Fairchild FSB44104A, Руководство пользователя

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AN-9111 APPLICATION NOTE
© 2015 Fairchild Semiconductor Corporation www.fairchildsemi.com
Rev. 1.1
• 6/26/15
20
7.2. PCB Layout Guidance
B
R
3
U V
W
P N
F .
FSB44104A
XXX EXX
33uF
35V
33uF
35V
33uF
35V
D
1
D
2
D
3
2
0
R
2
0
R
2
0
R
B
R
1
B
R
2
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
2
0
2
G
N
D
+
1
5
V
+
5
V
V
F
O
V
IN
(W
L
)
V
IN
(V
L
)
V
IN
(U
L
)
V
IN
(W
H
)
V
IN
(V
H
)
V
IN
(U
H
)
+ -
+ -
A
m
p
li
fi
e
r
C
o
m
p
a
ra
to
r
A
N
D
g
a
te
V U
It
i
s
re
c
o
m
m
e
n
d
e
d
t
o
c
o
n
n
e
c
t
c
o
n
tr
o
l
G
N
D
a
n
d
P
o
w
e
r
G
N
D
a
s
sh
o
rt
a
s
p
o
ss
ib
le
P
la
c
e
s
u
n
b
b
e
r
c
a
p
a
c
it
o
r
b
e
tw
e
e
n
P
a
n
d
N
,
a
n
d
c
lo
se
ly
t
o
t
e
rm
in
a
ls
Is
o
la
ti
o
n
d
is
ta
n
c
e
b
e
tw
e
e
n
h
ig
h
v
o
lt
a
g
e
b
lo
c
k
a
n
d
l
o
w
v
o
lt
a
g
e
b
lo
c
k
sh
o
u
ld
b
e
k
e
p
t
T
h
e
V
IN
R
C
f
ilt
e
r
sh
o
u
ld
b
e
p
la
c
e
d
t
o
S
P
M
a
s
c
lo
se
a
s
p
o
ss
ib
le
C
a
p
a
c
it
o
r
sh
o
u
ld
b
e
lo
c
a
te
c
lo
se
ly
t
o
te
rm
in
a
ls
o
f
S
P
M
W
ir
in
g
b
e
tw
e
e
n
N
U
,
N
V
,
N
W
a
n
d
s
h
u
n
t
re
si
st
o
r
sh
o
u
ld
b
e
a
s
sh
o
rt
a
s
p
o
ss
ib
le
C
S
C
w
ir
in
g
s
h
o
u
ld
b
e
a
s
sh
o
rt
a
s
p
o
ss
ib
le
C
o
n
n
e
c
t
C
S
C
f
ilt
e
r’
s
c
a
p
a
c
it
o
r
to
c
o
n
tr
o
l
G
N
D
(n
o
t
to
p
o
w
e
r
G
N
D
)
S
P
M
4
5
L
d
e
si
g
n
f
o
r
P
C
B
l
a
yo
u
t
Figure 25. Print Circuit Board (PCB) Layout Guidance for the Motion SPM
®
45L series