Download STEVAL-ISV014V1

STEVAL-ISV014V1
Up to 3 W solar and USB battery charger for single-cell Li-Ion and
Li-Po batteries based on the SPV1040, STBC21 and STC3100
Data brief
Features
■
Solar section
– Solar energy harvester with proprietary
“Perturb and Observe” embedded MPPT
algorithm
– Reverse polarity protection for solar panel
connection
■
Battery charging section
– Both linear and quasi-pulse operation, with
programmable charge current (up to 1 A) in
both fast charge and pre-charge mode
– Selectable 4.1 V and 4.2 V output voltage
(±1% accuracy)
– Programmable termination current, precharge mode voltage threshold and charge
time setting by I2C
– Coulomb counter available via I2C
– Status outputs to drive LEDs or host
processor interface
– Charge status LED indicator
■
Battery protection section
– Battery absence detection
– Battery thermal control (monitoring and
protection) by NTC or PTC thermistor
interface
■
5 V USB supply output from external battery
■
RoHS compliant
Description
The STEVAL-ISV014V1 demonstration board
provides a very high level of integration being
based on the ST devices SPV1040 (solar energy
harvester and power optimizer), STBC21 (single
cell Li-Ion battery charger) and STC3100 (gas
gauge).
STEVAL-ISV014V1
USB (type-A connector) compatible supply. The
battery charging status set by STBC21 can be
controlled via I2C. Safety during the battery
charge process is guaranteed by the gas-gauge
controller device STC3100.
When the energy is provided by the solar panel,
the SPV1040 optimizes the power extracted from
the source and boosts the voltage, charging a
440mF super-capacitor, which is connected to the
input stage of the STBC21 by a STS5PF30L Pchannel power MOSFET.
Furthermore, the STEVAL-ISV014V1 can be used
to supply a type-B USB compatible load by an
external Li-Ion battery. In this case, the L6920
voltage boost controller will regulate the battery
voltage up to the 5 V required by the USB
standard.
Finally, the STEVAL-ISV014V1 has a dedicated
charging monitor circuitry implemented by 4 LEDs
and by the TS339 quad comparator.
The STEVAL-ISV014V1 controls the single-cell
Li-Ion battery charging thanks to the STBC21,
which can be supplied by a solar panel or by an
August 2012
Doc ID 022730 Rev 2
For further information contact your local STMicroelectronics sales office.
www.BDTIC.com/ST
1/4
www.st.com
4
2/4
Doc ID 022730 Rev 2
www.BDTIC.com/ST
06
2
K
U&
62 K
2
$.#
N& 42)3),
3--&!
$OUT
6OUT
,8?
06
6).?SNS
#IN
6CELL
)CTRL
)CTRL
433/0
#&
U&
2&
6CTRL
6CTRL6
6OUT6
#OUT
U&
K
K
#
U&
6RS
#
N&
2
K
2
-
40
6RS
#
U&
62SM6 )MAX
2S /HM
2&
6/54?,
306
5
6"!4
/HM
2
U(-(Z
6RS
06
*
37
62
K
2
/HM
433/0
,
K
40
$
2
K
K
#/.
*
2
6?53"
3/4,
5
6REF
$
3403,
K
2
#
N&
K
2
2
2
2
K
2 K
2 K
2
K
6CELL
6REF
2ED,%$
6M!
*
K
2
)/
2/3#
3$!
3#,
/
/
6C
6
6
6
6
5
/
/
6C
6
6
6
6
K
06
6REF
6O?RED?
6REF
6O?RED?
#
N&
#
U&
K
2
K
2
-
2
'?0#(
-
2
3/
5
6##?34"#
-&#
K #
2
',%$
$
6"!4
6"!4
'?0#(
M
2
2
3/ 43
3/PACKAGE
6).
6##
#'
'.$
6"!4
"ATTERY3ECTION
$
',%$
'REEN,%$
6M!
$&.?X
#/.
5
06
$
K
6"!4?3.3
6"!4
.4#
2 /HM 6"!4
$
K
6O?RED?
6O?RED?
$
2,%$
06
34..&,
4
K
2
6O?RED?
2 K
6REF
2
62 -2
K
*
#/.
K
2
$
2,%$
"ATTERY#HARGE-ONITOR
2
K
K
2
K
2
K
U&
#
$
2
K
2
K
2
6/54?,
$
$
U&
#
6/54?306
62%&?34"#
6"!4?3.3
.4#
2
,%$
,%$
)3%4
6"!4
6"!4?3.3
4%-0.4#
2%3
6RS
06
,8?
U(-(Z
#
N&
,
06
$.-
5
6CTRL
)CTRL
)CTRL
8?3(54
06
2
(433/0
6/54?,
#/.
34"#
(433/0
5
Circuit schematic
,
*
'.$
Figure 1.
6/54?,
#
N&
K
2
2%3
2%3
6##
0(#
6#0
Circuit schematic
K
K
#
U&
37 37
&IX6#LOSE
BY2/HM
#
U&
K
2
62%&?34"#
6##?34"#
$ 3403,
1
2
06
)$
6?53"
$
$
6"!4
2
6/54?,
-INI53"
*
Circuit schematic
STEVAL-ISV014V1
!-V
STEVAL-ISV014V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
Changes
19-Jul-2012
1
Initial release.
28-Aug-2012
2
Updated part number on the cover page from STPS5PF30L to
STS5PF30L
Doc ID 022730 Rev 2
www.BDTIC.com/ST
3/4
STEVAL-ISV014V1
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.
© 2012 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
4/4
Doc ID 022730 Rev 2
www.BDTIC.com/ST