High efficiency solar battery charger with embedded MPPT

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.

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

Circuit Diagram

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Design

Technical Documentation

Product Specifications
Description Version Size
DS6991 DS6991: High efficiency solar battery charger with embedded MPPT 5.0 965 KB
Application Notes
Description Version Size
AN3319 AN3319: STEVAL-ISV006V2: solar battery charger using the SPV1040 8.2 1 MB
AN4050 AN4050: STEVAL-ISV012V1: lithium-ion solar battery charger 2.0 1 MB
Design Notes & Tips
Description Version Size
DN0012 DN0012: Boost converter with MPPT drives isolated solar panel loads 1.0 311 KB

Presentations & Training Material

Presentations
Description Version Size
SPV1040: solar battery charger for portable 1.0 345 KB

Publications and Collaterals

Brochures
Description Version Size
Brochure Power management guide 05.2016 4 MB

Tools and Software

Evaluation Tools
Solution Evaluation Tools
eDesignSuite Support & Community



Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
SPV1040T TSSOP8 Tube -40 125 Active 1.25 1000 NEC EAR99 PHILIPPINES MORE INFO DISTRIBUTOR AVAILABILITY
SPV1040TTR TSSOP8 Tape And Reel -40 125 Active 1.25 1000 NEC EAR99 PHILIPPINES MORE INFO DISTRIBUTOR AVAILABILITY
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(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SPV1040T ActiveTSSOP8IndustrialEcopack2 0 0
SPV1040TTR ActiveTSSOP8IndustrialEcopack2 0 0
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(**) 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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