diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index 50433d58..00000000
--- a/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.bck
-*.bak
diff --git a/library/dc-dc.dcm b/library/dc-dc.dcm
index a2ace466..ef2af68a 100644
--- a/library/dc-dc.dcm
+++ b/library/dc-dc.dcm
@@ -64,6 +64,11 @@ K DC-DC Step-Down Switching Regulator
 F http://rohmfs.rohm.com/en/products/databook/datasheet/ic/power/switching_regulator/bd9778f-e.pdf
 $ENDCMP
 #
+$CMP BD9G341EFJ
+D 12V～76V input voltage range 3A output current, 1ch Buck Converter Integrated FET
+F http://rohmfs.rohm.com/en/products/databook/datasheet/ic/power/switching_regulator/bd9g341efj-e.pdf
+$ENDCMP
+#
 $CMP GL2576-12SF8DR
 D GL2576-12SF8DR, 12V 3A, 52KHz Step Down Converter, SO8
 K 12V 3A 52KHz Buck DC/DC
diff --git a/library/dc-dc.lib b/library/dc-dc.lib
index 938639bd..4955935c 100644
--- a/library/dc-dc.lib
+++ b/library/dc-dc.lib
@@ -131,6 +131,26 @@ X EN/SYNC 7 -500 -200 150 R 40 35 1 1 P
 ENDDRAW
 ENDDEF
 #
+# BD9G341EFJ
+#
+DEF BD9G341EFJ U 0 40 Y Y 1 F N
+F0 "U" 0 400 60 H V C CNN
+F1 "BD9G341EFJ" 0 -400 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+S -250 350 250 -350 0 1 0 N
+X LX 1 450 50 200 L 50 50 1 1 O
+X GND 2 -450 -250 200 R 50 50 1 1 W
+X VC 3 450 -250 200 L 50 50 1 1 I
+X FB 4 450 -150 200 L 50 50 1 1 I
+X RT 5 -450 -50 200 R 50 50 1 1 I
+X EN 6 -450 50 200 R 50 50 1 1 I
+X BST 7 450 250 200 L 50 50 1 1 I
+X VCC 8 -450 250 200 R 50 50 1 1 W
+ENDDRAW
+ENDDEF
+#
 # GL2576-3.3SF8DR
 #
 DEF GL2576-3.3SF8DR U 0 40 Y Y 1 F N