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Dear all,
I use the component INA213BID in my application.
I observed that when I have no load, the component gets very hot (about 50°C / 323K with Tamb 24°C / 297K). The signal through the shunt resistor is 5V square wave, the component is powered at 3.3V.
I wanted to ask you if you have any ideas about the cause of this phenomenon.
Can the voltage difference between IN and V+ be a problem? I would like to test if I power the component at 5V (same voltage like the inputs) if the IC temperature will decrease.
Thank you very much for your support
Best regards
Andrea
Hi Andrea,
The voltage difference between IN and V+ is not a problem. For this type of application, the right choice of amplifier should be the ones that are capable of handling PWM input. Examples are INA240 and INA241.
The heat observed is a symptom of the device being already damaged.
Regards, Guang