ST Life.augmented


High efficiency solar battery charger with embedded MPPT
  • active Active

The SPV1040 device is a low power, low voltage, monolithic step-up converter with an input voltage range from 0.3 V to 5.5 V, and is capable of maximizing the energy generated by even a single solar cell (or fuel cell), where low input voltage handling capability is extremely important.

Thanks to the embedded MPPT algorithm, even under varying environmental conditions (such as irradiation, dirt, temperature) the SPV1040 offers maximum efficiency in terms of power harvested from the cells and transferred to the output.

The device employs an input voltage regulation loop, which fixes the charging battery voltage via a resistor divider. The maximum output current is set with a current sense resistor according to charging current requirements.

The SPV1040 protects itself and other application devices by stopping the PWM switching if either the maximum current threshold (up to 1.8 A) is reached or the maximum temperature limit (up to 155 °C) is exceeded.

An additional built-in feature of the SPV1040 is the input source reverse polarity protection, which prevents damage in case of reverse connection of the solar panel at the input.

pdf Please read
Errata Sheet
pdf データシート

Key Features

  • 0.3 V to 5.5 V operating input voltage
  • 140 mΩ internal synchronous rectifier
  • 120 mΩ internal power active switch
  • 100 kHz fixed PWM frequency
  • Duty cycle controlled by MPPT algorithm
  • Output voltage regulation, overcurrent and overtemperature protection
  • Input source reverse polarity protection
  • Built-in soft-start
  • Up to 95% efficiency
  • 3 mm x 4.4 mm TSSOP8 package




Technical Documentation

Product Specifications

Description Version Size
DS6991: High efficiency solar battery charger with embedded MPPT
5.0 966 KB

Application Notes

Description Version Size
AN3319: STEVAL-ISV006V2: solar battery charger using the SPV1040
8.2 1,141 KB
AN4050: STEVAL-ISV012V1: lithium-ion solar battery charger
2.0 1,169 KB
AN4123: STEVAL-ISV015V1 up to 2.5 W solar USB charger
2.0 990 KB

Design Notes & Tips

Description Version Size
DN0012: Boost converter with MPPT drives isolated solar panel loads
1.0 311 KB

Presentations & Training Material


Description Version Size
SPV1040: solar battery charger for portable
1.0 346 KB

Related Tools and Software

Related Tools and Software

製品型名 Description
STEVAL-ISV012V1 Solar battery charger for Li-Ion batteries
STEVAL-ISV006V2 Up to 5 W solar battery charger with embedded MPPT based on SPV1040
STEVAL-ISV015V1 Up to 2.5 W solar USB supply based on the SPV1040 and LD39050

Publications and Collaterals


Description Version Size
High-efficiency solar battery charger
2.0.0 221 KB

サンプル& 購入

製品型名 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
SPV1040TActiveTSSOP8Tube-40125_-1.25Distributor reported inventory date: 2015-10-02
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA17132000
SPV1040TTRActiveTSSOP8Tape And Reel-40125_-1.25Distributor reported inventory date: 2015-10-02
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA10004000

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(**)弊社ホームページで入手できるMaterial Declaration(材料宣誓書)のフォームは、各パッケージ・タイプで最も一般的に使用されるパッケージに基づいた包括的な文書です。そのため、特定のデバイスについて100%正確ではない可能性があります。特定のデバイスに関する情報については、 弊社セールスオフィス にお問合せ下さい。
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