Application:1000W sonar driver.Vout 500V or greaterDrive underwater transducer for sea floor distance measurement. 15khz +-3khz modulated output, modulated for sonar signal Identification.20ms pulse every 5 seconds, max every 1 second for testing, very low duty cycle. Low average power.
I am considering a full bridge with the AC signal used as the error amp reference.Turns ratio to get the voltage up to drive the transducer.
Do we have any examples of TI Audio devices being used for SONAR?Transformers would be needed to increase the output voltage.
Ed WalkerTexas Instruments ACAT/DCAT Support
I bought an amplifier EVM from TI and tried a similar application to drive a transducer via a transformer and it failed. The reason for failure turns out to be due to the charging current of the transformer during the first cycle causing the short circuit protection on the device to trip and shut down the device. See my earlier post regarding this.
No, we have not looked at sonar applications in any great depth (booooo!). I have heard of many customers trying to use our audio amps for these kinds of applications, but I don't know how successful they have been.
Audio Applications Engineering Manager
Dallas, TX USA
You may want to look at the LME49810 as an option. It's a 200V audio driver with extremely low distortion; you would still need a step-up transformer, but it might work.
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