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Interleaved DC-DC boost converter with built-in MPPT algorithm

The SPV1020 is a monolithic 4-phase interleaved DC-DC boost converter designed to maximize the power generated by photovoltaic panels independent of temperature and amount of solar radiation.

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. As 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 to minimize size, the SPV1020 embeds power MOSFETs for active switches and synchronous rectifiers, minimizing the number of external devices. In addition, the 4-phase interleaved topology of the DC-DC converter obviates the need to use electrolytic capacitors, which may severely limit system 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 from 50 kHz to 200 kHz, while the duty cycle can range from 5% to 90% with a step of 0.2%.

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

Multiple SPV1020s can be used in a panel array with one SPV1020 per panel. Panels can be connected in series, in parallel, or series/parallel combinations.

pdf Please read
Errata Sheet
pdf 下载

Key Features

  • PWM mode DC-DC boost converter
  • Duty cycle controlled by MPPT algorithm with 0.2% accuracy
  • Operating voltage range 6.5 - 40 V
  • Overvoltage, overcurrent, overtemperature protection
  • Interleaved 4-phase topology
  • Built-in soft-start
  • Up to 98% efficiency
  • Power capability 320 W at 40 V output
  • Automatic transition to burst mode for improved efficiency at low solar radiation
  • SPI interface

线路 图表

图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DS6854: Interleaved DC-DC boost converter with built-in MPPT algorithm
4.0 321 KB

Application Notes

描述 版本 大小
AN3392: Designing with the SPV1020, an interleaved boost converter with MPPT algorithm
1.0 5,700 KB
AN3971: STEVAL-ISV005V2: solar battery charger for lead acid batteries based on the SPV1020 and SEA05
2.0 1,542 KB
AN4217: Designing the SPV1020 with serial and parallel output configurations
1.0 2,480 KB

Design Notes & Tips

描述 版本 大小
DN0023: Charging a 12V lead acid battery in solar applications with the SPV1020
1.0 698 KB

Presentations & Training Material


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

Related Tools and Software

Related Tools and Software

产品型号 描述
STEVAL-ISV009V1 300 W photovoltaic converter demonstration board based on the SPV1020
STEVAL-ISV008V1 300 W PV converter demonstration board to be integrated into a photovoltaic panel based on the SPV1020
STEVAL-ISV005V2 240 W photovoltaic battery charger based on the SPV1020

Publications and Collaterals


描述 版本 大小
SPV1020 Solar boost converter
1.0.0 368 KB

样品 & 购买

产品型号 Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Automotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
SPV1020NRNDPowerSSO 36Tube-40125_-4.5Distributor reported inventory date: 2016-02-13
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA4931225
Newark Element14Order NowAMERICA4040
Farnell Element14Order NowEUROPE541

(*) 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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