The microinverter-based architecture is composed of two main functional blocks connected as shown in the picture.

  • The microinverter implements, at panel level, the power conversion stages (DC-DC with MPPT and DC-AC), the communication capability and the connection to the AC grid. In this way, each panel is connected in parallel directly to the AC grid.
  • The data concentrator collects the data (voltage value, current value, etc.) from all the microinverters and sends it to a local or remote monitoring and control access point.

This architecture has the following benefits:

  • more energy production: the MPPT at panel level maximizes system energy production
  • communication and monitoring capabilities at panel level
  • more flexibility: the installed capacity can be expanded over the time
  • the best reliability: the failure of one microinverter does not compromise system energy production

The block diagram will help you make the right choice for each functional block from a wide range of recommended products.


Technical Documentation

Application Notes
Description Version Size
AN4242 AN4242: New generation of 650 V SiC diodes 1.2 2 MB
AN4068 AN4068: ST7580 power line communication system-on-chip design guide 2.0 5 MB

Presentations & Training Material

Description Version Size
Microinverter_marketing_pres 2.2 638 KB
ST products and solutions for solar energy 5.1 2 MB

Publications and Collaterals

Description Version Size
Brochure Power management guide 05.2016 4 MB
Products and solutions for solar energy 1.0 1 MB
Magazine Articles
Description Version Size
DC-DC converter for Hybrid Electric Vehicle and EV 1.0 405 KB
Innovative architectures for solar energy applications : ST microinverter system solution 1.0 616 KB
Innovative architectures for solar energy applications: st microinverter system solution 1.0 614 KB
Monitoring of Physical Activity 1.0 540 KB
ST MEMS accelerometers to meet new Safety and Security requirements in the PV world 1.0 174 bytes
Wireless Gaming platform based on Motion MEMS and ZigBee 1.0 703 KB