Texas Instruments BQ2573 Series, User Manual, Page: 20 / 27

L1
0.047uF
C15 0.047uF
C16
4
7
,8
1
,2
,3
5
,6
,
Q2
4
7,8
1,2 ,3
5,6 ,
Q1
10nF
50V
C12
0.005
R1
4.99
R11
4.99
R12
10uF
35V
C3
10uF
35V
C4
1uF
C18
3.9
R3
3.9
R4
4
7
,8
1
,2
,3
5
,6
,
Q3
4
7,8
1,2 ,3
5,6 ,
Q4
0.1uF
C27
10uF
C7
1uF
C28
10
R15
10
R16
0.005
R2
1
2
J5
VSYS
PGND
PGND
VBAT
4
7,8
1,2 ,3
5,6 ,
Q5
AON6407
DNP
10uF
C8
10uF
C9
10uF
C10
10uF
C6
10uF
C5
2.2uF
C30
REGN
REGN
1uF
C29
383k
R19
10
R18
220k
R27
10.0k
R32
10.0k
R35
10.0k
R39
1
2
3
J4
Receptacle_3x1
3V3
300k
R7
GND
GND
GND
10.0k
R33
GND
100pF
C37
100pF
C36
30.1k
R34
VIN
PGND
10.0k R25
3V3
VDDA
VDDA
100k
R28
GND
TP22
TP4 TP5
TP9
TP19
TP15
TP21
TP24
TP27
TP29
TP30
TP23
TP34
TP25
TP26
TP28
TP35
TP36
TP38
TP32
15.0k
R23
40.2k R22 4700pF C33
GND
GND
1000pF
50V
C17
10uF
35V
C23
10uF
35V
C24
330pF
C13
DNP
56
R5
DNP
330pF
C14
DNP
56
R6
DNP
1
2
3
4
J2
Receptacle_4x1
680pF
C32
191k
R30
1
2
JP4
1
2
JP2
300k
R24
1CELL 2 CELL 4 CELL 3 CELL
BAT Removal
2.0M
R40
D1
DNP
TP11
TP14
TP7
TP6
TP10
TP13
47uF
C2
DNP
3V3
2.00k
R36
Green
1
2
D4
60V
1
2
3
Q11
GND
PGND
NT1
Net-Tie
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
ILIM_HIZ
ILIM_HIZ
GND
CHG_OK
CHG_OK
PGND
CELL_control
60V
1
2
3
Q12
CELL_control
BAT
PGND
D2 D3
10.0
R38
VBUS
VBUS
0.1uF
C38
0.1uF
C39
IN
2
OUT
1
3
GND
U2
PM-REG-LM3480-SOT3
3V3
TP37
1 2
JP8
BAT
1
2
J6
100k
R9
20k
R14
60V
1
2
3
Q10
PGND
0.1uF
C22
CHG_OK
GND
26V
Z1
PGND
1.0
R13
VIN
4 3
2
Q9A
DCX124EK-7-F
1
6
5
Q9B
DCX124EK-7-F
10.0
R10
PGND
10.0k
R17
3V3
4
7,8
1,2 ,3
5,6 ,
Q7
4
7,8
1,2 ,3
5,6 ,
Q6
470nF
50V
C25 GND
1
2
3
4
J3
0022053041
10uF
C26
300k
R29
33pF
C31
15pF C34
100
R31
DNP
TP33
TP2 TP3
150pF
C20
150pF
C19
3V3
1
2
JP6
GND
TP12
100pF
C35
PGND
TP17
TP16
TP18 TP20
TP31
0.01uF
C41
TP39 TP8
VSYS
VBUS
10uF
35V
C44
10uF
35V
C45
10uF
35V
C42
10uF
35V
C43
PGND
0.01uF
C11
0.033uF
C47
0.033uF
C46
GND
33uF
35V
C48
1
2
J1
10uF
C21
10uF
C40
3.5V to 26V
Input Voltage Range
SYS Output Voltage
BAT Output Voltage
23V MAX
23.16V MAX
33uF
C53
33uF
35V
C49
DNP
33uF
35V
C50
DNP
10uF
C51
10uF
C52
PGND
33uF
C54
DNP
VIN
10uF
C55
BQ25731RSN
VDDA
7
COMP1
16
COMP2
17
SW1
32
SW2
23
HIDRV1
31
HIDRV2
24
BTST1
30
BTST2
25
LODRV1
29
LODRV2
26
BATDRV
21
PROCHOT
11
ACN
2
ACP
3
CELL_BATPRESZ
18
CHRG_OK
4
CMPIN
14
CMPOUT
15
IADPT
8
IBAT
9
ILIM_HIZ
6
OTG/VAP
5
PSYS
10
REGN
28
SCL
13
SDA
12
SRN
19
SRP
20
Thermal_Pad
33
VBUS
1
VSYS
22
PGND
27
U1
150k
R41
33k
R42
1
2
3
4
5
6
7
8
9
1
0
JP3
5 CELL
GND
1 2
3 4
5 6
7 8
9 10
J7
N2510-6002-RB
GND
SDA
SCL
SCL SDA
82k
R20
1.00k
R21
33uF
35V
C56
100k
R44
DNP
10.0k
R45
0
R43
DNP
0
R46
ILIM_HIZ
0.068uF
50V
C57
DNP
HIZ
10A Max
15A MAX
15A MAX
18nF
50V
C59 DNP
18nF
50V
C58 DNP
GND GND
10.0k
R37
DNP
0
R8
GND
OTG
Figure 3-8. BQ25731 EVM Schematic
1. DNP means "Do Not Populate".
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20 BQ2573X Evaluation Module SLUUCB9A – JUNE 2020 – REVISED JANUARY 2021
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