Datasheet

Evaluation Board User Guide UG-320
Rev. A | Page 33 of 48
DAUGHTER CARD SCHEMATIC
+3 .3 V
+3
.
3
V
+5
V
+5 V +3 .3 V
+1 2V
+3 .3 V
+5
V
+3 .3 V
+1 2V
S H AR E i
S H
A
R
E
0
P G O O D1
P G O O D2
F LA G IN
P S O N
S
DA
S C L
G A T E
O U T A U X
O U T D
O U T C
O U T B
O U T A
S R 2
S R 1
R T D
V S 3-V S 3+
V S 2
V S 1
C S 2
-
C S 2+
AC S N S
C S 1
S C L
S D A
V S 3-
V S 3+ G AT E
V S 2
V S 1
C S 2+
C S 2-
S R 2
S R 1 AC S N S
C
S
1
O UT A
O UT B
O UT C
O UT
D
O UT AU X
P S O N
P G O O D1
P G O O D2
F LA G IN
R T
D
S C L
S D A
S H AR E i
S H
AR
E 0
50V
ADP 3303
NOTES: UN LE S
S O T HE R W IS E S P E C IF IE D .
1: R 3, R 4, R 5, R 6, R 7, R 8, R 10, R 11, R 20 AR E 0. 1% 25ppm
L ow S ide
High S ide
4. 99k
110k R 3
4. 99k
110k R 4 C 10 C 13 C 16 C 17
33pF 33pF
DN I
DN I
DN I DN I
DN I
DN I
2
2
2
2
P G OO D1/2 V C O R E
R
14, R 15 = 2.2k 1%
C 26 = 33
0pF 50V X 7R
S H A R E O /I ADD
R 33, R 32 = 2. 2k 1%
R 19 = 10k 1%
3
3
3
3
4
S hort tra ce from pin 25 DG N D to pin 2 A G N D
4
RED
D6
L E D
D6
L E D
21
R 10 11k
R 10 11k
C 9 DN I
C 9 DN I
C 17 DN
I
C 17 DN
I
C 7 DN I
C 7 DN I
C 10
100 pF
C 10
100 pF
R 1 5 2. 2kR 1 5 2. 2k
R 13
0
O
hm
R 13
0
O
hm
C 13
100 pF
C 13
100 pF
R 2 0 10 k
R 2 0 10 k
C 6
330 pF
C 6
330 pF
C 15
100 0pF
C 15
100 0pF
R 2 9 2
.
2k
R 2 9 2
.
2k
R
1
4
2. 2k
R
1
4
2. 2k
D2
1
N
4
1
48
D2
1
N
4
1
48
21
C 14 0. 1u
F
C 14 0. 1u
F
R 1 9 10 kR 1 9 10 k
C 2
DN I
C 2
DN I
R 33 2.
2k
R 33 2.
2k
U2 U2
O
U T1
1
O
U
T 2
2
N
R
3
G N D
4
S D
5
E R R
6
I
N 2
7
IN
1
8
J 1J 1
1
2
3
4
5
6
7 8 9
10
11 1
2
13 1
4
15 1
6
17 18
19
2
0
21
22
23
24
25
26
27
2
8
29
30
J 7J 7
1
2
3
4
R 3 2 2. 2k
R 3 2 2. 2k
C 11 0. 1u
F
C 11 0. 1u
F
R 3
4. 99k
R 3
4. 99k
C 1
DN I
C 1
DN I
C 4
DN I
C 4
DN I
C 5
1. 0uF
C 5
1. 0uF
R 6 1k
R 6 1k
U1
ADP 1046
U1
ADP 1046
V S 2
1
A G N D
2
V S 1
3
C S 2 -
4
C S 2 +
5
A C S N S
6
C S 1
7
P
G
N
D
8
S R 1
9
S R 2
10
O U T A
11
O U T B
12
O U T AU X
15
O U T C
13
O U T D
14
G A T E
16
S C L
17
S D A
18
P S O N
19
F L AG IN
20
P G O O D2
21
P G O O D1
22
S H A R E O
23
S H A R E I
24
D G N D
25
V C O R E
26
V D D
27
R T D
28
A D D
29
R E S
30
V S 3-
31
V S 3+
32
33
P A D
R 5
11k
R 5
11k
C 3
DN
I
C 3
DN
I
R 1
27K
R 1
27K
R 2
1k
R 2
1k
R 8
1k
R 8
1k
C 12
4.
7uF
C 12
4.
7uF
C 18
DN I
C 18
DN I
R 4
4. 99k
R 4
4. 99k
R 7
1
1
k
R 7
1
1
k
D1
1N 4
1
48
D1
1N 4
1
48
21
C 8
0
.1
uF
C 8
0
.1
uF
R 2 1 5.
1K
R 2 1 5.
1K
C 16 DN I
C 16 DN I
R 24 2. 2k
R 24 2. 2k
R 1
1
1k
R 1
1
1k
Analog GND
Inverting Remote Voltage Sense Input
Non-Inverting Remote Voltage Sense Input
Non-Inverting Di fferential Current Sense Input
Inverting Di fferential Current Sense Input
Primary Side Di fferential Current Sense Input
PWM Output for Primary Side Switch PWM Output for Primary Side Switch PWM Output for Primary Side Switch PWM Output for Primary Side Switch
Auxiliary PWM Output
Power Supply On Input
Power Good Output (Open Drain) Power Good Output (Open Drain)
Flag Input
Thermistor Input
I2C Serial Clock Input
I2C Serial Data Input and Output
Analog Share Bus Feedback Pin
Share Bus Output Voltage
Synchronous Rectifier Output Synchronous Rectifier Output
OrFE T Gate Drive Output
OrFE T Drain Sense Input
Local Voltage Sense Input
AC Sense Input
Power GND
PGND AGND DGND
10180-075
Figure 77. Daughter Card Schematic