Data brief

For further information contact your local STMicroelectronics sales office.

October 2011

Doc ID 018650 Rev 3

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STEVAL-ISV006V2

Up to 5 W solar battery charger with embedded

MPPT based on the SPV1040

Features

converter

MPPT algorithm

Description

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

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

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.

STEVAL-ISV006V2

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