STEVAL-ISV012V1 STMICROELECTRONICS [STMicroelectronics], STEVAL-ISV012V1 Datasheet

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STEVAL-ISV012V1

Manufacturer Part Number
STEVAL-ISV012V1
Description
Up to 5 W solar battery charger for single-cell Li-ion and Li-Pol batteries based on the SPV1040 and L6924D
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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STEVAL-ISV012V1
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STMicroelectronics
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Features
July 2011
For further information contact your local STMicroelectronics sales office.
SPV1040: solar boost converter with
embedded maximum power point tracking
(MPPT)
– Proprietary “perturb & observe” MPPT
– Up to 95% efficiency
– Very low input voltage (down to 0.3 V)
– Input reverse polarity protection
– Thermal shut-down
– Overcurrent protection
– Enable pin
L6924D: Fully integrated linear charger
solution with power MOSFET, reverse blocking
diode and battery thermal control
– 1% battery voltage regulation accuracy
– Up to 1 A charge current with 7% accuracy
– Closed loop thermal regulation protection
– Low battery leakage current
– Embedded quasi-pulse charging mode
– Selectable 4.1 V and 4.2 V output voltage
– JEITA compliant with external circuit
– Programmable charge, fast charge (up to 1
– Multifunction pin for flexible charge process
– Status outputs to drive LEDs or host
– Battery absence detection
– NTC or PTC thermistor interface for battery
– RoHS compliant
algorithm
for output current control
maximizes charge rate from solar panel
A), pre-charge, termination current, pre-
charge mode voltage threshold, charge
timer
termination
processor interface
temperature monitoring and protection
Up to 5 W solar battery charger for single-cell Li-ion and
Li-Pol batteries based on the SPV1040 and L6924D
Doc ID 018897 Rev 2
STEVAL-ISV012V1
STEVAL-ISV012V1
www.st.com
Data brief
1/7
7

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STEVAL-ISV012V1 Summary of contents

Page 1

... Status outputs to drive LEDs or host processor interface – Battery absence detection – NTC or PTC thermistor interface for battery temperature monitoring and protection – RoHS compliant July 2011 For further information contact your local STMicroelectronics sales office. STEVAL-ISV012V1 STEVAL-ISV012V1 Doc ID 018897 Rev 2 Data brief 1/7 www.st.com 7 ...

Page 2

... The Li-ion battery solar charger with embedded (MPPT) and quasi-pulse charging mode is “best-in-class” in terms of system efficiency, allowing battery charging while maximizing available solar panel power. In the STEVAL-ISV012V1 demonstration board, the L6924D is supplied by the output stage of the SPV1040, which is supplied by a 400 mW PV panel. 2/7 ...

Page 3

... STEVAL-ISV012V1 2 Schematic diagrams Figure 1. L6924D circuit schematic Doc ID 018897 Rev 2 Schematic diagrams 3/7 ...

Page 4

... Schematic diagrams Figure 2. SPV1040, MPPT boost circuit schematic Figure 3. Supply section schematic 4/7 Doc ID 018897 Rev 2 STEVAL-ISV012V1 ...

Page 5

... STEVAL-ISV012V1 Figure 4. µC and battery section Figure 5. L6924, Li-ion battery charger Doc ID 018897 Rev 2 Schematic diagrams 5/7 ...

Page 6

... Revision history 3 Revision history Table 1. Document revision history Date 30-May-2011 21-Jul-2011 6/7 Revision 1 Initial release. Figure 1: L6924D circuit schematic Updated 2 SPV1040, MPPT boost circuit Doc ID 018897 Rev 2 STEVAL-ISV012V1 Changes Figure 2: and schematic. ...

Page 7

... STEVAL-ISV012V1 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. ...

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