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-
Active
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).
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 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 440 mF super-capacitor, which is connected to the input stage of the STBC21 by a STPS5PF30L P-channel Power MOS.
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.
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Datasheet
Key Features
- Solar section
Solar energy harvester with proprietary “Perturb & 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, pre-charge 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
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Design Resources
TopTechnical Documentation
Product Specifications
| Description | Version | Size |
|---|---|---|
DB1537: 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
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2.0 | 349 KB |
Application Notes
| Description | Version | Size |
|---|---|---|
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AN3358: Turbo2 600 V diodes: optimized solutions for PFC and other applications
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1.0 | 228 KB |
Hardware Resources
Board Manufacturing Specification
| Description | Version | Size |
|---|---|---|
STEVAL-ISV014V1 gerber files
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1.0.0 | 607 KB |
Bill of Materials
| Description | Version | Size |
|---|---|---|
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STEVAL-ISV014V1 BOM
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2.0.0 | 73 KB |
Schematic Pack
| Description | Version | Size |
|---|---|---|
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STEVAL-ISV014V1 schematics
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2.0.0 | 82 KB |
Sample & Buy
Top| Part Number | Marketing Status | Core Product | Order From ST | Unit Price (US$)* @ | Distributor Availability | RoHS Compliance Grade | Download Material Declaration** |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-ISV014V1 | Active | SPV1040; STBC21; ST3100 | 141.54 |
| Ecopack2 | - | ||||||||||||||||
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors (**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices. |
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