From 33a68b73211587c8d9df745d16e3a65522da2ac2 Mon Sep 17 00:00:00 2001
From: Holger Vogt <holger.vogt@uni-due.de>
Date: Sun, 15 Apr 2018 16:59:29 +0200
Subject: [PATCH] return only half of the capacitance cgs and cgd

---
 src/spicelib/devices/devsup.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/spicelib/devices/devsup.c b/src/spicelib/devices/devsup.c
index ac2737707..4d36f8744 100644
--- a/src/spicelib/devices/devsup.c
+++ b/src/spicelib/devices/devsup.c
@@ -625,10 +625,10 @@ DevCapVDMOS(double vgd, double cgdmin,
     double s = (cgdmax - cgdmin) / (1 + M_PI / 2);
     double y = cgdmax - s;
     if (vgd > 0)
-        *capgd = s * tanh(a * vgd) + y;
+        *capgd = 0.5 * (s * tanh(a * vgd) + y);
     else
-        *capgd = s * atan(a * vgd) + y;
-    *capgs = cgs;
+        *capgd = 0.5 * (s * atan(a * vgd) + y);
+    *capgs = 0.5 * cgs;
     *capgb = 0;
 }