How to realize isolated gate driver using 1EDN7126GXTMA1?

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wohehe123
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I am designing an isolated gate driver using 6N137 and 1EDN7126GXTMA1, but I'm not sure if it's ok to connect the grounds. Because in the datasheet IN- is connected to SGND while VSS is connected to PGND.

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yifei_y
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250 replies posted 25 likes received 100 solutions authored

Hello,

Both GNDs must be separated.

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wohehe123
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Thanks for answering!

But since I use optocoupler, I already have one isolated ground "GND_DRV", and my isolated DC/DC use this ground too. How can I provide power to the drvier IC 1EDN7126GXTMA1, if the Vss is not connected to this ground, or I don't need an optocoupler anymore? This question troubles me a whole day. I'm a rookie, really appreaciate any reply, thank you

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