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3.3
Schematic
Figure 7
shows the EVM schematic.
JP1
VIN
C42
10µF
TP4
Q5
Q6
VIN
J1
1,2,3
1,2,3
7,8
7,8
R3
R4
5,6,
5,6,
3.9
3.9
PWRGND
Z1
26V
PGND
C18
1µF
Input Voltage Range
3.5V to 24V
C22
R9
6A Max.
R10
PGND
0.1µF
100k
10.0
PGND
PGND
R14
20k
Q9A
DCX124EK-7-F
3V3
PGND
R17
Q9B
10k
DCX124EK-7-F
CHG_OK
Q10
PGND
2N7002ET1G
60V
GND
SLUUBG6 – May 2017
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R1
TP1
0
C1
C43
15pF
10µF
Q1
GND
R2
PGND
1,2,3
7,8
0.01
C12
C3
C4
Q2
5,6,
0.01µF
10µF
10µF
C13
2
C17
330pF
JP7
PGND
PGND
1nF
C45
R5
C19
10µF
56
R12
PGND
C23
C24
C44
R13
4.99
150pF
10µF
10µF
10µF
1.0
C25
PGND
0.47µF
VIN
R11
PGND
PGND
4.99
C47
TP10
C11
GND
TP13
0.033µF
C46
VBUS
0.01µF
0.033µF
TP16
TP17
GND
VDDA
TP19
R18
REGN
10.0
C29
ILIM_HIZ
1µF
C31
R19
TP22
383k
ILIM_HIZ
JP5
33pF
GND
C33
1800pF
R22
40.2k
D5
3V3
R25
10.0k
R26
3V3
C35
GND
TP23
R27
383k
30V
100pF
220k
TP25
ILIM_control
TP26
JP6
TP28
GND
R31
3V3
100
R32
R33
R35
10.0k
10.0k
10.0k
4
3
2
1
CHG_OK
J3
GND
ILIM_control
J2
TP34
1
TP35
2
3V3
VSYS
3
4
CELL_control
R37
ED555/4DS
R39
10.0k
J4
10.0k
TP36
R41
1
2.0M
2
TP38
3
ED555/3DS
R42
300k
GND
CHG_OK
GND
Figure 7. bq2570x EVM Schematic
Copyright © 2017, Texas Instruments Incorporated
TP2
TP3
L1
Q4
1,2,3
7,8
2.2µH
Q3
5,6,
C14
C15
C16
0.047µF
0.047µF
330pF
TP6
TP7
R6
U1
C20
56
30
25
BTST1
BTST2
150pF
32
23
SW1
SW2
PGND
29
26
LODRV1
LODRV2
TP11
31
24
HIDRV1
HIDRV2
TP14
1
22
VBUS
VSYS
2
21
ACN
BATDRV
3
20
ACP
SRP
7
19
VDDA
SRN
TP21
C30
REGN
28
REGN
6
ILIM_HIZ
2.2µF
C32
PGND
R23
16
17
COMP1
COMP2
10.0k
680pF
C34
15pF
11
GND
PROCHOT
18
CELL_BATPRES
13
SCL
TP27
12
8
SDA
IADPT
CELL_control
TP29
4
9
CHRG_OK
IBAT
R30
TP30
C36
C37
137k
5
10
100pF
EN_OTG
PSYS
100pF
R34
15
27
CMPOUT
PGND
30.1k
TP32
14
33
CMPIN
PAD
BQ25700ARSNR
TP40
TP39
TP31
NT1
TP33
Net-Tie
3V3
PGND
GND
R36
BAT
2.00k
D4
Green
Q11
60V
GND
Bill of Materials, Board Layout, and Schematics
TP5
VSYS
C2
C41
C5
C6
C7
C8
C9
C10
C21
C40
47µF
10µF
10µF
10µF
10µF
10µF
10µF
10µF
10µF
10nF
TP9
Q7
BAT
R8
0.01
C27
C26
10µF
TP12
0.1µF
C28
R15
R16
TP15
1µF
10
10
PGND
TP18
TP20
VDDA
R20
120k
R21
64.9k
R24
280k
TP24
JP2
JP3
All JP2,3,4 off: 1CELL
Q12
Only JP2 on: 2 CELL
R28
R29
60V
Only JP3 on: 3 CELL
100k
300k
Only JP4 off: 4 CELL
JP4
JP4 on: BAT Removal
GND
D2
D3
VBUS
30V
R38
30V
U2
10.0
LM3480IM3-3.3/NOPB
TP37
2
1
IN
OUT
3V3
GND
C38
C39
0.1µF
0.1µF
JP8
PGND
Copyright © 2017, Texas Instruments Incorporated
bq2570x Evaluation Module
VSYS
C48
PWRGND
47µF
J6
SYS Output Voltage
19.36V MAX
PGND
8A Max.
VBAT
PWRGND
D1
J5
20V
BAT Output Voltage
19.2V MAX
8A Max.
PGND
13
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