Texas Instruments TPS65987-90, User Manual, Page: 11 / 25

GND
GND
GND
3
1
2
Q5
22µF
C31
10µF
C42
3
1
2
4
5
V+
V-
U6
3
1
2
Q6
GND
GND
10µF
C40
GND
10µF
C41
22µF
C30
GND
DRAIN1
DRAIN2
SYS_PWR
GND
LDO_3V3
LDO_1V8
P5V0
10µF
C38
10µF
C37
GND GND
P3V3
PP_HV1
GND
VBUS
VBUS
GND
GND
PP_EXT2_EN
LDO_3V3
GND
3
1
2
Q5
22µF
C31
3
1
2
4
5
V+
V- V-
U6
3
1
2
Q6
GND
22µF
C30
GND
SYS_PWR VBUS
GND
GND
PP_EXT2_EN
LDO_3V3
External Power Path (PD Controller )
GND
GND
10µF
C42
GND
10µF
C40
GND
10µF
C41
DRAIN1
DRAIN2
GND
LDO_3V3
LDO_1V8
P5V0
10µF
C38
10µF
C37
GND GND
P3V3
PP_HV1
GND
VBUS
USB PD Power Path
VAR_DCDC
PP_CAB_87
22µF
C39
GND
PP_HV2
White
1
2
D16
GND
0.1µF
C35
100k
R62
DNP
10.0k
R66
10.0k
R60
10.0k
R57
10.0k
R55
1.00k
R61
10.0k
R54
DNP
10.0k
R56
DNP
576k
R65
0.1µF
C34
DNP
0.1µF
C33
1µF
C36
2
1
7,8
Q4A
4
3
5,6
Q4B
60.4k
R59
60.4k
R58
10.0k
R63
10.0k
R64
0.1µF
C32
0 R52
DNP
0 R53
0 R67
DNP
0
R68
DNP
GND
0 R131
P3V3
LDO_1V8
35
LDO_3V3
9
DRAIN1
15
PP1_CABLE
25
GND
46
PP_HV1
12
PP_HV1
11
PP_HV2
1
PP_HV2
2
VBUS1
13
VBUS1
14
VBUS2
3
VBUS2
4
VIN_3V3
5
DRAIN2
56
DRAIN2
57
DRAIN2
7
DRAIN1
8
DRAIN1
19
DRAIN1
58
DRAIN2
52
GND
51
GND
20
GND
59
TPS65987DDHRSHR
U4B
www.ti.com
Schematic
11
SLVUBF3A – May 2018 – Revised August 2018
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TPS65987-90 Evaluation Module
Figure 7. USB PD Power Paths