ST Life.augmented


Up to 5 W solar battery charger with embedded MPPT based on SPV1040
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The STEVAL-ISV006V2 demonstration board is based on the SPV1040 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 2 A) is reached or the maximum temperature limit (up to 155 °C) is exceeded.

The STEVAL-ISV006V2 demonstration board is supplied by a PV panel with PPKof 200 mW, which can be replaced with PV panels with PPKup to 5 W (VOC < 5 V) depending on application requirements.

The output load is a 220 mF, 5.5 V super-capacitor that can be replaced with lead-acid, NiCd or NiMh rechargeable batteries (max voltage = 5 and > VOCof the selected PV panel).

The demonstration board provides a simple charge status indicator using 2 LEDs, and 3 trimmers are available to allow setup according to the specific application requirements.

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Data Brief

Key Features

  • High-efficiency monolithic step-up DC-DC converter
  • Proprietary “perturb & observe” embedded MPPT algorithm
  • Very low input voltage (down to 0.3 V)
  • Integrated N-channel and P-channel MOSFETs with low RON resistance
  • Overcurrent and overtemperature protection
  • Input reverse polarity protection
  • LED charge status indicator
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1262: Up to 5 W solar battery charger with embedded MPPT based on the SPV1040
3.0 294 KB

Application Notes

Description Version Size
AN3319: STEVAL-ISV006V2: solar battery charger using the SPV1040
8.2 1,141 KB

Presentations & Training Material


Description Version Size
SPV1040: solar battery charger for portable
1.0 346 KB
ST products and solutions for solar energy
5.1 2,135 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ISV006V2 board
1.0 92 KB

Bill of Materials

Description Version Size
3.0 8 KB

Schematic Pack

Description Version Size
STEVAL-ISV006V2 schematics
2.1 34 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISV006V2ActiveSPV1040-86Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA40

(*) 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 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.