Part Number: TIDA-01608 Other Parts Discussed in Thread: INA260 , INA226-Q1 , INA239-Q1 Hi,
I am developing an application to measure the current from a 12V Vehicle battery in different load conditions,
the voltage will be in between +11 V to 13V maxim…
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 if you follow…
Hello Mo,
I was mostly concerned with the low level voltage thresholds and outputs from the isolator. However, looking over the specs for the ISO1541QDRQ1, it looks like they should be compatible. I would still recommend looking at the full transmission…
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…
Hello Stanly,
You are correct, the INA219 does not support that BUS voltage. If the INA219 is still needed, then here are a couple of design guides that can be used to to make this work:
https://www.ti.com/tool/TIDA-00528
https://www.ti.com/tool/TIDA-…
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 bus…
Hello Varban,
Thank you for using the TI forum. I agree that this figure is a little confusing. The GND of the load and the INA should actually be the same GND. If the levels are not compatible, then you can use an isolator device, as shown in these reference…
Hello Douglas,
None of our shunt based current sensors have built in isolation. If you need a device with built in isolation, then you could look into our Hall-effect current sensors, found here: https://www.ti.com/sensors/magnetic-sensors/hall-effect…
Hello Asith,
Thank you for sending that extra information. I agree with Kai that the issue is from having different grounds. If you need 2 different grounds, then you can use a digital isolation device, similar to the method used in this TI Design: https…
Hello Corrado,
Yes, you can use the INA228 with an I2C isolator. Here is an example with a similar device that could be adapted to the INA228: https://www.ti.com/tool/TIDA-01608 .
Regards,
Mitch