From aca3e586aeb4cc39b2abcddf3cd5ecfc754deee8 Mon Sep 17 00:00:00 2001
From: Alessandro Mauri <alemauri001@gmail.com>
Date: Sat, 21 Feb 2026 00:29:32 +0100
Subject: [PATCH] p-channel in high side

---
 sim/pi_filter.asc | 104 ++++++++++++++++++++++++++--------------------
 1 file changed, 58 insertions(+), 46 deletions(-)

diff --git a/sim/pi_filter.asc b/sim/pi_filter.asc
index 5be59a4..e0b4dec 100644
--- a/sim/pi_filter.asc
+++ b/sim/pi_filter.asc
@@ -1,5 +1,5 @@
 Version 4.1
-SHEET 1 944 708
+SHEET 1 1188 708
 WIRE 16 -720 -144 -720
 WIRE 384 -720 96 -720
 WIRE -1248 -560 -1600 -560
@@ -38,41 +38,45 @@ WIRE 512 -400 512 -416
 WIRE -784 -384 -784 -400
 WIRE -1600 -288 -1600 -320
 WIRE -784 -288 -784 -304
+WIRE 288 -288 96 -288
+WIRE 528 -288 288 -288
+WIRE 752 -288 752 -560
+WIRE 752 -288 528 -288
+WIRE 96 -272 96 -288
+WIRE 288 -256 288 -288
+WIRE 528 -256 528 -288
 WIRE -960 -240 -1008 -240
 WIRE -848 -240 -880 -240
-WIRE 752 -208 752 -560
+WIRE 224 -208 192 -208
 WIRE -1008 -176 -1008 -240
 WIRE -784 -176 -784 -192
-WIRE 240 -144 208 -144
-WIRE 512 -144 304 -144
-WIRE 704 -128 592 -128
+WIRE 96 -176 96 -192
+WIRE 192 -176 192 -208
+WIRE 192 -176 96 -176
+WIRE 752 -144 752 -288
+WIRE 288 -128 288 -160
+WIRE 384 -128 288 -128
+WIRE 528 -128 528 -192
+WIRE 528 -128 464 -128
+WIRE 704 -128 528 -128
 WIRE -1600 -112 -1600 -208
-WIRE 208 -80 208 -144
-WIRE 208 -80 96 -80
-WIRE 352 -80 208 -80
-WIRE 512 -80 512 -144
-WIRE 512 -80 480 -80
-WIRE 656 -80 512 -80
+WIRE 288 -96 288 -128
 WIRE -1600 -64 -1600 -112
 WIRE -1600 -64 -1728 -64
 WIRE -1008 -64 -1008 -96
-WIRE 96 -64 96 -80
-WIRE 656 -64 656 -80
 WIRE -1600 -48 -1600 -64
+WIRE 192 -48 192 -176
+WIRE 224 -48 192 -48
+WIRE 96 -32 96 -176
 WIRE -1728 -16 -1728 -64
-WIRE 352 -16 320 -16
-WIRE 592 -16 592 -128
-WIRE 592 -16 480 -16
-WIRE 320 0 320 -16
+WIRE -64 16 -96 16
+WIRE 32 16 16 16
+WIRE 288 32 288 0
 WIRE -1600 48 -1600 32
-WIRE 352 48 96 48
-WIRE 656 48 656 0
-WIRE 656 48 480 48
-WIRE 752 48 752 -112
-WIRE 752 48 656 48
+WIRE 96 80 96 64
+WIRE -96 112 -96 16
 WIRE -1728 128 -1728 48
-WIRE 96 144 96 48
-WIRE 752 208 752 48
+WIRE 752 208 752 -48
 WIRE 848 208 752 208
 WIRE 752 240 752 208
 WIRE 848 256 848 208
@@ -82,21 +86,17 @@ FLAG 752 384 0
 FLAG 512 -400 0
 FLAG -272 -400 0
 FLAG -1600 128 0
-FLAG 96 16 0
-FLAG 96 224 0
+FLAG -96 192 0
 FLAG -1600 -560 vbus
 FLAG -384 -560 vmid
-FLAG 96 -80 vcc
 FLAG 848 384 0
 FLAG -1680 -416 0
 FLAG -1600 -112 vdrv
 FLAG -1728 128 0
 FLAG -784 -176 0
 FLAG -1008 -64 0
-FLAG 320 0 0
-SYMBOL nmos 704 -208 R0
-SYMATTR InstName M1
-SYMATTR Value IRF7832
+FLAG 288 32 0
+FLAG 96 80 0
 SYMBOL res 736 224 R0
 SYMATTR InstName R1
 SYMATTR Value {rtip}
@@ -118,22 +118,11 @@ WINDOW 123 0 0 Left 0
 WINDOW 39 24 44 Left 2
 SYMATTR InstName V1
 SYMATTR Value PWL(0 0 1m 0 1.1m {vbus} 10m {vbus} 10.1m 0)
-SYMBOL voltage 96 -80 R0
-SYMATTR InstName V2
-SYMATTR Value 15
-SYMBOL voltage 96 128 R0
+SYMBOL voltage -96 96 R0
 WINDOW 123 0 0 Left 0
 WINDOW 39 0 0 Left 0
 SYMATTR InstName V3
 SYMATTR Value PULSE(0 5 5m 100n 100n {d*1/fsw} {1/fsw} 200)
-SYMBOL cap 640 -64 R0
-SYMATTR InstName C3
-SYMATTR Value 100n
-SYMBOL diode 240 -128 R270
-WINDOW 0 32 32 VTop 2
-WINDOW 3 0 32 VBottom 2
-SYMATTR InstName D1
-SYMATTR Value 1N5817
 SYMBOL pmos -704 -512 M270
 SYMATTR InstName M2
 SYMATTR Value RRS090P03
@@ -200,8 +189,32 @@ WINDOW 123 0 0 Left 0
 WINDOW 39 0 0 Left 0
 SYMATTR InstName V4
 SYMATTR Value 5
-SYMBOL IRS10752L 416 -48 R0
-WINDOW 3 2 120 Top 2
+SYMBOL Contrib\\Toshiba\\bjt\\TMBT3906 224 0 M180
+SYMATTR InstName U1
+SYMBOL Contrib\\Toshiba\\bjt\\TMBT3904 224 -256 R0
+SYMATTR InstName U3
+SYMBOL res 480 -144 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R7
+SYMATTR Value 500
+SYMBOL diode 512 -192 M180
+WINDOW 0 24 64 Left 2
+WINDOW 3 24 0 Left 2
+SYMATTR InstName D1
+SYMATTR Value UFZV15B
+SYMBOL pmos 704 -48 M180
+SYMATTR InstName M1
+SYMATTR Value SP8J66
+SYMBOL res 80 -288 R0
+SYMATTR InstName R6
+SYMATTR Value 1k
+SYMBOL res 32 0 R90
+WINDOW 0 0 56 VBottom 2
+WINDOW 3 32 56 VTop 2
+SYMATTR InstName R13
+SYMATTR Value 1k
+SYMBOL Contrib\\Toshiba\\bjt\\TMBT3904 32 -32 R0
 SYMATTR InstName U2
 TEXT -552 144 Left 2 !.tran 30m
 TEXT -80 -632 Left 2 !.param L=2.2u Is=7
@@ -210,4 +223,3 @@ TEXT -544 384 Left 2 !.param d={pout/(vbus*vbus/rtip)}
 TEXT -544 256 Left 2 !.param vbus=28
 TEXT -544 320 Left 2 !.param pout=130
 TEXT -544 288 Left 2 !.param rtip=2.5
-TEXT 352 112 Left 2 !.lib IRS10752L.lib