Part Number: INA226EVM Hello, I'm looking over the -48V Telecom Current, Voltage and Power Sense with Isolation Design and I notice that in the schematics the VBUS voltage is connected to V+ pin 10 instead of V- pin 9.
https://www.ti.com/product/…
Part Number: INA226 Other Parts Discussed in Thread: TIDA-00313 Tool/software: I have a design using two INA226 to measure +12V and -12V and a common ground. For negative bus, I have left the VBUS connection open, and I am trying to measure the shunt…
Part Number: INA4235 Other Parts Discussed in Thread: INA226 , TIDA-00313
Tool/software:
Hello,
I need a way to measure negative common mode voltage of -15V using the INA4235 or the INA780x.
I can't found nothing, just about INA226 .
Thanks.
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 a…
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 to…
Hello Parth
Thank you for using the TI forum. You can accomplish this though either mirroring the current or sensing low side and dividing down the bus voltage. Here are a few examples:
Mirroring current (shunt on the high-side):
https://www.ti.com/tool…
Hi Devendhiran, From the analog side of our current amplifiers, we don't have a device that would satisfy all your requirements, for example the INA241 and INA296 would sustain at a -20V, but wouldn't satisfy your input impedance and input bias requirements…
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…
Part Number: INA280 Other Parts Discussed in Thread: INA226 I'm looking to utilize the INA280 to sense current on the negative voltage Rail (Low Side). I came across a TI Designs circuit ( TIDA-00313 ) that employs the INA226 to monitor negative voltages…
