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As u said , if i use flux concentrator and other guidelines, can i use DRV5053 to measure upto 50A AC current? Will DRV411 will also support upto 50A? do we need to follow any precautions for high current sensing?
As the reference design posted in TI states " Maximum measured error less than 5% from 1-A to 10-A rms", i have doubted that is it only for max error % or current range. As the design document/datasheet has no info about max sensing range, i have posted this query.
There's actually an easy way to achieve more current range in that reference design. The DRV5053VA was used, which has 90mV/mT typical gain. The other device versions produce lower gain, and the output won't saturate until more flux density is applied.
I reached out to the DRV411 expert, and he should be replying soon.
The DRV411 and the DRV421 can measure above 50A. Both require cores with windings which will determine the measurement range. Both of these devices are closed loop systems that require the winding and core to complete the loop. Both have reference designs in the range you are looking for.
