Analog Devices EVAL-LT7171-1-AZ User Manual page 11

Evaluation Board User Guide
Schematic Diagram (continued)
VIN_SENSE
E2
+ C68
270uF
EEH-ZK1E271P
GND
E1
FOR EMI PURPOSE ONLY
VEMI
VEMI
2.9V-16V
J1
C98
C108
10uF 1uF
25V 25V
GND 0805
J2
VOUT
1V/40A
VOUT
E18
GND
VSENSEP
E19
R27** 0
C83
VSENSEP
C84
OPT 100uF 100uF
6.3V 6.3V
SENSE+ 1206 1206
E3 R28** 0 OPT
OPT
SENSE-
E4
VSENSEN
VIN
3V3_LDO
3V3_LDO
3V3
**
POPULATE R27/R28 ONLY
POPULATE R58/R59 ONLY
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VIN
+ C69
270uF
OPT
FB1 L5
74279226101 0.47uH
OPT 744373240047
1 2 1
C101 C100 C102 C103 OPT
C99 C104
22uF 22uF
1uF 1uF 1uF 1uF
25V
25V
25V 25V 25V
1210 1210
0402 0402 0402
1
J3 C17 C81
C80 C82 + C74 + C75
470uF 470uF
100uF 100uF 100uF 100uF
6.3V 6.3V 6.3V 6.3V 2.5V 2.5V
1206 1206 1206 1206
1
J4
C85 C72
C86 C73 + C78 + C79 + C70
100uF 100uF 100uF 100uF 470uF 470uF 470uF
6.3V 6.3V 6.3V 6.3V OPT OPT OPT
1206 1206 1206 1206
OPT OPT
U6
1 5
IN VOUT
C39 C9
4.7uF
C8
0.01uF
1uF 3 4
SHDN BYP
LT1761-S5-3.3
VPULLUP
U7
LTC4413-DD
1 10
INA OUTA
C21 2 9
ENBA STAT
R52
4.7uF
3 8 10k
GND NC
4 7
ENBB NC
5 6
INB OUTB
C20
C18 4.7uF
4.7uF
FOR THE BEST OUTPUT ACCURACY
FOR THE BEST EFFICIENCY ACCURACY
RUN
ON
5
OFF
SW1
J7
2
VIN
LGKPWR
ALERTB
GPIO_1
OUTEN_0
OUTEN_1
AUXSCL
AUXSDA
TO DC1613A
VOUT
1
2
3
4
VPULLUP
+ C71
470uF
OPT R3
866
3V3_LDO
/ALERT
VOUT
R2 R5 R8 R9 R1
10k 4.7k 4.7k 10k 6.81k
/FAULT
PGOOD
IOSTEP
SCL
SDA
J5
/ALERT
SHARE_CLK
EVAL-LT7171-1-AZ
VPULLUP
2
RUN
E9
SDA
R14
1M
E6
GND
SDA SCL
3V3
1
AUXP
2
SDA
3
GND
4
SCL
5
6
7
8
9
10
GND
11
12
C31
0.1uF
R13
R6
4.99k
4.99k
U5
1%
1%
8
AUXVCC
A0 VCC
7 EEWP
A1 WP
6 EESCL
A2 SCL
5 EESDA
VSS SDA
24LC025-I/ST
VPULLUP
VPULLUP
R12
R26
866
866
D6 D7
HSMA-C197 HSMA-C197
AMBER AMBER HSMG-C190
PGOOD
/FAULT E14
Q2
1
PGOOD
2N7002
E15
/FAULT
LOAD TRANSIENT CIRCUIT
VOUT
J6
C32
1uF
Q1
C34 C35
PSMN5R4-25YLDX
1uF 1uF
6.3V 6.3V
0402 0402
R10
49.9
R49
1%
10m
SCL /ALERT
E7 E12
/ALERT
EXTERNAL COMPENSATION
ITH
Values TBD
R53
D4 3.3k
GREEN
C47
2200pF
IOSTEP CLK
E13
GND
E11
Rev. A 11 of 13