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ADP1046A 100Watt
Evaluation board
APPENDIX II – SCHEMATIC (DAUGHTER CARD)
J1
30
29
Analog GND
28
27
26
Inverting Remote Voltage Sense Input
25
None-Inverting Remote Voltage Sense Input
24
OrFET Gate Drive Output
23
OrFET Drain Sense Input
22
Local Voltage Sense Input
21
Power GND
20
None Inverting Differential Current Sense Input
19
Inverting Differential Current Sense Input
18
Synchronous Rectifier Output
17
Synchronous Rectifier Output
16
AC Sense Input
15
Primary Side Differential Current Sense Input
14
PWM Output for Primary Side Switch
13
PWM Output for Primary Side Switch
12
PWM Output for Primary Side Switch
11
PWM Output for Primary Side Switch
10
Auxiliary PWM Output
9
Power Supply On Input
8
Power Good Output (Open Drain)
7
Power Good Output (Open Drain)
6
Flag Input
5
Thermistor Input
4
I2C Serial Clock Input
3
I2C Serial Data Input and Output
2
Analog Share Bus Feedback Pin
1
Share Bus Output Voltage
4
Short trace from pin 25 DGND to pin 2 AGND
ADD
R19 = 10k 1%
3
SHARE O/I
R33, R32 = 2.2k 1%
PGOOD1/2
R14, R15 = 2.2k 1%
VCORE
C26 = 330pF 50V X7R
R3
R4
C10
2
Low Side
4.99k
4.99k
DNI
High Side
110k
110k
DNI
1: R3, R4, R5, R6, R7, R8, R10, R11,R20 ARE 0.1% 25ppm
NOTES:
UNLESS OTHERWISE SPECIFIED.
+12V
+3.3V
+5V
VS3-
VS3+
GATE
VS2
VS1
CS2+
CS2-
C17
DNI
SR2
ACSNS
SR1
C10
ACSNS
100pF
CS1
R1
27K
OUTA
OUTB
R2
C18
2200pF
1k
OUTC
100V
OUTD
OUTAUX
PSON
PGOOD1
PGOOD2
FLAGIN
RTD
SCL
SDA
SHAREi
SHARE0
C13
C16
C17
DNI
DNI
DNI
DNI
33pF 33pF
Figure 75 – Daughter card schematic
R10
11k
R9
DNI
VS2
R11
VS1
1k
CS2-
CS2+
R7
C3
2
11k
DNI
2
R5
C1
C16
11k
DNI
DNI
R3
R8
C4
R4
4.99k
1k
DNI
4.99k
R6
C2
1k
DNI
C13
100pF
CS1
C15
1000pF
+12V
+5V
D1
D2
1N4148
1N4148
+3.3V
C8
0.1uF
R21 5.1K
8
1
IN1
OUT1
7
2
IN2
OUT2
C12
6
3
4.7uF
ERR
NR
5
4
SD
GND
C5
U2
1.0uF
50V
ADP3303
Rev. 1.3 | Page 40 of 55
VS3+
VS3-
RTD
+3.3V
2
C11
0.1uF
C7
DNI
3
C9
4
3
DNI
C14
0.1uF
1
VS2
SHAREI
2
AGND
SHAREO
3
VS1
PGOOD1
U1
4
CS2-
PGOOD2
ADP1046A
5
CS2+
FLAGIN
6
ACSNS
PSON
7
CS1
SDA
8
PGND
SCL
R13
0 Ohm
D6
LED
PGND
AGND
DGND
RED
PRD1386
+3.3V
3
R33
R14
2.2k
2.2k
24
SHAREi
23
SHARE0
22
PGOOD1
21
PGOOD2
20
FLAGIN
19
PSON
18
SDA
17
SCL
R29
R24
2.2k
2.2k
+3.3V
J7
1
+5V
2
SCL
3
SDA
4
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