Joemill Flordelis wrote:
> I'm building an amplifier using OPA454 to drive a piezo. The op-amp
> will be a dual power supply using +/-30V power supply. I was wondering
> if you could help me out design a +/-30V power supply from a +12V
> power supply. Kindly recommend to me boost regulators and give me tips
> on the circuit design.

I would look into something called a "H bridge".  That will let you drive
the piezo both ways without requiring a negative supply.  You can boost the
12V up to 30V.  That will be the high side power to the H bridge, which wil=
l
drive the piezo.

There are some tricks, like combining the buck converter and the high side
drives of the H bridge.  These are not actually that complicated, but are
not conceptually as simple.  Since you're here asking, it's probably not th=
e
best place for you to start.


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