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High Voltage General Purpose Drive (GPD) with Hall-Effect Current Sensor

This document provides a reference solution for interfacing the TLI4971 Hall Effect current sensor in the GPD to measure the motor current for better performance and accuracy. The following key aspects are addressed: − Hall Sensor measurement principle − Isolation coordination scheme − Circuit 2 Go − Layout 2 Go − Supply requirements / Scheme − EMI/EMC recommendations − PCB stack-up influence on sensitivity − Cooling strategy − Applicable standards − Stray field suppression − Signal conditioning/guarding Also, this document describes how the high-side in phase current sensing is best choice when compared with the other measurement techniques. As the application is cost sensitive, the document gives a guidance on how to implement the minimum needed protection circuit to design the PCB (printed circuit board).

• 1.50 MB
• 12/02/2020