Part Number: TIDA-03050 Other Parts Discussed in Thread: TIDA-01608 , Tool/software: Hi
The battery module requires a shunt for current detection and isolation. Which is more suitable, the TIDA-03050 or the TIDA-01608?
MCU voltage 3.3V (1.65V at…
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…
Hi Bhavesh, Having two different grounds is the reason for the reading mismatch, the device ground and load ground are meant to be the same so that the device measures voltage and current with reference to the common ground. You don't need separate grounds…
Hi Anoop,
Our device will need to be on the same ground as the load (the noisy ground). We have a reference design about how to do this using the INA260 (integrated shunt) along with a digital isolator. https://www.ti.com/tool/TIDA-01608
As for the…
Hello Chase,
I agree with Clemens, it would be better to add the isolator on the I2C signals. Here are a couple example designs that do this:
https://www.ti.com/tool/TIDA-00313
https://www.ti.com/tool/TIDA-01608
Or, you could use a device that…
Hello Yixing,
The INA238 does not work with a floating shunt. The grounds of the load need to be shared with the grounds of the INA. As you noted, you could still use the INA238 with an additional digital isolator (as done in https://www.ti.com/tool…
Hi Ann, The INA238's datasheet has reference block diagrams in the Applications section - Section 8.2. Also, please note that this solution of using an rectifier and voltage divider would only work if the INA238 is being used for low-side sensing. I'm…
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…
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…
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…
