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What is the controller transfer function of the the L6591? Can it be used in full bridge configuration safely?

TSimp.1
Associate

Hello,

I am working on closing the loop on a system I am designing, and I am not able to determine the transfer function of the the L6591 from any literature you have, and it is not yet supported by your edseign suite software.

I was hoping you could point me to the right right direction as far as the COMP pin input is concerned....is it just a unity gain input? Is there any error amplifier gain/phase changes I need to be aware of, or is all that accomplished by the recommended external compensation circuit?

Also, I am planning on utilizing this chip in a full-bridge implementation by having the drive outputs drive opposing legs of the H-bridge, do you see any problems arising from this method as the chip is marketed for half-bridge implementation?

Thanks so much,

Tim

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