Schematic and BOM work. Also, some load dump simulation.

trunk/PowerLock EL/Simulations/Load Dump - 24v system.asc

@@ -1,10 +1,23 @@
 Version 4
-SHEET 1 952 680
+SHEET 1 1152 948
+WIRE 480 -464 112 -464
+WIRE 576 -464 560 -464
+WIRE 656 -464 576 -464
+WIRE 752 -464 656 -464
+WIRE 848 -464 832 -464
+WIRE 576 -400 576 -464
+WIRE 656 -400 656 -464
+WIRE 848 -368 848 -400
+WIRE 576 -288 576 -336
+WIRE 656 -288 656 -320
 WIRE -432 -96 -448 -96
 WIRE -288 -96 -352 -96
 WIRE -160 -96 -288 -96
 WIRE 0 -96 -160 -96
-WIRE 240 -96 0 -96
+WIRE 80 -96 0 -96
+WIRE 112 -96 112 -464
+WIRE 112 -96 80 -96
+WIRE 240 -96 112 -96
 WIRE 320 -96 240 -96
 WIRE 464 -96 400 -96
 WIRE 528 -96 464 -96
@@ -23,21 +36,74 @@ WIRE -448 96 -448 32
 WIRE -288 96 -288 32
 WIRE -160 96 -160 32
 WIRE 512 96 240 96
+WIRE 80 432 80 -96
+WIRE 160 432 80 432
+WIRE 240 432 160 432
+WIRE 432 432 240 432
+WIRE 848 432 528 432
+WIRE 160 448 160 432
+WIRE 240 448 240 432
+WIRE 432 464 432 432
+WIRE 528 464 528 432
+WIRE 352 528 240 528
+WIRE 656 528 608 528
+WIRE 160 544 160 512
+WIRE 240 544 240 528
+WIRE 656 544 656 528
+WIRE 240 624 240 608
+WIRE 656 624 656 608
+WIRE 656 624 608 624
+WIRE 736 624 656 624
+WIRE 848 624 848 432
+WIRE 848 624 816 624
+WIRE 944 624 848 624
+WIRE 1040 624 944 624
+WIRE 656 640 656 624
+WIRE 944 640 944 624
+WIRE 1040 640 1040 624
+WIRE 848 704 848 624
+WIRE 208 720 160 720
+WIRE 352 720 288 720
+WIRE 656 720 656 704
+WIRE 656 720 608 720
+WIRE 944 736 944 704
+WIRE 1040 736 1040 720
+WIRE 176 816 160 816
+WIRE 256 816 240 816
+WIRE 352 816 336 816
+WIRE 848 816 848 784
+WIRE 848 816 608 816
+WIRE 848 832 848 816
+WIRE 480 896 480 880
+WIRE 848 928 848 912
 FLAG -448 176 0
 FLAG 240 176 0
 FLAG 576 144 0
 FLAG 864 160 0
-FLAG 848 -96 Vout
+FLAG 848 -96 Vprotect
 FLAG 576 32 Vctl
 FLAG -288 176 0
 FLAG -160 176 0
 FLAG 0 -96 V_Load_Dump
+FLAG 576 -288 0
+FLAG 656 -288 0
+FLAG 656 -464 V-Ain
+FLAG 848 -288 0
+FLAG 944 736 0
+FLAG 848 928 0
+FLAG 160 816 0
+FLAG 480 896 0
+FLAG 1040 736 0
+FLAG 160 720 0
+FLAG 240 624 0
+FLAG 1040 624 OUT
+FLAG 160 544 0
 SYMBOL voltage -448 80 R0
 WINDOW 3 -99 161 Left 2
 WINDOW 123 0 0 Left 2
 WINDOW 39 0 0 Left 2
+SYMATTR Value EXP(0 202 5ms 10ms 0s 220ms)
 SYMATTR InstName V1
-SYMATTR Value EXP(0 202 2ms 10ms 0s 220ms)
 SYMBOL zener 256 16 R180
 WINDOW 0 24 64 Left 2
 WINDOW 3 24 0 Left 2
@@ -70,8 +136,8 @@ SYMBOL voltage -288 80 R0
 WINDOW 3 40 80 Left 2
 WINDOW 123 0 0 Left 2
 WINDOW 39 0 0 Left 2
-SYMATTR InstName V2
 SYMATTR Value 28.6
+SYMATTR InstName V2
 SYMBOL diode -272 32 R180
 WINDOW 0 24 64 Left 2
 WINDOW 3 24 0 Left 2
@@ -92,5 +158,89 @@ WINDOW 123 0 0 Left 2
 WINDOW 39 0 0 Left 2
 SYMATTR InstName V3
 SYMATTR Value 55.3
-TEXT -482 278 Left 2 !.tran 3s
+SYMBOL res 464 -448 R270
+WINDOW 0 32 56 VTop 2
+WINDOW 3 0 56 VBottom 2
+SYMATTR InstName R7
+SYMATTR Value 100K
+SYMBOL res 640 -416 R0
+SYMATTR InstName R8
+SYMATTR Value 8870R
+SYMBOL cap 560 -400 R0
+SYMATTR InstName C1
+SYMATTR Value 0.1<EFBFBD>F
+SYMBOL res 736 -448 R270
+WINDOW 0 32 56 VTop 2
+WINDOW 3 0 56 VBottom 2
+SYMATTR InstName R9
+SYMATTR Value 1R
+SYMBOL voltage 848 -384 R0
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+SYMATTR InstName V4
+SYMATTR Value 5
+SYMBOL diode 832 -464 R0
+SYMATTR InstName D5
+SYMBOL ind 720 640 R270
+WINDOW 0 32 56 VTop 2
+WINDOW 3 5 56 VBottom 2
+SYMATTR InstName L1
+SYMATTR Value 10<31>
+SYMATTR SpiceLine Rpar=2K
+SYMBOL schottky 640 704 M180
+WINDOW 0 28 62 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D6
+SYMATTR Value 1N5819
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL cap 928 640 R0
+SYMATTR InstName C2
+SYMATTR Value 10<31>
+SYMBOL res 832 688 R0
+SYMATTR InstName R10
+SYMATTR Value 536K
+SYMATTR SpiceLine tol=1 pwr=0.1
+SYMBOL res 832 816 R0
+SYMATTR InstName R11
+SYMATTR Value 38.3K
+SYMATTR SpiceLine tol=1
+SYMBOL cap 640 544 R0
+WINDOW 3 30 49 Left 2
+SYMATTR Value .22<EFBFBD>
+SYMATTR InstName C3
+SYMBOL cap 240 800 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName C4
+SYMATTR Value 470p
+SYMBOL res 352 800 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R12
+SYMATTR Value 16.2K
+SYMBOL res 304 704 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R13
+SYMATTR Value 16.9K
+SYMBOL res 224 432 R0
+SYMATTR InstName R14
+SYMATTR Value 100K
+SYMBOL cap 224 544 R0
+SYMATTR InstName C5
+SYMATTR Value 0.068<EFBFBD>
+SYMBOL LT3682 480 672 R0
+SYMATTR InstName U1
+SYMBOL res 1024 624 R0
+SYMATTR InstName Rload1
+SYMATTR Value 12
+SYMATTR SpiceLine pwr=14w
+SYMBOL cap 144 448 R0
+SYMATTR InstName C6
+SYMATTR Value 2.2<EFBFBD>
+TEXT -480 280 Left 2 !.tran 3s
 TEXT -504 -152 Left 2 ;This simulates a Load Dump on a 24v System
+TEXT 544 -552 Left 2 ;Analog Input intrinsic diode and\nsmall R for current measurement
+TEXT 480 408 Bottom 2 ;LT3682 - 1A <20>Power Step-Down Switching Regulator\nInput:  6.9V - 36V(Transients to 60V)   Output: 5V @ 1A
+TEXT 136 752 Left 2 ;1MHz