Hi all
I am trying to design circuit that will drive a piezoelectric material it needs to be driven between +175V and -175V and maximum current of around 1.72A however I would like to drive it at various frequencies 1kHz-40kHz, does anyone know an IC that already exists that does this or a topology that will do this would really appreciate your assistance I want this to be driven by a 12V battery too.

Kind Regards

Art

 

Do you have data on the Piezo? It would be nice to know its capacitance and frequency response.

Yes, here are some -- but I don't think you will like it:
https://www.digikey.com/products/en...94&quantity=0&ColumnSort=0&page=1&pageSize=25

I hope it is a big battery. Do some calculations on how much power you are supplying into the Piezo.

 

Do you have data on the Piezo? It would be nice to know its capacitance and frequency response.

Yes, here are some -- but I don't think you will like it:
https://www.digikey.com/products/en/integrated-circuits-ics/linear-amplifiers-instrumentation-op-amps-buffer-amps/687?k=&pkeyword=&pv2115=u4A&pv2115=u8A&FV=ffe002af,a4c0208,a4c0277,a4c0279,a4c027c,a4c027d,a4c0293,a4c0294,a4c02a8,ii1|2094&quantity=0&ColumnSort=0&page=1&pageSize=25

I hope it is a big battery. Do some calculations on how much power you are supplying into the Piezo.

Hi yeah cost is a little bit of an issue I think I have attached the frequency response, do you think there are any other more cost effect methods of implement this? Also how would I step up the 12V to 175V to use this op amp?

 

Do you have data on the Piezo? It would be nice to know its capacitance and frequency response.

Yes, here are some -- but I don't think you will like it:
https://www.digikey.com/products/en/integrated-circuits-ics/linear-amplifiers-instrumentation-op-amps-buffer-amps/687?k=&pkeyword=&pv2115=u4A&pv2115=u8A&FV=ffe002af,a4c0208,a4c0277,a4c0279,a4c027c,a4c027d,a4c0293,a4c0294,a4c02a8,ii1|2094&quantity=0&ColumnSort=0&page=1&pageSize=25

I hope it is a big battery. Do some calculations on how much power you are supplying into the Piezo.

from the data I have been provided the power they expect to be delivered to these piezo is around 37.5/40W I know this is a lot but its what has been suggested and I have driven it using a bigger variable power supply like this, I need to design a PCB now though.

 

from the data I have been provided the power they expect to be delivered to these piezo is around 37.5/40W I know this is a lot but its what has been suggested and I have driven it using a bigger variable power supply like this, I need to design a PCB now though.

This sounds like an ultrasonic welder for thermoplastic material. They are way more efficient when driven at the mechanical resonant frequency. Or is this an attempt to duplicate the ultrasonic attacks that were done in Cuba while back?? Quite a few transistor audio amplifiers will handle those frequencies, then you just need a suitable transformer to step up the voltage.