10.
Circuit Diagrams and PWB Layouts
10-2-22
B04H, Second source DC-DC converters
19280_022_120322.eps
120322
Second source DC-DC converters
B04H
B04H
2011-12-06
Second source
DC-DC converters
4
8204 000 9231
COMP
FB
SW
BOOT
SS
EN
VIN
GND
GND HS
VIA
VIA
VIA
VIA
VIA
VIA
VIA
VIA
SW
BOOT
EN
VIN
GND
GND HS
VCC
FB
1%
+3V3
68K
3URA
3UR4
1M0
100n
2UR6
3u6
5UR2
+12Vb
+3V3
100n
2UR1
33R
3UR3-2
3UR3-3
33R
IUR4
FUR1
IUR8
22
u
2UR
8
+5V
2UR2
1n0
+5V
2UR9
22
u
2URH
100p
RE
S
3
URF
1
3
K
CUR5
30R
5UR3
IUR9
3UR3-1
33R
GND-3V3r
1n0
2URJ
GND-3V3r
5UR1
30R
IUR0
1M0
3
UR7
IUR3
2URB
10u
5UR6
100n
IURA
12K
1
%
3
UR6
+12Vb
10
u
2UR7
FURA
IURE
RE
S
3
URC
1M0
22K
3
URB
1
%
100n
2UR3
2UR0
1n0
1n0
2UR4
33R
3UR3-4
2UR5
10
u
GND-3V3r
GND-3V3r
GND-3V3r
25
26
11
12
13
14
15
16
17
0
1
8
1
19
20
21
22
2
3
24
4
9
8
3
2
7UR6-2
RT8293AHGSP
7UR6-1
RT8293AHGSP
1
6
7
5
IURB
100n
2URE
22
u
22
u
2URD
2URC
IURF
GND-3V3r
IURC
30R
5UR5
IURK
1%
IURD
3UR5
68K
3
n
3
22
u
2URG
6
8
9
2
3
7
1
2URA
7URA-1
RT8288AZSP
4
5
24
25
26
11
12
13
14
15
16
17
0
1
8
1
19
20
21
22
2
3
IUR2
7URA-2
RT8288AZSP
GND-3V3r
2URF
10n
3V3
DETECT12V