From bb914356534ee0700f0b193a5dcaa6325e7492df Mon Sep 17 00:00:00 2001
From: AnkitYadav <ankit@vecmocon.com>
Date: Thu, 11 Sep 2025 14:35:56 +0530
Subject: [PATCH] Inital commit: Low-side diagnostic circuits

---
 LTspice/Conactor Based Low-side design.asc    | 283 ++++++++++++++++++
 LTspice/Conactor Based Low-side design.log    |  19 ++
 LTspice/Conactor Based Low-side design.net    |  50 ++++
 LTspice/Conactor Based Low-side design.op.raw | Bin 0 -> 3816 bytes
 LTspice/Conactor Based Low-side design.raw    | Bin 0 -> 8290 bytes
 LTspice/Draft1.asc                            | 211 +++++++++++++
 LTspice/Draft1.log                            |  20 ++
 LTspice/Draft1.op.raw                         | Bin 0 -> 3166 bytes
 LTspice/Draft1.raw                            | Bin 0 -> 3652 bytes
 LTspice/Draft2.asc                            | 212 +++++++++++++
 LTspice/Draft2.log                            |  19 ++
 LTspice/Draft2.op.raw                         | Bin 0 -> 2876 bytes
 LTspice/Draft2.raw                            | Bin 0 -> 3306 bytes
 LTspice/Mosfet based low side design.asc      | 281 +++++++++++++++++
 LTspice/Mosfet based low side design.log      |  18 ++
 LTspice/Mosfet based low side design.op.raw   | Bin 0 -> 4068 bytes
 LTspice/Mosfet based low side design.raw      | Bin 0 -> 4682 bytes
 17 files changed, 1113 insertions(+)
 create mode 100644 LTspice/Conactor Based Low-side design.asc
 create mode 100644 LTspice/Conactor Based Low-side design.log
 create mode 100644 LTspice/Conactor Based Low-side design.net
 create mode 100644 LTspice/Conactor Based Low-side design.op.raw
 create mode 100644 LTspice/Conactor Based Low-side design.raw
 create mode 100644 LTspice/Draft1.asc
 create mode 100644 LTspice/Draft1.log
 create mode 100644 LTspice/Draft1.op.raw
 create mode 100644 LTspice/Draft1.raw
 create mode 100644 LTspice/Draft2.asc
 create mode 100644 LTspice/Draft2.log
 create mode 100644 LTspice/Draft2.op.raw
 create mode 100644 LTspice/Draft2.raw
 create mode 100644 LTspice/Mosfet based low side design.asc
 create mode 100644 LTspice/Mosfet based low side design.log
 create mode 100644 LTspice/Mosfet based low side design.op.raw
 create mode 100644 LTspice/Mosfet based low side design.raw

diff --git a/LTspice/Conactor Based Low-side design.asc b/LTspice/Conactor Based Low-side design.asc
new file mode 100644
index 0000000..213939d
--- /dev/null
+++ b/LTspice/Conactor Based Low-side design.asc	
@@ -0,0 +1,283 @@
+Version 4.1
+SHEET 1 2984 680
+WIRE 2384 -752 640 -752
+WIRE 2480 -752 2384 -752
+WIRE 2480 -688 2480 -752
+WIRE 640 -640 640 -752
+WIRE 2480 -544 2480 -608
+WIRE 640 -496 640 -560
+WIRE 752 -496 640 -496
+WIRE 784 -496 752 -496
+WIRE 800 -496 784 -496
+WIRE 960 -496 896 -496
+WIRE 1024 -496 960 -496
+WIRE 1120 -496 1104 -496
+WIRE 1136 -496 1120 -496
+WIRE 1328 -496 1200 -496
+WIRE 1952 -496 1328 -496
+WIRE 2160 -496 2016 -496
+WIRE 640 -448 640 -496
+WIRE 1328 -448 1328 -496
+WIRE 2384 -448 2384 -752
+WIRE 1120 -432 1120 -496
+WIRE 1120 -432 992 -432
+WIRE 992 -400 992 -432
+WIRE 784 -384 784 -496
+WIRE 816 -384 784 -384
+WIRE 896 -384 896 -496
+WIRE 896 -384 880 -384
+WIRE 2480 -384 2480 -464
+WIRE 1328 -352 1328 -384
+WIRE 1360 -352 1328 -352
+WIRE 1536 -352 1440 -352
+WIRE 1808 -304 1808 -352
+WIRE 1936 -288 1936 -304
+WIRE 2224 -288 2224 -336
+WIRE 2320 -288 2320 -320
+WIRE 992 -272 992 -320
+WIRE 992 -272 960 -272
+WIRE 1040 -272 992 -272
+WIRE 1136 -272 1104 -272
+WIRE 1136 -224 1136 -272
+WIRE 384 -208 384 -256
+WIRE 1808 -192 1808 -224
+WIRE 1936 -192 1936 -224
+WIRE 176 -176 176 -192
+WIRE 2224 -176 2224 -208
+WIRE 2320 -176 2320 -208
+WIRE 384 -80 384 -128
+WIRE 496 -80 384 -80
+WIRE 384 -64 384 -80
+WIRE 176 -48 176 -96
+WIRE 496 -48 496 -80
+WIRE 752 -48 752 -496
+WIRE 1328 -48 752 -48
+WIRE 1552 -48 1520 -48
+WIRE 1728 -48 1552 -48
+WIRE 2160 -48 2160 -496
+WIRE 2160 -48 1728 -48
+WIRE 2384 -48 2384 -384
+WIRE 2384 -48 2160 -48
+WIRE 2480 -48 2480 -304
+WIRE 2480 -48 2384 -48
+WIRE 1328 16 1152 16
+WIRE 128 32 -64 32
+WIRE 1728 32 1728 -48
+WIRE 384 48 384 16
+WIRE 432 48 384 48
+WIRE 496 48 496 16
+WIRE 496 48 432 48
+WIRE 432 64 432 48
+WIRE 176 80 176 48
+WIRE 2608 80 2560 80
+WIRE 2448 96 2160 96
+WIRE 2480 96 2480 80
+WIRE 2480 96 2448 96
+WIRE 2608 112 2608 80
+WIRE 2656 112 2608 112
+WIRE 1728 128 1728 96
+WIRE 1760 128 1728 128
+WIRE 1936 128 1840 128
+WIRE 2656 144 2656 112
+WIRE 1440 176 1440 128
+WIRE 2448 176 2448 96
+WIRE 2496 176 2448 176
+WIRE 2608 176 2608 112
+WIRE 2608 176 2560 176
+WIRE 2016 368 1952 368
+WIRE 2144 368 2096 368
+WIRE 2400 368 2240 368
+WIRE 2400 400 2400 368
+WIRE 2016 432 2016 368
+WIRE 2224 464 2224 416
+WIRE 2448 464 2448 176
+WIRE 2448 464 2224 464
+WIRE 2016 528 2016 512
+WIRE 2016 544 2016 528
+FLAG 2320 -176 0
+FLAG 640 -448 0
+FLAG 1136 -224 0
+FLAG 1808 -192 0
+FLAG 1936 -192 0
+FLAG 1808 -352 PCHG
+IOPIN 1808 -352 BiDir
+FLAG 816 -544 PCHG
+IOPIN 816 -544 BiDir
+FLAG 1936 -352 DCHG
+FLAG 2656 144 0
+FLAG 2400 400 0
+FLAG 1440 176 0
+FLAG 2224 -176 0
+FLAG 2320 -320 3V3
+FLAG 2016 528 3V3
+FLAG 2224 -336 5V
+FLAG 1152 16 DCHG
+FLAG 1936 128 3V3
+FLAG 960 -272 To_MCU_2
+IOPIN 960 -272 Out
+FLAG 1952 368 To_MCU_3
+IOPIN 1952 368 Out
+FLAG 1536 -352 5V
+FLAG 176 -192 3V3
+FLAG 176 80 0
+FLAG -64 32 To_MCU_2
+IOPIN -64 32 Out
+FLAG 960 -496 PFET_bridge
+FLAG 384 -256 PFET_bridge
+FLAG 432 64 0
+DATAFLAG 1728 -48 ""
+DATAFLAG 1248 -48 ""
+DATAFLAG 992 -272 ""
+DATAFLAG 2096 -496 ""
+DATAFLAG 1728 128 ""
+DATAFLAG 1984 368 ""
+DATAFLAG 2272 464 ""
+DATAFLAG 1120 -496 ""
+DATAFLAG 1264 -496 ""
+DATAFLAG 752 -496 ""
+DATAFLAG 176 -64 ""
+DATAFLAG 384 -80 ""
+SYMBOL nmos 896 -544 R90
+SYMATTR InstName M1
+SYMATTR Value BSP89
+SYMBOL diode 1344 -384 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 36 36 Left 2
+SYMATTR InstName D1
+SYMATTR Value MMSD4148
+SYMBOL res 1456 -368 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
+SYMATTR Value 10k
+SYMBOL Misc\\battery 640 -656 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V1
+SYMATTR Value 57
+SYMBOL Misc\\battery 2320 -304 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V2
+SYMATTR Value 3.3
+SYMBOL res 976 -416 R0
+SYMATTR InstName R2
+SYMATTR Value 1Meg
+SYMBOL zener 1104 -288 R90
+WINDOW 0 -4 32 VBottom 2
+WINDOW 3 36 32 VTop 2
+SYMATTR InstName D2
+SYMATTR Value 3V3Zener
+SYMBOL res 1120 -512 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R3
+SYMATTR Value 25
+SYMBOL diode 816 -368 R270
+WINDOW 0 32 32 VTop 2
+WINDOW 3 0 32 VBottom 2
+SYMATTR InstName D3
+SYMBOL voltage 1808 -320 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V3
+SYMATTR Value PULSE(0 5 0 0.1 0.1 1 2 4)
+SYMBOL voltage 1936 -320 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V4
+SYMATTR Value 5
+SYMBOL diode 2144 -48 R0
+SYMATTR InstName D6
+SYMATTR Value BAT54
+SYMBOL res 2144 0 R0
+SYMATTR InstName R5
+SYMATTR Value 10Meg
+SYMBOL res 2576 64 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R6
+SYMATTR Value 500k
+SYMBOL diode 2560 160 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName D7
+SYMATTR Value EDZV6_8B
+SYMBOL nmos 2144 416 R270
+SYMATTR InstName M4
+SYMBOL res 2112 352 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R7
+SYMATTR Value 1k
+SYMBOL res 2000 416 R0
+SYMATTR InstName R8
+SYMATTR Value 1Meg
+SYMBOL Misc\\battery 2224 -304 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V7
+SYMATTR Value 5
+SYMBOL Switches\\MAX20336 1440 0 R0
+SYMATTR InstName U1
+SYMBOL diode 1744 96 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D5
+SYMATTR Value MMSD4148
+SYMBOL res 1856 112 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R9
+SYMATTR Value 10k
+SYMBOL diode 2016 -512 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName D4
+SYMBOL Misc\\jumper 1168 -560 R0
+SYMATTR InstName X1
+SYMBOL res 2464 -704 R0
+SYMATTR InstName R4
+SYMATTR Value 1.25
+SYMATTR SpiceLine pwr=1000
+SYMBOL ind 2464 -560 R0
+SYMATTR InstName L1
+SYMATTR Value 5m
+SYMBOL cap 2368 -448 R0
+SYMATTR InstName C1
+SYMATTR Value 10m
+SYMBOL nmos 128 -48 R0
+SYMATTR InstName M2
+SYMATTR Value BSP89
+SYMBOL res 160 -192 R0
+SYMATTR InstName R11
+SYMATTR Value 10k
+SYMBOL res 368 -224 R0
+SYMATTR InstName R10
+SYMATTR Value 2Meg
+SYMBOL res 368 -80 R0
+SYMATTR InstName R12
+SYMATTR Value 150k
+SYMBOL zener 512 16 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 -108 7 Left 2
+SYMATTR InstName D8
+SYMATTR Value 3V3Zener1
+SYMBOL voltage 2480 -400 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V5
+SYMATTR Value 0
+TEXT 528 -240 Left 2 !.tran 10
+TEXT 912 -200 Left 2 !.model 3V3Zener D(Ron=0 Roff=100Meg Vfwd=0.7 Vrev 3.3)
+TEXT 2064 144 Left 5 ;LOAD DETECT
+TEXT 1368 -424 Left 4 ;PCHG FET DET
+TEXT 712 -160 Left 4 ;THERMAL FUSE DET
+TEXT 1736 16 Left 4 ;Contactor Weld DET
+TEXT 632 -776 Left 5 ;Bat+
+TEXT 640 -408 Left 5 ;Bat-
+TEXT 2568 -152 Left 5 ;Pack-
+TEXT 2560 -464 Left 5 ;Load
+TEXT 1128 -568 Left 2 !.model zeeno D(Ron=0 Roff=1Meg Vfwd=0.7 Vrev 3.3)
+TEXT 480 56 Left 2 !.model 3V3Zener1 D(Ron=0 Roff=100Meg Vfwd=0.7 Vrev 3.3)
+TEXT 296 96 Left 3 ;This ckt will work only in case of load connected ckt. \nIn case of No-Load, it will not work.
diff --git a/LTspice/Conactor Based Low-side design.log b/LTspice/Conactor Based Low-side design.log
new file mode 100644
index 0000000..40c6d6a
--- /dev/null
+++ b/LTspice/Conactor Based Low-side design.log	
@@ -0,0 +1,19 @@
+LTspice 24.1.9 for Windows
+Circuit: C:\Users\User\Documents\LTspice\Conactor Based Low-side design.net
+Start Time: Thu Sep 11 14:00:28 2025
+solver = Normal
+Maximum thread count: 20
+tnom = 27
+temp = 27
+method = trap
+WARNING: Node pchg is floating.
+WARNING: Node dchg is floating.
+
+Direct Newton iteration for .op point succeeded.
+Total elapsed time: 0.100 seconds.
+
+Files loaded:
+C:\Users\User\Documents\LTspice\Conactor Based Low-side design.net
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.dio
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.mos
+
diff --git a/LTspice/Conactor Based Low-side design.net b/LTspice/Conactor Based Low-side design.net
new file mode 100644
index 0000000..651ac4a
--- /dev/null
+++ b/LTspice/Conactor Based Low-side design.net	
@@ -0,0 +1,50 @@
+* C:\Users\User\Documents\LTspice\Conactor Based Low-side design.asc
+* Generated by LTspice 24.1.9 for Windows.
+M1 PFET_bridge PCHG 0 0 BSP89
+D1 N005 N003 MMSD4148
+R1 5V N005 10k
+V1 N001 0 57
+V2 3V3 0 3.3
+R2 N003 To_MCU_2 1Meg
+D2 0 To_MCU_2 3V3Zener
+R3 N003 PFET_bridge 25
+D3 0 PFET_bridge D
+V3 NC_01 0 PULSE(0 5 0 0.1 0.1 1 2 4)
+V4 N006 0 5
+D6 N004 P001 BAT54
+R5 P001 N008 10Meg
+R6 0 N008 500k
+D7 0 N008 EDZV6_8B
+M4 N012 N008 0 0 NMOS
+R7 N012 To_MCU_3 1k
+R8 To_MCU_3 3V3 1Meg
+V7 5V 0 5
+D5 N009 N004 MMSD4148
+R9 3V3 N009 10k
+D4 N004 N003 D
+R4 N001 NC_02 10 pwr=1000
+M2 N007 To_MCU_2 0 0 BSP89
+R11 3V3 N007 10k
+M3 N004 DCHG 0 0 NMOS
+M5 N010 N011 0 0 BSP89
+R10 3V3 N010 10k
+R12 N011 PFET_bridge 10k
+D8 0 N011 BZX84C15L
+.model D D
+.lib C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.dio
+.model NMOS NMOS
+.model PMOS PMOS
+.lib C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.mos
+.tran 10
+.model 3V3Zener D(Ron=0 Roff=100Meg Vfwd=0.7 Vrev 3.3)
+* LOAD DETECT
+* PCHG FET DET
+* THERMAL FUSE DET
+* Contactor Weld DET
+* Bat+
+* Bat-
+* Pack-
+* Load
+.model zeeno D(Ron=0 Roff=1Meg Vfwd=0.7 Vrev 3.3)
+.backanno
+.end
diff --git a/LTspice/Conactor Based Low-side design.op.raw b/LTspice/Conactor Based Low-side design.op.raw
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diff --git a/LTspice/Draft1.asc b/LTspice/Draft1.asc
new file mode 100644
index 0000000..d94e7d4
--- /dev/null
+++ b/LTspice/Draft1.asc
@@ -0,0 +1,211 @@
+Version 4.1
+SHEET 1 2288 1400
+WIRE 1840 0 0 0
+WIRE 0 112 0 0
+WIRE 1312 224 1312 160
+WIRE 1456 224 1456 160
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+WIRE 688 304 464 304
+WIRE 1840 304 1840 0
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+WIRE 1312 336 1312 304
+WIRE 1456 336 1456 304
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+WIRE 256 368 256 256
+WIRE 256 368 240 368
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+WIRE 896 400 800 400
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+WIRE 448 704 416 704
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+WIRE 576 704 544 704
+WIRE 1024 704 1024 256
+WIRE 1024 704 576 704
+WIRE 1168 704 1168 608
+WIRE 1168 704 1024 704
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+WIRE 1312 704 1312 608
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+WIRE 1840 704 1840 384
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+WIRE 464 800 416 800
+WIRE 576 800 576 704
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+WIRE 1968 832 1920 832
+WIRE 1808 848 1520 848
+WIRE 1840 848 1840 832
+WIRE 1840 848 1808 848
+WIRE 1968 864 1968 832
+WIRE 2016 864 1968 864
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+WIRE 1808 928 1808 848
+WIRE 1856 928 1808 928
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+WIRE 1968 928 1920 928
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+FLAG 896 544 0
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+DATAFLAG 304 704 ""
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+SYMATTR Value BSP89
+SYMBOL diode 704 368 R180
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+WINDOW 3 24 0 Left 2
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+SYMATTR Value MMSD4148
+SYMBOL res 816 384 R90
+WINDOW 0 0 56 VBottom 2
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+WINDOW 3 32 32 VTop 2
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+SYMBOL voltage 1184 208 R0
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+WINDOW 39 0 0 Left 0
+SYMATTR InstName V4
+SYMATTR Value 5
+SYMBOL voltage 1456 208 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V5
+SYMATTR Value 5
+SYMBOL diode 1504 704 R0
+SYMATTR InstName D7
+SYMATTR Value BAT54
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL res 1504 752 R0
+SYMATTR InstName R5
+SYMATTR Value 10Meg
+SYMBOL res 1936 816 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R6
+SYMATTR Value 10Meg
+SYMBOL diode 1920 912 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName D8
+SYMATTR Value EDZV6_8B
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL nmos 1504 1168 R270
+SYMATTR InstName M4
+SYMBOL res 1472 1104 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R7
+SYMATTR Value 1k
+SYMBOL res 1360 1168 R0
+SYMATTR InstName R8
+SYMATTR Value 1Meg
+SYMBOL Misc\\battery 1376 1280 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V6
+SYMATTR Value 3.3
+TEXT -32 568 Left 2 !.tran 10
+TEXT 272 552 Left 2 !.model 3V3Zener D(Ron=0 Roff=1Meg Vfwd=0.7 Vrev 3.3)
+TEXT 1264 944 Left 5 ;LOAD DETECT
+TEXT 728 328 Left 4 ;PCHG FET DET
+TEXT 72 592 Left 4 ;THERMAL FUSE DET
diff --git a/LTspice/Draft1.log b/LTspice/Draft1.log
new file mode 100644
index 0000000..282d4dc
--- /dev/null
+++ b/LTspice/Draft1.log
@@ -0,0 +1,20 @@
+LTspice 24.1.9 for Windows
+Circuit: C:\Users\User\Documents\LTspice\Draft1.net
+Start Time: Fri Aug 22 11:13:05 2025
+solver = Normal
+Maximum thread count: 20
+tnom = 27
+temp = 27
+method = trap
+WARNING: Node pchg is floating.
+WARNING: Node dchg is floating.
+WARNING: Node chg is floating.
+
+Direct Newton iteration for .op point succeeded.
+Total elapsed time: 0.127 seconds.
+
+Files loaded:
+C:\Users\User\Documents\LTspice\Draft1.net
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.dio
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.mos
+
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diff --git a/LTspice/Draft2.asc b/LTspice/Draft2.asc
new file mode 100644
index 0000000..309f402
--- /dev/null
+++ b/LTspice/Draft2.asc
@@ -0,0 +1,212 @@
+Version 4.1
+SHEET 1 2676 680
+WIRE 2480 -752 640 -752
+WIRE 640 -640 640 -752
+WIRE 640 -496 640 -560
+WIRE 752 -496 640 -496
+WIRE 784 -496 752 -496
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+WIRE 2160 -496 2096 -496
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+WIRE 2480 -448 2480 -752
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+WIRE 1328 -48 752 -48
+WIRE 1552 -48 1520 -48
+WIRE 1728 -48 1552 -48
+WIRE 2160 -48 2160 -496
+WIRE 2160 -48 1728 -48
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+WIRE 2480 -48 2160 -48
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+WIRE 1728 32 1728 -48
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+WIRE 2480 96 2480 80
+WIRE 2480 96 2448 96
+WIRE 80 112 80 80
+WIRE 208 112 208 80
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+WIRE 1728 128 1728 96
+WIRE 1760 128 1728 128
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+WINDOW 3 24 0 Left 2
+SYMATTR InstName D1
+SYMATTR Value MMSD4148
+SYMBOL res 1456 -368 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R1
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+SYMBOL Misc\\battery 640 -656 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V1
+SYMATTR Value 53
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+WINDOW 39 0 0 Left 0
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+WINDOW 3 32 56 VTop 2
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+SYMATTR InstName X1
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+SYMATTR InstName V4
+SYMATTR Value 3
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+SYMATTR InstName D6
+SYMATTR Value BAT54
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL res 2144 0 R0
+SYMATTR InstName R5
+SYMATTR Value 10Meg
+SYMBOL res 2576 64 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R6
+SYMATTR Value 10Meg
+SYMBOL diode 2560 160 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName D7
+SYMATTR Value EDZV6_8B
+SYMATTR Description Diode
+SYMATTR Type diode
+SYMBOL nmos 2144 416 R270
+SYMATTR InstName M4
+SYMBOL res 2112 352 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R7
+SYMATTR Value 1k
+SYMBOL res 2000 416 R0
+SYMATTR InstName R8
+SYMATTR Value 1Meg
+SYMBOL Misc\\battery 96 -304 R0
+WINDOW 123 0 0 Left 0
+WINDOW 39 0 0 Left 0
+SYMATTR InstName V7
+SYMATTR Value 5
+SYMBOL diode 2096 -512 R90
+WINDOW 0 0 32 VBottom 2
+WINDOW 3 32 32 VTop 2
+SYMATTR InstName D4
+SYMBOL Switches\\MAX20336 1440 0 R0
+SYMATTR InstName U1
+SYMBOL diode 1744 96 R180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D5
+SYMATTR Value MMSD4148
+SYMBOL res 1856 112 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R9
+SYMATTR Value 10k
+TEXT 528 -240 Left 2 !.tran 10
+TEXT 912 -200 Left 2 !.model 3V3Zener D(Ron=0 Roff=1Meg Vfwd=0.7 Vrev 3.3)
+TEXT 2064 144 Left 5 ;LOAD DETECT
+TEXT 1368 -424 Left 4 ;PCHG FET DET
+TEXT 712 -160 Left 4 ;THERMAL FUSE DET
+TEXT 1768 56 Left 4 ;Contactor DET
diff --git a/LTspice/Draft2.log b/LTspice/Draft2.log
new file mode 100644
index 0000000..2514254
--- /dev/null
+++ b/LTspice/Draft2.log
@@ -0,0 +1,19 @@
+LTspice 24.1.9 for Windows
+Circuit: C:\Users\User\Documents\LTspice\Draft2.net
+Start Time: Fri Aug 22 12:16:21 2025
+solver = Normal
+Maximum thread count: 20
+tnom = 27
+temp = 27
+method = trap
+WARNING: Node pchg is floating.
+
+Direct Newton iteration for .op point succeeded.
+Total elapsed time: 0.165 seconds.
+
+Files loaded:
+C:\Users\User\Documents\LTspice\Draft2.net
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.dio
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.mos
+C:\Users\User\AppData\Local\LTspice\lib\sub\MAX20336.sub
+
diff --git a/LTspice/Draft2.op.raw b/LTspice/Draft2.op.raw
new file mode 100644
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diff --git a/LTspice/Mosfet based low side design.asc b/LTspice/Mosfet based low side design.asc
new file mode 100644
index 0000000..88e82e2
--- /dev/null
+++ b/LTspice/Mosfet based low side design.asc	
@@ -0,0 +1,281 @@
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+FLAG 1456 256 CHG
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+SYMATTR Value BSP89
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+SYMATTR Value 10k
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+SYMATTR Value 53
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+SYMATTR Value 25
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+SYMATTR InstName M3
+SYMATTR Value BSP89
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+SYMATTR Value 5
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+SYMATTR Value 10Meg
+SYMBOL diode 1920 912 R90
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+SYMATTR InstName D8
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+SYMBOL nmos 1504 1168 R270
+SYMATTR InstName M4
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+SYMATTR InstName R8
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+SYMATTR InstName V7
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+SYMBOL diode 704 368 R180
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+SYMATTR InstName D1
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+SYMATTR InstName X1
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+SYMATTR InstName D3
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+WINDOW 39 0 0 Left 0
+SYMATTR InstName V2
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+TEXT 1848 -32 Left 5 ;Pack+
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diff --git a/LTspice/Mosfet based low side design.log b/LTspice/Mosfet based low side design.log
new file mode 100644
index 0000000..d1e5854
--- /dev/null
+++ b/LTspice/Mosfet based low side design.log	
@@ -0,0 +1,18 @@
+LTspice 24.1.9 for Windows
+Circuit: C:\Users\User\Documents\LTspice\Mosfet based low side design.net
+Start Time: Tue Sep  2 13:04:16 2025
+solver = Normal
+Maximum thread count: 20
+tnom = 27
+temp = 27
+method = trap
+WARNING: Node pchg is floating.
+
+Direct Newton iteration for .op point succeeded.
+Total elapsed time: 0.132 seconds.
+
+Files loaded:
+C:\Users\User\Documents\LTspice\Mosfet based low side design.net
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.dio
+C:\Users\User\AppData\Local\LTspice\lib\cmp\standard.mos
+
diff --git a/LTspice/Mosfet based low side design.op.raw b/LTspice/Mosfet based low side design.op.raw
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