Version 4
SHEET 1 7312 3352
WIRE 1680 -496 1488 -496
WIRE 2096 -496 1680 -496
WIRE 1680 -480 1680 -496
WIRE 1488 -384 1488 -496
WIRE 1584 -384 1584 -400
WIRE 1680 -384 1680 -400
WIRE 1776 -384 1776 -400
WIRE 1872 -384 1872 -400
WIRE 1968 -384 1968 -400
WIRE 1152 -352 1120 -352
WIRE 1264 -352 1232 -352
WIRE 1280 -352 1264 -352
WIRE 2096 -352 2096 -496
WIRE 2096 -352 2080 -352
WIRE 1264 -304 1264 -352
WIRE 1280 -304 1264 -304
WIRE 2096 -304 2096 -352
WIRE 2096 -304 2080 -304
WIRE 2144 -304 2128 -304
WIRE 2240 -304 2224 -304
WIRE 2336 -304 2304 -304
WIRE 2608 -304 2336 -304
WIRE 1264 -256 1264 -304
WIRE 1280 -256 1264 -256
WIRE 2112 -256 2080 -256
WIRE 1280 -208 832 -208
WIRE 2128 -208 2128 -304
WIRE 2128 -208 2080 -208
WIRE 2176 -208 2160 -208
WIRE 2336 -208 2336 -304
WIRE 2336 -208 2256 -208
WIRE 832 -192 832 -208
WIRE 2336 -192 2336 -208
WIRE 1280 -160 1264 -160
WIRE 2160 -160 2160 -208
WIRE 2160 -160 2080 -160
WIRE 2608 -128 2608 -304
WIRE 1280 -112 1264 -112
WIRE 2128 -112 2080 -112
WIRE 2288 -112 2128 -112
WIRE 832 -96 832 -112
WIRE 1280 -64 1264 -64
WIRE 2336 -64 2336 -96
WIRE 2336 -64 2080 -64
WIRE 2128 -48 2128 -112
WIRE 2336 -48 2336 -64
WIRE 1680 -16 1680 -32
WIRE 1872 -16 1872 -32
WIRE 1488 0 1488 -32
WIRE 2128 48 2128 32
WIRE 2336 48 2336 32
WIRE 2128 128 2128 112
WIRE 2336 128 2336 96
WIRE 2464 128 2464 96
WIRE 1392 144 1360 144
WIRE 1520 144 1472 144
WIRE 2336 224 2336 192
WIRE 2464 224 2464 208
WIRE 2464 224 2336 224
WIRE 2608 224 2608 -48
WIRE 2608 224 2464 224
FLAG 832 -96 0
FLAG 1120 -352 0
FLAG 1264 -64 0
FLAG 2608 -304 VBUS+
FLAG 2608 224 VBUS-
FLAG 1360 144 0
FLAG 1488 0 COM
FLAG 2112 -256 COM
FLAG 2336 48 COM
FLAG 2128 128 COM
FLAG 2464 96 COM
FLAG 2336 96 COM
FLAG 1520 144 COM
SYMBOL LTM9100 1680 -224 R0
WINDOW 123 0 105 Center 2
SYMATTR Value2 OVRTRY=1 UVRTRY=1 OCRTRY=1
SYMATTR InstName U1
SYMBOL voltage 832 -208 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value PULSE(0 3.3 1m 5n 5n 1 2)
SYMATTR InstName V1
SYMBOL voltage 1248 -352 M270
WINDOW 123 -74 56 VBottom 2
WINDOW 39 -53 56 VBottom 2
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL nmos 2288 -192 R0
SYMATTR InstName Q1
SYMATTR Value IRF1310
SYMBOL res 2320 -64 R0
SYMATTR InstName R1
SYMATTR Value .008
SYMBOL res 2272 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL res 2240 -320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL cap 2304 -320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL cap 2320 128 R0
SYMATTR InstName C2
SYMATTR Value 1500u
SYMBOL voltage 2608 -144 R0
SYMATTR InstName V3
SYMATTR Value 48
SYMBOL res 2112 -64 R0
SYMATTR InstName R4
SYMATTR Value 10
SYMBOL cap 2112 48 R0
WINDOW 3 27 53 Left 2
SYMATTR Value 47n
SYMATTR InstName C3
SYMBOL res 1664 -496 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL voltage 1488 144 R90
WINDOW 123 74 56 VTop 2
WINDOW 39 53 56 VTop 2
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Visodiff
SYMATTR Value 0
SYMBOL res 2448 112 R0
SYMATTR InstName R6
SYMATTR Value 2Meg
TEXT 1912 232 Left 2 !.tran 500m startup
TEXT 1432 248 Top 2 ;Set Visodiff non-zero to show operation with \ndifferent voltages on either side of the isolation barrier.