From 73bf1b279a1bae545fa53439edf774b743752bdf Mon Sep 17 00:00:00 2001
From: dwarning <dwarning>
Date: Mon, 3 Dec 2018 16:35:27 +0100
Subject: [PATCH] Demonstration of mobility reduction and weak-inversion model.

---
 examples/vdmos/mtriode_nch.sp | 13 +++++++++++++
 examples/vdmos/theta_nch.sp   | 13 +++++++++++++
 2 files changed, 26 insertions(+)
 create mode 100644 examples/vdmos/mtriode_nch.sp
 create mode 100644 examples/vdmos/theta_nch.sp

diff --git a/examples/vdmos/mtriode_nch.sp b/examples/vdmos/mtriode_nch.sp
new file mode 100644
index 000000000..463b84c6e
--- /dev/null
+++ b/examples/vdmos/mtriode_nch.sp
@@ -0,0 +1,13 @@
+VDMOS Mtriode Test
+M1 D G 0 IRFP240
+VG G 0 1V
+VD D 0 0.1V
+.control
+foreach myMTRIODE 0.5 1.0 1.5
+ altermod @IRFP240[MTRIODE]=$myMTRIODE
+ dc vd 0 30 0.1 vg 4 10 1
+end
+plot abs(dc1.vd#branch) abs(dc2.vd#branch) abs(dc3.vd#branch) 
+.endc
+.model IRFP240 VDMOS(Rg=3 Vto=4 Rd=72m Rs=18m Rb=36m Kp=4.9 Lambda=.03 Cgdmax=1.34n Cgdmin=.1n Cgs=1.25n Cjo=1.25n Is=67p ksubthres=.1 Vds=200 Ron=180m Qg=70n)
+.end
diff --git a/examples/vdmos/theta_nch.sp b/examples/vdmos/theta_nch.sp
new file mode 100644
index 000000000..773172982
--- /dev/null
+++ b/examples/vdmos/theta_nch.sp
@@ -0,0 +1,13 @@
+VDMOS Mobility Reduction
+M1 D G 0 IRFP240
+VG G 0 9V
+VD D 0 1V
+.control
+foreach myTHETA 0.1 0.2 0.3 0.4 0.5
+ altermod @IRFP240[THETA]=$myTHETA
+ dc VG 2 9 0.1
+end
+plot abs(dc1.vd#branch) abs(dc2.vd#branch) abs(dc3.vd#branch) abs(dc4.vd#branch) abs(dc5.vd#branch)
+.endc
+.model IRFP240 VDMOS(Rg=3 Vto=4 Rd=72m Rs=18m Rb=36m Kp=4.9 Lambda=.03 Cgdmax=1.34n Cgdmin=.1n Cgs=1.25n Cjo=1.25n Is=67p ksubthres=.1 Vds=200 Ron=180m Qg=70n)
+.end