Bridge Amplifier

Thread Starter

neonihil66

Joined Mar 19, 2022
3
Hello guys. So I'm doing a project that has a DAC signal (sine wave) with about 1MHz and 3.3Vpp; it requires amplification (30 to 40Vpp) for the purpose of supplying my ultrassonic piezo transducers (they consume 500mA). What's the best IC in the market that can boost my voltage in that order and has an output current close to 500mA?

Thank you kindly
 

LowQCab

Joined Nov 6, 2012
5,101
It probably won't be an "IC",
the combination of high-Voltage, and high-Current, ( relatively speaking ),
and a 1-Mhz Frequency requirement,
likely makes this a Discreet-Components Device only.

You need a small FM-Radio-Transmitter, ( RF-Linear-Amplifier ).

Edit .............
Does it have to be a Sine-Wave ?,
There are heavy-duty FET-Drivers that can do the job with a Square-Wave.
.
.
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Last edited:

Thread Starter

neonihil66

Joined Mar 19, 2022
3
I did some simulations with THS3491 (high slew rate), and they were close to good. I was able to obtain 29Vpp and the output current is close to 450mA.
1654163523770.png
 

Thread Starter

neonihil66

Joined Mar 19, 2022
3
Just saw your edit. Yes, one of the requirements is to be a sine wave. I was able to obtain close to 30Vpp, but with more 10Vpp I would be satisfied.
 

Ian0

Joined Aug 7, 2020
13,131
Usually a piezo transducer is operated in a resonant circuit, so a square-wave would be appropriate.
 
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