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…
Hello Bjoern,
Yes, this is fine to do, as long as the Hall Effect output is within the measurement range of the INA228. Just note that your accuracy and resolution will also highly depend on the specs of the Hall Effect sensor you choose. Also, make…
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…
Hello Johny,
Yes, you can supply the INA232 from wherever you want, as long as the voltage is within the operating range (1.7-V to 5.5-V), and the GND is shared with the device and the load being measured. If your cell under test needs to have a different…
Hello Mario,
If the load ground is not shared with the INA ground, then the measurement will be wrong. Also, in that case the voltage would be floating and could still damage the INA.
Yes, you could use a method similar to that reference design. Here…
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…
