STMicroelectronics AN3215 Application Note: 3 kW Fixed Off Time Boost for Solar Applications

The application note describes the modifications implemented on the STEVAL- ISF001V1 demonstration board, originally designed to work as a PFC rated for a power of 3 kW, to be used as a front-end boost stage for photovoltaic applications.

Brand: STMicroelectronics
Document type: Application Note
Language: English
Pages: 15
File format: PDF
File size: 332 KB
Published: 06 August, 2012
Updated: 30 September, 2023
MD5 checksum: BC9C8205E4419E6D70279A5FAE1B8E03
PDF: STMicroelectronics AN3215 Application Note: 3 kW Fixed Off Time Boost for Solar Applications PDF

About this manual

The document details how to modify an existing demonstration board, originally designed as a Power Factor Correction (PFC) stage, into a front-end boost stage specifically for solar energy systems. This configuration allows the system to boost variable DC voltage from photovoltaic strings to a fixed 400 Vdc bus required by inverters.

What's inside

FOT boost for solar front-end applications
Fixed off time boost
Technical specifications and design rules
Circuital modifications and schematic
Lab test and measurements

Specifications

Input voltage range	190 to 350 Vdc
Output working voltage	400 Vdc
Maximum output power	3000 W
Output voltage ripple	5%
Maximum switching frequency	65 kHz

Frequently asked questions

What is the maximum output power of the 3 kW boost power board?

The maximum output power is 3000 W.

What is the required input voltage range for the boost converter?

The input voltage must be between 190 Vdc and 350 Vdc.

What is the fixed output working voltage for the system?

The output working voltage is fixed at 400 Vdc.

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