International Rectifier IRAUDAMP18, Reference Design

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IRAUDAMP18 REV
1.0
Schematic
+B
VAA
R3
0
4.
7R
C2
5
0.
1u
F
R4
1
1R
C
1
5
1nF
C2
7
0.
1u
F
,100
V
C
las
s D
, A
M
P
1
8 I
R
43
12
S
ch
e
m
a
ti
c
S
C
H
_
4312
R
e
v
1
.2
D1
+B
SD
VC
C
VS
S
R3
1
4.
7R
C2
6
0.
1u
F
R4
2
1R
C1
7
1nF
C1
8
10u
F
,16V
C2
8
0.
1u
F
,100
V
C6 2.
2n
F
,50V
C1
1
2.
2n
F
,5
0
V
C9
2.
2n
F
,50V
C1
4
2.
2n
F
,50V
D2 1
N
41
48
R2
8
4.
7R
D4 1N
41
48
IN-2
3
CO
M
P
2
2
CL
IP
1
NC
30
VP2
24
VS2
25
GND
5
VS
1
20
CSH 2
27
CSH 1
16
VB1
17
IN+
1
8
VN
2
22
NC
29
VP1
19
VS
2
23
COM
15
VS1
18
VS
S
6
IN-1
9
CO
M
P
1
10
IN+
2
4
CS
D
11
FA
U
L
T
12
NC
13
VCC
14
VN
1
21
VB2
26
COM
28
VAA
7
-B
31
O O
IC
1
IR
43
12
C
5
1
0uF
,1
0V
C1
0
10
uF
,1
0
V
R2
7
10
K
VAA
DS
1
DS
2
R2
6
10
K
VAA
D3 1
N
41
48
D5 1N
41
48
C2
0
0.
1u
F
C1
9
0.
1u
F
C1
6
2
2uF
,1
6V
R2
9
10K
DS
3
R3
5
47
0R
1W
1
2
3
MJ
D
4
4
H
1
1
T
4
G
Q1
R3
4
4
.7
k
Z3
11
V
CP
5
22
uF
+B
R45 2.2 k
R43
10, 1 W
LC
H
D6
C
T
_
P
GND
1 2
P1
D7
C3
3
0.
1u
F
, 6
3
V
R46 2.2 k
R44
10, 1W
RCH
C
T
_
P
GND
1 2
P2
C3
4
0.
1u
F
, 6
3
V
D9 D8
C
T
_
S
GND
C1
2
2.
2n
F
,50
V
R1
9
18
0R
R2
4
1
80R
C7
2.
2n
F
,50V
R2
2
18
0R
VS
S
R2
1
18
0R
C1
3
2.
2n
F
,50
V
R2
0
18
0R
R2
3
1
80R
C8
2.
2n
F
,50V
R1 100k
R3 33
0
C1 1n
F
R4 33
0
C2 1n
F R1
1
*3
.0
1k
1
%
R1
5
47
.5
k 1%
R1
2
*3
.0
1k
1
%
R1
6
47
.5
k 1%
CT
_
S
G
N
D
CT
_
S
G
N
D
INP
U
T
GND
R2 100k
R5 33
0
C3 1n
F
R6 33
0
C4 1n
F R1
3
*3
.0
1k
1
%
R1
7
47
.5
k 1%
R1
4
*3
.0
1k
1
%
R1
8
47
.5
k 1%
CT
_
S
G
N
D
CT
_
S
G
N
D
R48 10k, 1/ 2W R49 10k, 1/2W
C3
6
0.
1u
F
,10
0
V
+ -
C3
7
0.
1u
F
,10
0
V
+B
GN
D
+B
GND
1 2
P3
R5
3
10
k
Z5 16V
Z4 33V
R5
1
47k
R5
2
10
k
R5
5
47k
R5
6
10
k
R5
7
47
k
1
2 3
5
4 6
S1 SW SP
D
T
C3
5
0.
1u
F
Q2
MMBT 55 51
Q3
MMBT 555 1
+B
SD
OVP
UVP
+B
GND
GND
OF
F
ON
C
T
_
S
GND
C
T
_
P
GND
CT
_
P
G
N
D
GN
D
GND
IN
P
U
T
GND
R5
0
10
R
0
C
T
_
P
GND
GN
D
R8
22
0R
1W
R7
22
0R
1W
Z1
5.
1V
GN
D
Z2
5.
1V
+B
R4
7
NM
GN
D
+B
GN
D
GN
D
R2
5
47
K
D1
0
L1
22
uH
L2
22
uH
C2
1
0.
1u
F
,16
V VC
C
R3
2
2.
7K
R3
3
2.
7K
C3
1
0
.4
7uF
, 4
00V
C3
2
0
.4
7uF
, 4
00V
2
1
3
5 4
CN
1
CP
1
2.
2u
F
CP
2
2.
2u
F
CP
3
2.
2uF
CP
4
2.
2uF
C3
8
2
200
uF
, 25
V
C3
9
2
200
uF
, 25
V
18V
-31V
V
e
rs
io
n
Fig 8