Tool/software:
Hello,
When I look at the TDS which is below;
There is a push-pull driver for piezo.
I set up push-pull circuit like this.
I try to design a push pull circuit to amplify 1MHz 3 VDC input signal to 1MHz 50VDC signal. Output current is maximum 50mA.
Can you give me some suggestion about this circuit.
Best Regards.
Hello Isaac,
No, but when I search about subject I found PGA460 document. There is a circuit which is shared above.
But PGA460 have an inner circuit like below.
PGA460 have open drain mosfets for drive piezo. So push-pull circuit designed for this condition.
But this circuit does not match for my signal. So I built new push-pull circuit.
Best Regards.
Hello Zabbza,
Thanks for the patience while we were out of office. The complete inner workings of the PGA460 are not found in the document you referenced above, the full bridge driver circuit that is pictured below is all external to the PGA460, internally the PGA460 only uses two low side drivers as it is typically used to work with a center tap transformer and not direct driven. The circuit below provides an alternative to driving a transducer with a direct driven circuitry, but it doesnt quite take 3.3V and covert it to a 50V signal as you require in your system. I think if you are trying to make a circuit like this that is capable of driving 1MHz and 50V it might be best to create a new thread for our MOSFETs team on guidelines on how you can achieve this.
Best,
Isaac
