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High voltage operational amplifier recommendation

jeno.zhang
Expert 1815 points
Other Parts Discussed in Thread: DRV8662, DRV2700, DRV2665, OPA445

HI TI，

Project Description: the customer needs a piezoelectric drive chip to drive a piezoelectric motor with a load of 2uF, and needs to output a  sine wave with a swing of 1kHz 30-90v.

The customer looked at the drv2665, drv2700 and drv8662, but when the load is 2uF, the output swing will be attenuated and can not reach 90V. Is there a good scheme recommended.

Or Can I build a high-voltage operational amplifier and boost for the circuit ，Is there a good proposal recommended？

I have an idea of the discrete solution with a high voltage Op-Amp and external boost converter ，Is there a high-voltage operational amplifier that meets the requirements？