SPV1040

High efficiency solar battery charger with embedded MPPT

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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, capable of maximizing the energy generated by 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 on 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
TSSOP8 package 3x4.4 mm

Circuit Diagram

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Resources

Technical Documentation

Product Specifications

	Description	Version	Size
	DS6991: High efficiency solar battery charger with embedded MPPT	7.0	926 KB

Application Notes

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

Design Notes & Tips

	Description	Version	Size
	DN0012: Boost converter with MPPT drives isolated solar panel loads	1.1	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	09.2017	3 MB

Tools and Software

Evaluation Tools

Solution Evaluation Tools

Part Number	Manufacturer	Description
STEVAL-ISV006V2		Up to 5 W solar battery charger with embedded MPPT based on SPV1040
STEVAL-ISV012V1	ST	Solar battery charger for Li-Ion batteries

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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 : Product is in volume production	1.25	1000	NEC	EAR99	PHILIPPINES	MORE INFO		DISTRIBUTOR AVAILABILITY
SPV1040TTR	TSSOP8	Tape And Reel	-40	125	Active : Product is in volume production	1.25	1000	NEC	EAR99	PHILIPPINES	MORE INFO		DISTRIBUTOR AVAILABILITY

(*) 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	Active	TSSOP8	Industrial	Ecopack2
SPV1040TTR	Active	TSSOP8	Industrial	Ecopack2

(**) 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.