ST Life.augmented

STEVAL-ISV009V1

300 W photovoltaic converter demonstration board based on the SPV1020
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The STEVAL-ISV009V1 demonstration board is based on the SPV1020, which is a monolithic DC-DC boost converter designed to maximize the power generated by photovoltaic panels independent of temperature and amount of solar radiation.

The optimization of the power conversion is obtained with embedded logic which performs the MPPT (max power point tracking) algorithm on the PV cells connected to the converter.

One or more converters can be housed in the connection box of the PV panels, replacing the bypass diodes and, thanks to the fact that the maximum power point is locally computed, the efficiency at system level is higher than that of conventional topologies, where the MPP is computed in the main centralized inverter.

For a cost effective application solution and miniaturization needs, the SPV1020 embeds the power MOSFETs for active switches and synchronous rectification, minimizing the number of external devices necessary. Furthermore, the 4-phase interleaved topology of the DC-DC converter eliminates the need for electrolytic capacitors, which would severely limit lifetime.

It works at a fixed frequency in PWM mode, where the duty cycle is controlled by the embedded logic running a “perturb & observe” MPPT algorithm. The switching frequency, internally generated and set by default at 100 kHz, is externally tunable, while the duty cycle can range from 5% to 90% with a step of 0.2%.

Safety of the application is guaranteed by stopping the drivers in case of output overvoltage or overtemperature.

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Data Brief

Key Features

  • PWM mode DC-DC boost converter
  • Duty cycle controlled by MPPT algorithm with 0.2% accuracy
  • Operating voltage range: 0-40 V
  • Overvoltage, overcurrent and overtemperature protection
  • Built-in soft-start
  • Up to 98% efficiency
  • Automatic transition to burst mode for improved efficiency during low solar radiation
  • SPI interface
  • RoHS compliant

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Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB1399: 300 W photovoltaic converter demonstration board based on the SPV1020
1.1 99 KB

Application Notes

Description Version Size
pdf
AN3392: Designing with the SPV1020, an interleaved boost converter with MPPT algorithm
1.0 5,700 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
STEVAL-ISV009V1 gerber files
1.0.0 473 KB

Bill of Materials

Description Version Size
pdf
STEVAL-ISV009V1 BOM
2.0.0 52 KB

Schematic Pack

Description Version Size
pdf
STEVAL-ISV009V1 schematics
2.0.0 64 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISV009V1ActiveSPV1020; SPV1001N30-89Distributor reported inventory date: 2014-11-26
Distributor NameRegionStockMin. order
ARROWOrder NowEUROPE20
Ecopack2-

(*) 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 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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