15v to 3.3v level shifter

Nandu K

Other Parts Discussed in Thread: CD40109B

Dear all,

I have a 15v error signal from an open drain pin of a gate driver which need to be interfaced to 3.3v level controller. Is there any specific level shifters for 15v to 3.3v or 5v conversion. Any design examples available for the same will be helpful.

Thanks,

Nandu

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 316920 points

If the signal is connected only to your controller, just change the pull-up resistor to 3.3 V.

If the signal's high level must stay at 15 V, use the CD40109B.

0 Nandu K over 2 years ago in reply to Clemens Ladisch

Prodigy 60 points

Dear Clemens,

This 15v pull up is already done inside the gate driver which cant be changed due to casing. That is why i have to change the level to 3.3v externally.Is it possible.

Thanks

Nandu

0 Clemens Ladisch over 2 years ago in reply to Nandu K

Guru 316920 points

Yes, this is possible. See the second sentence of my first answer.

Logic

Logic forum

15v to 3.3v level shifter