Part Number: P82B96 Other Parts Discussed in Thread: INA260 , INA228 , , TIDA-01608 , ISO7842 , ISOW7842 Tool/software: I've used this part (P82B96) as part of the TIDA-01608 reference design but replaced the current sensor with a INA228. The communications…
Hey Sivam,
Clemens is correct that our device needs to be on the same ground as what it is measuring. An isolated ADC is one good option. Another option if you still want to use the INA226 would be to use a digital isolator, or mirror the current to…
Hi Chase,
You have many options for this. Our shunt based devices (the INA series) can't typically handle that high of voltage on their own, but we have this reference design for the INA226 ( https://www.ti.com/tool/TIDA-00639 ) that allows you to…
Hello,
It looks like you are using two different grounds, but the same SPI bus. This will likely cause voltages outside of the specified ranges and break the device. If you need to use multiple grounds, then you should use a digital isolator, similar…
Hello Kevin,
No, these grounds cannot be left disconnected, or the common mode voltage spec limit may be violated and the device could get damaged. If you need a separate GND between between the MCU and the load, then you have a couple options:
…
Hello Abhijith,
You will not be able to measure the VBUS voltage in this configuration because the GND for the INA237 and the load are not shared. The GND for the INA237 and the load must be the same in order to read voltage.
You can use an isolator…
Hey Zabieru-san ,
In addition to what Clemens said, here are some reference designs using an isolator that you can use as a reference:
https://www.ti.com/tool/TIDA-01608 (with an integrated shunt: INA260)
https://www.ti.com/tool/TIDA-00313 (external…
Hello Emma,
Since they do not need a VBUS measurement, maybe they can sense on the low side. This way the voltage at the input pins is near 0V, so there would be no issue. If they do need a higher voltage at IN+ and IN-, then they could use either of…
Hey Hakan,
When working on the new design, if you need isolation between the load and the MCU/Processor, you can use a digital isolator, similar to these designs:
https://www.ti.com/tool/TIDA-00313
https://www.ti.com/tool/TIDA-01608
Note that…
Hi Shreya,
Our devices are not designed for isolation, so isolating IN+ and IN- would cause unpredictable behavior. If you are interested in isolation, you can reference the following reference designs:
https://www.ti.com/tool/TIDA-01608 - Positive…
