DRV8350: Can I use the DRV835X VGLS as source for another FET gate driving ?

hyungseok%20son

Part Number: DRV8350

I need 11V for another FET gate driving.

so can I use the VGLS Source for this?

Its current would be 2mA.

0 Adam Sidelsky over 5 years ago

Hyungseok,

Thanks for posting on the MD forum!

Could you show me a schematic of the setup you are proposing?

Regards,

-Adam

0 hyungseok%20son over 5 years ago in reply to Adam Sidelsky

This is my DRV8350(Smart Gate Driver) concept.

I want to know basically the possible of VGLS external supply.

0 Adam Sidelsky over 5 years ago in reply to hyungseok%20son

Hyungseok,

Unfortunately not, the VGLS circuit is designed to only drive the DRV835x FETs and does not have enough current to drive external loads.

I would recommend using the DRV835xR variant so that you get an additional Buck which you can use for the purpose above.

Regards,

-Adam

0 hyungseok%20son over 5 years ago in reply to Adam Sidelsky

Adam. thank you for your reply

adding your answer,

If the VGLS load current is small, is it also not available?

External load current might be Max 2mA and all of VGLS current will be not over 25mA.

0 Adam Sidelsky over 5 years ago in reply to hyungseok%20son

Hyungseok,

I still don't think this is the best plan but you could try it if you can ensure that the VGLS current will not violate the DRV spec.

Regards,

-Adam

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