I have an application where we need good current sensing resolution at both high and low current operation.  We are considering using a 120A and 25A TLI4971 devices in series.  During high current operation the 25A device will saturate and we would use the output of the 120A device, otherwise we default to the 25A device.

If we put both devices in series and properly heat sink both devices for 120A operation is this an acceptable application?

[Question]

I understand that some versions of the TLE4971 are perceived to be capable of measuring a current of up to ±120A internally, depending on the product.(iCR)
However, when referring to the datasheet, the TLE4971's Nominal current is specified as ±70A.

Is there a way to detect ±120A using iCR with the TLE4971?

Can I program the TLE4971 using any other method than XENSIV™ - TLI4971, TLE4972 current sensor programmer utilitary board?

Even I don't see many details about programming this sensor with the programmer board. 

Hello

My customer would like to check the current sensing by disconnecting the programmer board.  Is it possible to work only on TLI4971 EVL 120A board?  If yes, all they have to do is providing power of 3.3V and 5V?  Is that all if they don't program EEPROM?  Or does TLI4971 EVL 120A board need the programmer board anyway to check the current?

Best Regards,

ykawa

I am working on one appliance project where I need to read the current from the load. So I have purchased TLE4971 current sensor kit with programmer utility board.

I have programed the TLE4971(Current sensor) by using the programmer kit(XENSIV™ - TLI4971, TLE4972 current sensor programmer utility board).

I have connected the TLE4971 kit with my programmer board by using flex cable and I am able to configure and read the correct value of current from the sensor in GUI application as well as in firmware.

My configurations are: Mode: Single ended mode, Vref:1.65V, OCD1 and OCD2 both are disable and measurement range is 25A. Please note that I have perform the store operation in EEPROM by using GUI application. And on next boot I am able to read the previous configuration data.

So now I want to directly connect my current sensor with PSOC62 board. I have connected Aout, Vref, VDD,GND and Vsense line with PSOC62 board and tried to read the ADC data from Aout pin.

But looks like I am not getting any output from current sensor. If I connect the current sensor with programmer board and start the GUI application and then connect the Aout, Vref, VDD, GND and Vsense pin with PSOC62 MCU then I am able to read the data in firmware.

So is there any sequence to follow before reading the current data from TLI4971 sensor?(After configuration from GUI application). I have already gone through the programming guide and user manual but looks like our GUI application is performing the initial configuration like selecting mode/configure vref/Set measurement range etc. So Do I need to perform any SICI operation while reading the Aout(Actual current sensor value)?