Relay output from MCU with enhanced safety level

jeudi 4 janvier 2018

Hello, guys, first topic in here, please be kind. The background for question: I want to do a relays output with enhanced safety level (redundancy and EDM).

For that, I plan to use two force-guided relays driven each by N-channel MOSFETs. However, I'm wondering if I can use only one MCU outputs to drive these two MOSFETs or if I should use one MCU output by MOSFET.

Can I assume the MCU transistor output will never be shorted when used to...

Relay output from MCU with enhanced safety level

Relay output from MCU with enhanced safety level

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