96 192 96
WIRE 240 96 240 112
WIRE 240 192 240 208
WIRE 240 304 240 320
WIRE 176 288 192 288
WIRE 80 288 96 288
WIRE -32 304 -16 304
WIRE -144 352 -128 352
WIRE 336 208 304 208
WIRE 480 320 480 304
WIRE -16 448 -16 432
WIRE -16 432 64 432
WIRE -304 608 -304 592
WIRE -304 592 -224 592
WIRE -304 448 -304 432
WIRE -304 432 -224 432
WIRE -192 304 -128 304
WIRE -288 304 -256 304
WIRE -288 336 -256 336
WIRE 304 208 240 208
WIRE 544 208 544 224
WIRE 480 208 480 224
WIRE 480 208 544 208
WIRE 544 288 544 304
WIRE -16 608 -16 592
WIRE -16 592 64 592
WIRE -288 368 -272 368
WIRE -272 368 -272 352
WIRE -272 352 -256 352
WIRE -224 432 -224 464
WIRE -224 464 -208 464
WIRE 64 432 64 464
WIRE 64 464 80 464
WIRE 64 592 64 624
WIRE 64 624 80 624
WIRE -224 592 -224 624
WIRE -224 624 -208 624
WIRE 352 448 352 432
WIRE 192 96 240 96
WIRE 352 608 352 624
WIRE -16 304 16 304
WIRE 400 592 416 592
WIRE 416 592 416 624
WIRE 416 624 464 624
WIRE 416 640 416 624
WIRE 400 544 464 544
WIRE 400 208 480 208
WIRE 608 368 560 368
WIRE 560 368 560 528
FLAG 240 400 0
FLAG -16 192 0
FLAG -304 528 0
FLAG -16 528 0
FLAG -144 352 rsr
FLAG 144 464 ssr2
FLAG -304 688 0
FLAG -144 624 rsr
FLAG -144 464 ssr1
FLAG -288 304 ssr1
FLAG -288 336 ssr2
FLAG 304 208 d
FLAG 480 320 0
FLAG 544 304 0
FLAG -16 688 0
FLAG 144 624 ssr3
FLAG 544 208 o
FLAG -288 368 ssr3
FLAG 352 368 d
FLAG 352 624 0
FLAG 192 96 V+
FLAG -16 304 q
FLAG 416 640 0
FLAG 608 528 0
FLAG 608 448 0
FLAG 624 576 0
FLAG 544 576 0
SYMBOL ind 224 96 R0
WINDOW 3 38 71 Left 0
SYMATTR Value {L}
SYMATTR InstName L1
SYMBOL nmos 192 208 R0
SYMATTR InstName M1
SYMATTR Value Si9426DY
SYMBOL Digital\\buf 16 240 R0
WINDOW 3 -8 122 Left 0
WINDOW 123 -8 150 Left 0
SYMATTR Value Vhigh=3 Ref=0.5
SYMATTR Value2 Trise=10n
SYMATTR InstName A3
SYMBOL res 192 272 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL voltage 240 304 R0
SYMATTR InstName V2
SYMATTR Value 0
SYMBOL voltage -16 96 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 0.2m 3)
SYMBOL Digital\\srflop -80 256 R0
WINDOW 3 -40 28 Left 0
SYMATTR Value Td=40n
SYMATTR InstName A2
SYMBOL bv -304 432 R0
SYMATTR InstName B1
SYMATTR Value V=I(D1) < ({Imax}/{k})
SYMBOL bv -16 432 R0
SYMATTR InstName B2
SYMATTR Value V=I(V2) < {Imax/{k}}
SYMBOL res 496 320 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R2
SYMATTR Value {RL}
SYMBOL bv -304 592 R0
SYMATTR InstName B3
SYMATTR Value V=I(V2) >= {Imax}
SYMBOL Digital\\and -224 256 R0
SYMATTR InstName A1
SYMBOL cap 528 224 R0
SYMATTR InstName C1
SYMATTR Value 4.7u
SYMBOL bv -16 592 R0
SYMATTR InstName B4
SYMATTR Value V=V(o) < {Vo}
SYMBOL Digital\\schmtbuf -208 400 R0
WINDOW 3 -1 104 Left 0
SYMATTR Value Vh=0.1 Td=10n
SYMATTR InstName A4
SYMBOL Digital\\schmtbuf 80 400 R0
WINDOW 3 -1 104 Left 0
SYMATTR Value Vh=0.1 Td=10n
SYMATTR InstName A5
SYMBOL Digital\\schmtbuf -208 560 R0
WINDOW 3 -1 104 Left 0
SYMATTR Value Vh=0.1 Td=10n
SYMATTR InstName A6
SYMBOL Digital\\schmtbuf 80 560 R0
WINDOW 3 -1 104 Left 0
SYMATTR Value Vh=0.1 Td=10n
SYMATTR InstName A7
SYMBOL res 336 432 R0
SYMATTR InstName R3
SYMATTR Value 390
SYMBOL cap 336 368 R0
SYMATTR InstName C2
SYMATTR Value 4.7n
SYMBOL sw 352 624 R180
SYMATTR InstName S2
SYMATTR Value DSW
SYMBOL bv 464 528 R0
WINDOW 3 -257 177 Left 0
SYMATTR Value V=(V(q) < 0.5) & (V(d) < V(o)) & (V(ssr2) > 0.5)
SYMATTR InstName B6
SYMBOL sw 640 576 R90
WINDOW 0 39 1 VRight 0
WINDOW 3 48 35 VRight 0
SYMATTR InstName S1
SYMATTR Value DSW
SYMBOL bv 608 352 R0
WINDOW 3 -33 132 Left 0
SYMATTR Value V=V(d) > V(o)
SYMATTR InstName B5
SYMBOL diode 336 224 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName D1
SYMATTR Value Dio
TEXT -336 8 Left 0 !.model Dio D(Ron=30m Roff=10e6 Vfwd=.03)\n.model DSW SW(Ron=0.1 Roff=1e9 Vh=-0.5)\n.param L=100u Imax=0.2 k=10 Vo=8 RL=500\n.tran 0 1.2m 0 50n
TEXT -336 752 Left 0 ;Average I(V1) -43.835mA, 3V*43.835mA = 0.131505W\nAverage V(o) 8.0145V, V(o)^2/RL = 0.1284644205W\n0.1284644205 / 0.131505 = 0.977