Fairchild SEMICONDUCTOR RC5040 - Manual (Page 17)

APPLICATION NOTE AN42
17
PC Motherboard Layout and Gerber File
A reference design for motherboard implementation of the
RC5040 and RC5042 along with the Layout Gerber File and
Silk Screen are presented below. The actual PCAD Gerber
File can be obtained from Raytheon Electronics Semicon-
ductor Division’s Marketing Department at (415) 966-7819.
Figure 16. Example of Proper MOSFETs Placements
Good layout
8
7
6
2
11
15
RC5040 RC5040
14
13
12
3
16
1
5
4
Bad layout
“Quiet” Pins =
9
10
17
18
19
20
8
7
6
2
11
15
14
13
12
3
16
1
5
4
9
10
17
18
19
20