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Altera_Forum
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15 years ago

Voltage conversion 3.3v -> 24v

Hello all, I have a DE-2 board and I am looking to control a few PLCs. I need to take the 3.3v and convert it to 24v, as well as, take 24v and convert it to 3.3v. The DE-2 Board is acting like ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

These work nicely for switching higher voltages from FPGA IOs:

http://www.irf.com/product-info/datasheets/data/pvg612.pdf

but they're a little slow for your needs.

Have you though of using a power supply MOSFET driver?

For example, look at page 25 of this schematic:

http://www.ovro.caltech.edu/~dwh/carma_board/gda06rb004_carma_v0.87_dec03.pdf

The Texas Instruments UCC27223 are logic-level input MOSFET drivers. You could use that component, or something similar, to switch 24V pretty rapidly, you'd just need to use MOSFETs with the right voltage rating.

Cheers,

Dave