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
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 440mF super-capacitor, which is connected to the input stage of the STBC21 by a STS5PF30L P-channel 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
技术特性
- 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, 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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功能框图
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STEVAL-ISV014V1 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEVAL-ISV014V1 |
Active |
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1000 |
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STEVAL-ISV014V1 |
DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISV014V1 : 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 |
2 |
349KB |
BILL OF MATERIALS
PCB LAYOUTS
SCHEMATIC PACKS
