Working further on the power supply requirements, simulations, and related changes to schematic and PCB.

trunk/PowerLock/Simulations/Analog In Load Dump.asc

@@ -1,37 +1,40 @@
 Version 4
 SHEET 1 1032 680
-WIRE 96 96 48 96
-WIRE 240 96 176 96
-WIRE 320 96 240 96
-WIRE 464 96 320 96
+WIRE 64 96 48 96
+WIRE 192 96 144 96
+WIRE 288 96 272 96
+WIRE 368 96 288 96
+WIRE 464 96 368 96
 WIRE 560 96 544 96
-WIRE 240 160 240 96
-WIRE 320 160 320 96
+WIRE 288 160 288 96
+WIRE 368 160 368 96
 WIRE 48 192 48 96
+WIRE 144 192 144 96
 WIRE 560 192 560 160
-WIRE 240 272 240 224
-WIRE 320 272 320 240
+WIRE 288 272 288 224
+WIRE 368 272 368 240
 FLAG 48 272 0
-FLAG 240 272 0
-FLAG 320 272 0
+FLAG 288 272 0
+FLAG 368 272 0
 FLAG 48 96 Vin
-FLAG 320 96 Vout
+FLAG 368 96 Vout
 FLAG 560 272 0
+FLAG 144 256 0
 SYMBOL voltage 48 176 R0
 WINDOW 3 -27 140 Left 2
 WINDOW 123 0 0 Left 2
 WINDOW 39 0 0 Left 2
+SYMATTR Value EXP(28v 174v 5ms 10ms 0ms 250ms)
 SYMATTR InstName V1
-SYMATTR Value EXP(28v 86v 5ms 10ms 35ms 40ms)
-SYMBOL res 80 112 R270
+SYMBOL res 176 112 R270
 WINDOW 0 32 56 VTop 2
 WINDOW 3 0 56 VBottom 2
 SYMATTR InstName R1
 SYMATTR Value 100K
-SYMBOL res 304 144 R0
+SYMBOL res 352 144 R0
 SYMATTR InstName R2
 SYMATTR Value 18K
-SYMBOL cap 224 160 R0
+SYMBOL cap 272 160 R0
 SYMATTR InstName C1
 SYMATTR Value 0.1<EFBFBD>F
 SYMBOL res 448 112 R270
@@ -46,5 +49,17 @@ SYMATTR InstName V2
 SYMATTR Value 5
 SYMBOL diode 544 96 R0
 SYMATTR InstName D1
-TEXT 12 340 Left 0 !.tran 200ms
+SYMBOL zener 160 256 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D2
+SYMATTR Value 1N5369B
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL res 160 80 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R4
+SYMATTR Value 2R
+TEXT 16 344 Left 2 !.tran 1s
 TEXT 440 8 Left 2 ;Analog Input intrinsic diode and\nsmall R for current measurement

trunk/PowerLock/Simulations/LIN Power Supply simulation.asc

@@ -0,0 +1,81 @@
+Version 4
+SHEET 1 1376 680
+WIRE 160 -160 -240 -160
+WIRE 416 -160 160 -160
+WIRE 160 -80 160 -160
+WIRE 416 -16 416 -160
+WIRE 160 32 160 0
+WIRE 192 32 160 32
+WIRE 224 32 192 32
+WIRE 352 32 304 32
+WIRE 160 80 160 32
+WIRE 544 80 416 80
+WIRE 624 80 544 80
+WIRE 160 160 160 144
+WIRE 256 160 160 160
+WIRE 336 160 256 160
+WIRE 544 160 544 80
+WIRE 160 176 160 160
+WIRE 624 176 624 80
+WIRE 0 256 -112 256
+WIRE 48 256 0 256
+WIRE 112 256 48 256
+WIRE -240 272 -240 -160
+WIRE -112 272 -112 256
+WIRE 336 272 336 160
+WIRE 48 320 48 256
+WIRE 144 320 48 320
+WIRE 272 320 224 320
+FLAG 160 272 0
+FLAG -112 352 0
+FLAG -240 352 0
+FLAG 544 240 0
+FLAG 624 240 0
+FLAG 112 32 Ztop
+FLAG 624 80 Vout
+FLAG 0 256 Pulse
+FLAG 192 32 Ztop
+FLAG 336 368 0
+FLAG 256 160 Zbot
+SYMBOL nmos 112 176 R0
+SYMATTR InstName M1
+SYMBOL zener 176 144 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D1
+SYMATTR Value BZX84C12L
+SYMBOL res 144 -96 R0
+SYMATTR InstName R1
+SYMATTR Value 10k
+SYMBOL res 320 16 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R2
+SYMATTR Value 1k
+SYMBOL npn 352 -16 R0
+SYMATTR InstName Q1
+SYMBOL voltage -112 256 R0
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+SYMATTR InstName V1
+SYMATTR Value PULSE(0 5 1ms 0 0 1ms 2)
+SYMBOL voltage -240 256 R0
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+SYMATTR InstName V2
+SYMATTR Value 36
+SYMBOL res 528 144 R0
+SYMATTR InstName R3
+SYMATTR Value 1k
+SYMBOL cap 608 176 R0
+SYMATTR InstName C1
+SYMATTR Value 0.1<EFBFBD>f
+SYMBOL npn 272 272 R0
+SYMATTR InstName Q2
+SYMBOL res 240 304 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R4
+SYMATTR Value 1k
+TEXT -274 376 Left 2 !.tran 3ms
+TEXT 488 -136 Left 2 ;Simulation of power supply circuitry from C&F.\nThis circuit did not appear that it could work as intended,\nand this simulation proves that is the case.

trunk/PowerLock/Simulations/LT3690_DC1520A.asc

@@ -0,0 +1,121 @@
+Version 4
+SHEET 1 2020 1012
+WIRE -208 16 -320 16
+WIRE -128 16 -208 16
+WIRE -96 16 -128 16
+WIRE 96 16 -96 16
+WIRE -320 32 -320 16
+WIRE -208 32 -208 16
+WIRE 96 32 96 16
+WIRE -96 80 -96 16
+WIRE -64 80 -96 80
+WIRE 320 80 256 80
+WIRE 560 80 400 80
+WIRE -320 128 -320 112
+WIRE -208 128 -208 96
+WIRE -128 176 -128 16
+WIRE -64 176 -128 176
+WIRE 560 176 560 80
+WIRE 560 176 256 176
+WIRE -144 272 -176 272
+WIRE -64 272 -80 272
+WIRE 288 272 256 272
+WIRE -160 368 -176 368
+WIRE -64 368 -80 368
+WIRE 288 368 288 336
+WIRE 288 368 256 368
+WIRE 352 368 288 368
+WIRE 448 368 432 368
+WIRE 560 368 560 176
+WIRE 560 368 448 368
+WIRE 656 368 560 368
+WIRE 448 384 448 368
+WIRE 560 384 560 368
+WIRE 656 384 656 368
+WIRE 448 464 256 464
+WIRE 448 480 448 464
+WIRE 560 480 560 448
+WIRE 656 480 656 464
+WIRE -240 560 -256 560
+WIRE -160 560 -176 560
+WIRE -64 560 -80 560
+WIRE 272 560 256 560
+WIRE 352 560 336 560
+WIRE 448 576 448 560
+WIRE 96 624 96 608
+FLAG 96 624 0
+FLAG -176 368 0
+FLAG 448 576 0
+FLAG 560 480 0
+FLAG 656 480 0
+FLAG -320 128 0
+FLAG -320 16 IN
+FLAG 656 368 OUT
+FLAG -208 128 0
+FLAG -176 272 0
+FLAG -256 560 0
+FLAG 352 560 0
+SYMBOL ind 336 384 R270
+WINDOW 0 32 56 VTop 2
+WINDOW 3 5 56 VBottom 2
+SYMATTR InstName L2
+SYMATTR Value 3.3<EFBFBD>
+SYMBOL res 432 368 R0
+SYMATTR InstName R4
+SYMATTR Value 316K
+SYMBOL res 432 464 R0
+SYMATTR InstName R5
+SYMATTR Value 102K
+SYMBOL res -64 352 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R6
+SYMATTR Value 45.3K
+SYMBOL cap 544 384 R0
+WINDOW 3 24 60 Left 2
+SYMATTR Value 47<34>
+SYMATTR InstName C4
+SYMBOL res 640 368 R0
+SYMATTR InstName Rload
+SYMATTR Value 3.3
+SYMBOL cap 272 272 R0
+SYMATTR InstName C5
+SYMATTR Value 0.68<EFBFBD>
+SYMBOL voltage -320 16 R0
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+SYMATTR InstName V1
+SYMATTR Value 36
+SYMBOL cap -224 32 R0
+SYMATTR InstName C1
+SYMATTR Value 10<31>
+SYMBOL PowerProducts\\LT3690 96 272 R0
+SYMATTR InstName U1
+SYMBOL cap -80 256 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName C2
+SYMATTR Value 0.47<EFBFBD>
+SYMBOL res -64 544 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 21.5K
+SYMBOL cap -176 544 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName C6
+SYMATTR Value 680p
+SYMBOL res 416 64 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R2
+SYMATTR Value 100K
+SYMBOL cap 272 576 R270
+WINDOW 0 32 32 VTop 2
+WINDOW 3 0 32 VBottom 2
+SYMATTR InstName C3
+SYMATTR Value 1000p
+TEXT -448 632 Left 2 ;Note:\n  If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n  It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n  Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n  Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n  Copyright <20> 2011 Linear Technology Inc. All rights reserved.
+TEXT 168 0 Bottom 2 ;LT3690 - 36V, 4A. 1.5MHz Synchronous Step-Down Switching Regulator with 70<37>A Quiescent Current\nInput: 12V       Output: 3.3V @ 4A
+TEXT 568 600 Left 2 !.tran 800u startup

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

@@ -0,0 +1,96 @@
+Version 4
+SHEET 1 952 680
+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 320 -96 240 -96
+WIRE 464 -96 400 -96
+WIRE 528 -96 464 -96
+WIRE 848 -96 624 -96
+WIRE 864 -96 848 -96
+WIRE 240 -48 240 -96
+WIRE -448 -32 -448 -96
+WIRE -288 -32 -288 -96
+WIRE -160 -32 -160 -96
+WIRE 576 -16 576 -32
+WIRE 576 -16 464 -16
+WIRE 576 32 576 -16
+WIRE 576 48 576 32
+WIRE 864 80 864 -96
+WIRE -448 96 -448 32
+WIRE -288 96 -288 32
+WIRE -160 96 -160 32
+WIRE 512 96 240 96
+FLAG -448 176 0
+FLAG 240 176 0
+FLAG 576 144 0
+FLAG 864 160 0
+FLAG 848 -96 Vout
+FLAG 576 32 Vctl
+FLAG -288 176 0
+FLAG -160 176 0
+FLAG 0 -96 V_Load_Dump
+SYMBOL voltage -448 80 R0
+WINDOW 3 -99 161 Left 2
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+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
+SYMATTR InstName D1
+SYMATTR Value DFLZ33
+SYMBOL res 224 0 R0
+SYMATTR InstName R1
+SYMATTR Value 25K
+SYMBOL res 224 80 R0
+SYMATTR InstName R2
+SYMATTR Value 2K
+SYMBOL npn 512 48 R0
+SYMATTR InstName Q1
+SYMATTR Value 2N3904
+SYMBOL npn 528 -32 R270
+SYMATTR InstName Q2
+SYMATTR Value 2N3904
+SYMBOL res 848 64 R0
+SYMATTR InstName R3
+SYMATTR Value 360R
+SYMBOL res 448 -112 R0
+SYMATTR InstName R4
+SYMATTR Value 1000
+SYMBOL res 416 -112 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R6
+SYMATTR Value 1R
+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
+SYMBOL diode -272 32 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D2
+SYMBOL diode -432 32 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D3
+SYMBOL res -336 -112 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R5
+SYMATTR Value 2R
+SYMBOL diode -176 -32 R0
+SYMATTR InstName D4
+SYMBOL voltage -160 80 R0
+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
+TEXT -504 -152 Left 2 ;This simulates a Load Dump on a 24v System

trunk/PowerLock/Simulations/Load Dump - NPN Pass.asc

@@ -0,0 +1,50 @@
+Version 4
+SHEET 1 880 680
+WIRE -16 48 -112 48
+WIRE 48 48 -16 48
+WIRE 192 48 128 48
+WIRE 208 48 192 48
+WIRE 384 48 304 48
+WIRE 416 48 384 48
+WIRE -16 128 -16 48
+WIRE 48 128 -16 128
+WIRE 256 128 256 112
+WIRE 256 128 128 128
+WIRE -112 144 -112 48
+WIRE 416 144 416 48
+WIRE 256 160 256 128
+FLAG -112 224 0
+FLAG 256 224 0
+FLAG 416 224 0
+FLAG 384 48 Vout
+FLAG -112 48 Vin
+FLAG 192 48 Vc
+SYMBOL voltage -112 128 R0
+WINDOW 3 -11 138 Left 2
+WINDOW 123 0 0 Left 2
+WINDOW 39 0 0 Left 2
+SYMATTR InstName V1
+SYMATTR Value EXP(24 56 2ms 1ms 0s 200ms)
+SYMBOL zener 272 224 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D1
+SYMATTR Value DFLZ33
+SYMBOL res 144 32 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 1
+SYMATTR SpiceLine pwr=.25w
+SYMBOL res 400 128 R0
+SYMATTR InstName R2
+SYMATTR Value 500
+SYMBOL npn 208 112 R270
+SYMATTR InstName Q1
+SYMATTR Value 2N3904
+SYMBOL res 144 112 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R3
+SYMATTR Value 470
+TEXT 30 286 Left 2 !.tran 2s