Isolation Device Selection for Industrial Automation White Paper

2020-12-24
As ef f orts to protect the environment have advanced, the use of inverters in industrial applications and green energysystems have continued to grow rapidly as a w ay to achieve low-pow er motor control and reduce pow er conversion loss. These inverters comprise high-voltage circuit blocks and low-voltage c irc uit bloc ks of control. Elec tric is olation is needed betw een these tw o c irc uit blocks. This document outlines issues of isolation device selection and correspondence. It w ill also discuss the latest photocouplers f rom Renesas w ith an introduction of the RV1S9x60A as an example.
Industrial Automation equipment such as AC servos, general-purpose inverters and robot controllers, and green energy systems like solar inverters, w ind inverters and battery systems require low er pow er consumption and higher speed communication due to increased data volume needed f or control. On the other hand, the noise environment is more severe because the pow er devices like IGBTs and SiC MOSFETs provide higher speed s w itc hing. In addition, it is necessary to meet saf ety and size requirements. These situations make it dif f icult to select isolation devices. This document w ill discuss the isolation requirements of industrial automation equipment and green energy systems, and introduce the RV1S9x60A f rom Renesas, w hich is used f or communication betw een microcontrollers (MCUs) and I/O.

Renesas

RV1S9060ARV1S9160ARV1S9960ARV1S9x60ARV1S9060RV1S9x60

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microcontrollersMCUsphotocoupler

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White Paper

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LSO5;SO5;LSDIP8

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2020/09/27

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