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TSC1641 power monitor IC dc power register cannot be read

fog.1
Associate III

i bought a TSC1641 evaluation board, I can't read the power information from the DC power register. I can successfully read shunt voltage, current, load voltage data.

the configuration is as follows:

Rshunt register value = 0x01F4; the shunt resistance on my semim development

board is 5 mili ohms.(decimal=500).

configration register value = 0x0037; conversion time 1024 µs (default),

7h: shunt and load voltage, continuous mode (default).

 

I check the FLAG register data zeroth (CVNF) bit to see if the data is ready,

but regardless of this, I do a reading at any time.does this cause problems

with reading dc power information?

 

fog1_0-1719484237228.png

 

11 REPLIES 11

the problem is solved. I noticed that I was getting an error because the power value I was trying to measure was less than 25 mw (DCpower_LSB is set to 25 mW.)
I took successful power measurements when I increased the amount of load I connected to the circuit, allowing more power to be drawn.


@fog.1 wrote:

the problem is solved..


Good - please mark the solution!

https://community.st.com/t5/community-guidelines/help-others-to-solve-their-issues/ta-p/575256