Version 4
SHEET 1 948 756
WIRE -208 0 -576 0
WIRE 304 0 -208 0
WIRE 320 0 304 0
WIRE 480 0 416 0
WIRE 608 0 576 0
WIRE 656 0 608 0
WIRE 752 0 656 0
WIRE -576 16 -576 0
WIRE -208 16 -208 0
WIRE 656 16 656 0
WIRE 752 16 752 0
WIRE 400 64 400 48
WIRE 448 64 400 64
WIRE 496 64 496 48
WIRE 496 64 448 64
WIRE -576 112 -576 96
WIRE -208 112 -208 96
WIRE -96 112 -208 112
WIRE 16 112 -96 112
WIRE 304 112 304 0
WIRE 304 112 272 112
WIRE 656 112 656 80
WIRE 752 112 752 96
WIRE -208 144 -208 112
WIRE 16 192 0 192
WIRE 448 192 448 64
WIRE 448 192 272 192
WIRE -208 240 -208 224
WIRE 16 272 0 272
WIRE 608 272 608 0
WIRE 608 272 272 272
WIRE -96 352 -96 112
WIRE -80 352 -96 352
WIRE 16 352 0 352
WIRE 432 352 272 352
WIRE 304 432 272 432
WIRE 432 448 432 352
WIRE 304 496 304 432
WIRE 304 496 -256 496
WIRE 352 496 304 496
WIRE 608 496 608 272
WIRE 608 496 448 496
WIRE -256 512 -256 496
WIRE -256 608 -256 592
FLAG -576 112 0
FLAG -256 608 0
FLAG 752 112 0
FLAG 656 112 0
FLAG -208 240 0
FLAG 0 192 0
FLAG 0 272 0
SYMBOL voltage -576 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PWL(0 9 1 14 2 14 3 9)
SYMATTR InstName V1
SYMBOL pmos 320 48 R270
WINDOW 0 56 53 VTop 2
WINDOW 3 -16 51 VBottom 2
SYMATTR InstName Q1
SYMATTR Value IRF7210
SYMBOL pmos 576 48 M270
WINDOW 0 55 35 VTop 2
WINDOW 3 -18 38 VBottom 2
SYMATTR InstName Q2
SYMATTR Value IRF7210
SYMBOL res -224 240 M180
WINDOW 0 43 59 Left 2
WINDOW 3 38 30 Left 2
SYMATTR InstName R1
SYMATTR Value 24.9K
SYMBOL res 16 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 187K
SYMBOL res -224 112 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 221K
SYMBOL pmos 352 448 M90
WINDOW 0 3 50 VBottom 2
WINDOW 3 53 47 VTop 2
SYMATTR InstName Q3
SYMATTR Value IRF7210
SYMBOL voltage -256 496 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 10.8
SYMBOL res 736 0 R0
SYMATTR InstName Rload
SYMATTR Value 100
SYMBOL cap 640 16 R0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL SpecialFunctions\\LTC4416 144 272 R0
SYMATTR InstName U1
TEXT 32 536 Left 2 !.tran 3.2 startup
TEXT 136 -48 Bottom 2 ;Automatic PowerPath Switchover
TEXT -576 -8 Bottom 2 ;Primary Supply
TEXT -256 488 Bottom 2 ;Backup Supply
TEXT 752 0 Bottom 2 ;LOAD