Hi there,
i stumbled upon a thing with my MKR 485 Shield.
Specified is 24v https://docs.arduino.cc/hardware/mkr-485-shield/#tech-specs
At the same Time it uses a TPS54232 which has a max 28v input.
https://www.ti.com/lit/ds/symlink/tps54232.pdf
I'm afraid to test it with 28v, because it works like a charm but would be convienient if i could connect it to a simple 28v AC/DC power adapter.
Can someone with more electronics knowledge ,give me an explanation why it is rated at 24v?
Thank you in advance!
I will take a SWAG and say that is a nominal voltage. In electrical systems, a nominal voltage refers to a standard or reference voltage level assigned to a system or device, serving as a baseline for design and operation. For a 24V system, this nominal value typically allows for a voltage variation of approximately ±10%. This means the system is designed to operate safely and effectively within a voltage range from about 21.6V to 26.4V.
Also the designer probably put a guard band on the rating as well.
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Probably you are right. I will not do an experiment for the Hypothesis.
Therefore I will just trust the specification in this case.
Thank you gilshultz!
Heat dissipation, max voltages of capacitors, diodes etc.
If it uses a buck, maybe it was optimized for a particular voltage range.
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