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300 W PV converter demonstration board to be integrated into a photovoltaic panel based on the SPV1020

The STEVAL-ISV008V1 demonstration board contains 3 SPV1020s in the same PCB and is suitable for distributed PV panels with 3 isolated strings. The outputs of the SPV1020s can be connected in parallel (STEVAL-ISV008v1 default setting) or in series, despite the pairs of independent inputs. For the STEVAL-ISV008v1 only the output parallel connection is allowed.

The SPV1020 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 (maximum 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, because 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 miniaturized system, the SPV1020 embeds the Power MOSFETs for active switches and synchronous rectification, minimizing the number of external devices. Furthermore, the 4-phase interleaved topology of the DC-DC converter avoids the use of electrolytic capacitors, which would severely limit the lifetime.

The SPV1020 operates at 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 adjustable. The duty cycle can range from 5% to 90% with a resolution of 0.2%.

Safety of the application is guaranteed by stopping the drivers in the 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, overtemperature protections
  • Built in soft-start
  • Up to 98% efficiency
  • Automatic transition to burst mode for improved efficiency at low solar radiation
  • SPI interface
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB1291: 300 W PV converter demonstration board to be integrated into a photovoltaic panel based on the SPV1020
2.0 102 KB

Application Notes

描述 版本 大小
AN4217: Designing the SPV1020 with serial and parallel output configurations
1.0 2,480 KB

Presentations & Training Material


描述 版本 大小
ST products and solutions for solar energy
5.1 2,135 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
STEVAL-ISV008V1 gerber files
1.0 1,374 KB

Bill of Materials

描述 版本 大小
2.0 54 KB

Schematic Pack

描述 版本 大小
STEVAL-ISV008V1 schematics
1.0 64 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISV008V1NRNDSPV1020-134Distributor reported inventory date: 2015-09-01
Distributor NameRegionStockMin. order

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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