STEVAL-ISB012V1
Battery monitoring system demonstration board based on
the STC3105
Data brief
Features
■
The STC3105 device uses the Coulomb
counter method to track state-of-charge (SOC)
or to track when the battery is charging or
discharging
■
Accurate measurements of the battery voltage
to estimate the battery state-of-charge
■
Battery parameters are sent to the PC via USB
using a virtual COM port and can be observed
using HyperTerminal as well as a GUI
■
The board can also display parameters on the
LCD
■
Charging and discharging status is displayed
by the + and - sign respectively on both the
LCD and LED
■
The board also shows low voltage and SOC
alarms
■
The board can monitor a battery with a capacity
up to +/-10950 mAh
■
RoHS compliant
Description
The STEVAL-ISB012V1 demonstration board
provides a simple, compact solution to monitor
voltage, current, and capacity of single cell Li-Ion
batteries using the STC3105, which has a highly
efficient gas gauge.
The STEVAL-ISB012V1 demonstration board has
an internal charger in order to charge the battery
and can be powered through a USB port or by
using a DC adaptor.
November 2011
Doc ID 022472 Rev 1
For further information contact your local STMicroelectronics sales office.
1/6
www.st.com
6
Circuit schematic
STEVAL-ISB012V1
1
Circuit schematic
Figure 1.
Circuit schematic (1 of 3)
0,&52&21752//(56(&7,21
&
S)
26&B,1
<
0+]
5
0
%227
5
%227
5
26&B287
-7$*B-7&.B3$ -7$*B-7',B3$ -7$*B-7'2B3%
-7$*B-17567B3%
67&B$/0B3%
,&B6&/B3%
,&B6'$B3%
%227
&)*B3%
0(18B3%
*1'
9
&
S)
Q567
&
9
5
0
Q)
6:
8
3$ 3$ 3%
3%
3%
3%
3%
%227
3%
3%
966B
9''B
9
&
Q)
&
Q)
&
Q)
&
Q)
*1'
9%$7
3&B$17B7$03
3&B26&B,1
3&B26&B287
3'B26&B,1
3'B26&B287
1567
670)&7
966$
9''$
3$B:.83
3$
3$
9''B
966B
3%
3%
3%
3%
3%
3$ 3$ 3$ 3$ 3$ 9
86%B38B3&
&)*B3&
'2:1B3&
26&B,1
26&B287
Q567
*1'
9
(17(5B3$
/&'B56B3$
/&'B(B3$
9
9''B
966B
3$
3$
3$
3$
3$
3$
3%
3%
3%
3%
9
*1'
-7$*B-706B3$
86%'3B3$
86%'0B3$
/2$'B6:B3$
3$
83B3$
/&'B'B3%
/&'B'B3%
/&'B'B3%
/&'B'B3%
9
9
-
&)*B3& *1'
&)*B3%
*1'
&21
'
'
5
.
-
9
*1'
/('B3%
/'B/%2B3%
%227
/('B3%
06'B026,B3$ 06'B0,62B3$ 06'B6&.B3$ 06'B166B3$ &+5*B3$ 5
.
9
9
5
&21
5
/('B3%
&21),*85$7,21-803(56
5
0
67&%$77(5<021,725,1*,&
8
67&B $/0
4
675
67&B 6'$
67&B 6&/
5
&
S)
5
N
9,1
6'$
67& ,47
&
S)
5
N
&
Q)
1&
6&/
9&&
&*
9
5
5
5
6:
&*B%
5
PLOOLRKP
'
/('
5
& 0
X)
5
.
9%$7B%
5
N
$/0
*1'
'
9
5
/('B3%
67&B %$7
&DWKRGH
$QRGH
9%$7B%
(;7B&+*
5HI
32:(56(/(&7,21
8
76 ,/7
9
./4%#/..%#4'.$0)./&34#$)2%#4,97 )4(3(5. 42%3)34/2./44(2/5'('.$0,!.%
92/7287387
67&%$77(5<&+$5*(5
&+5*B3$
5
0
5
N
&+5*
352*
*1'
67&B %$7 3$
86%9
8
&+5*B3$
9
*1'
5
N
:$//B$'37
6:
32:(56(/(&7,21
9
9&&
&
X)
9
%$7
&
Q)
9,1
*1'
*1'
67& *5
8
/' $675
'
6736/ 8
9287
9287
9
'
6736/ 8
B 287
!-V
2/6
Doc ID 022472 Rev 1
STEVAL-ISB012V1
Figure 2.
Circuit schematic
Circuit schematic (2 of 3)
!-V
Doc ID 022472 Rev 1
3/6
Circuit schematic
Figure 3.
STEVAL-ISB012V1
Circuit schematic (3 of 3)
!-V
4/6
Doc ID 022472 Rev 1
STEVAL-ISB012V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
23-Nov-2011
1
Changes
Initial release.
Doc ID 022472 Rev 1
5/6
STEVAL-ISB012V1
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY TWO AUTHORIZED ST REPRESENTATIVES, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2011 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
6/6
Doc ID 022472 Rev 1