Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
March 2017 DocID029888 Rev 2 1/4
For further information contact your local STMicroelectronics sales office
www.st.com
STEVAL-ISB041V1
Li-Ion/Li-Po battery power management evaluation board based on STBC02
Data brief
Features • Charges single-cell Li-Ion/Li-Po batteries
with CC-CV algorithm and charge termination
• Fast charge current programmable from 1 mA to 450 mA
• Pre-charge current programmable from 1 mA to 450 mA
• Adjustable floating voltage up to 4.45 V • Integrated always-on low quiescent LDO
regulator • Battery over-charge and over-discharge
protections • Overcurrent protection • Shipping mode exit input • Integrated dual 3 Ω SPDT load switches • Integrated smart reset / watchdog logic • Single wire control interface • RoHS compliant
Description The STEVAL-ISB041V1 product evaluation board is based on STBC02 battery power management, integrating a linear charger for single-cell Li-Ion batteries with battery protection functions, an LDO regulator, two SPDT load switches and intelligent reset logic.
The device uses a CC / CV algorithm to charge the battery; the fast-charge and pre-charge current can be programmed using an external resistor.
The input supply voltage is used to charge the battery and provide power to the LDO regulator. When an appropriate input voltage is not present and the battery is not empty, the device automatically switches to battery power.
When shutdown mode is activated, the battery power consumption is reduced to less than 100 nA: two embedded 3 Ω SPDT load switches intelligently manage the overall system power consumption. An advanced reset circuit with trigger signal is integrated.
The STEVAL-ISB041V1 can work in standalone mode and a single wire interface can be used to control the STBC02 for full operation. The STEVAL-ISB041V1 evaluation board provides full access to the STBC02 functions through header connectors and can be supplied via a micro-AB USB connector.
Schematic diagram STEVAL-ISB041V1
2/4 DocID029888 Rev 2
1 Schematic diagram
Figure 1: STEVAL-ISB041V1 circuit schematic
1.0u
F
C3
P1
GND
10uF
C1
1.0µ
F
C2
3.3k
R1
33k
R2
GND
GN D
0RR
3
10k
R4
!D
NP
R6
!D
NP
R5
10k
R9
10k/
!DN
PR
1110
0kR
12
470
R7
4.7u
F
C4
I SE T
I PR
E
IN I N_S
GND
GND SW
2_O
B
SW1_
I
SW1_
OB
SW2_
I
SW1_
OA
SW2_
OA
GN D
GND
L DO
SYS_
SSY
S
L DO
LDO
_ S
CHG
CEN
RES
ET_N
OW
RST
_PEN
DIN
G
nRES
ET
SW_S
E L
BATM
S
NTC
BATS
NSF
V
BATM
S2
BATM
S3
GND
BAT
BATS
NS
BAT
GND
BAT_
SBA
T
WAK
E_UP
100k
R14
GND
100k
R10
GND
GND
P9
INF5
SYS
C5
SW1_
IF3
SW1_
OA
E4
SW1_
OB
E3
SW2_
IE2
SW2_
OA
F2
SW2_
OB
F1
ISET
A4
IPR
ED
4
GND A3
AGND B4
WAK
E_UP
D2
BAT
A5BA
TSN
SFV
A2BA
TSNS
B3N
TCD
1
BATM
SC
4
SW_S
ELC
1nR
ESET
C2
RST
_PEN
DIN
GB2
RES
ET_N
OWA1
CEN
B1C
HGE1
LDO
F4IN
E5
SYS
D5
BAT
B5
D3
D3
C3
C3
U1 ST
BC0x
_FC30
_226
9x26
10
SW_S
EL
STB
C02
RS
T_P
EN
DING
nRE
SE
TR
ES
ET_N
OW
C1
B2 C2
A1
!DNP
/10k
R8
!DNP
/10k
R13
LDO
GND
GND
GND
RST_PENDINGnRESETBATMS3BATMS2
1234567
J1
SW_SELCEN
WAKE_UPCHG
GND1
2345
J3
RESET_NOWCEN
CD
GNDIDD
PD
MVB
US
S HIE
L D
J19
!D
NP
C10
!D
NPR
16
GND
GND
IN
GND
BAT
NTC
SYS
INBATS
NSBA
TSN
SFV
LDO
LDO
_S
GND
GND
GND
GND
123
J8
IN_S
123
J9
SYS_
S123
J11
GND
BAT_
S12345
J10
123
J23
J20
GND
J22
GND
J16 LDO
J17 IN
J18
BAT
J21
SYSBA
TMS
ISET
IPR
E
SW1_
ISW
1_O
ASW
1_O
BSW
2_I
SW2_
OA
SW2_
OBGND
123
J7
1234567
J15
GND
12
J13
GND
!D
NP
R18
!DNPC12
GND
!DNPC11
GND
WAK
E_UP
J24
WU
RCQ
1
GSPG1910161115SG
STEVAL-ISB041V1 Revision history
DocID029888 Rev 2 3/4
2 Revision history Table 1: Document revision history
Date Version Changes
20-Oct-2016 1 Initial release.
13-Mar-2017 2 Updated board photo on the cover page.
STEVAL-ISB041V1
4/4 DocID029888 Rev 2
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2017 STMicroelectronics – All rights reserved