TIDUEZ8 May 2021
The purpose of this design is to offer an analog front-end solution for isolation barrier monitoring in unearthed industrial low-voltage distribution systems, such as DC fast charging stations or solar string inverters. As per the safety standards, these systems should include equipment for testing the isolation barrier compliant with the IEC 615578-8 standard. For more details on the IEC 615578-8 standard, see the IEC Webstore.
This analog front end was designed to support IEC 615578-8 requirements:
This reference design offers additional advantages such as a reinforced isolated analog front end with no external supply on the secondary. This allows the MCU to sit on the cold side and foster lower power consumption.