Hello,
I attempted to rebuild the reference circuitry from the nPM2100, and I am measuring unusual power consumption using the PK2 outputting 1000mV.
Partially, I had a unrealistically low consumption on the input. Far lower than what I was drawing at the output.
On the other hand, I connected a 100 Ohm resistor to the output. I did not configure anything via I2C.
On the output, I measured a current of 30mA, which makes sense.
On the input, the PK2 was reporting a current of 300mA.
In summary:
Input: 1000mV, drawing 300mA.
Output: drawing 30mA via 100Ohm resistor.
I would be glad to have these questions answered:
1. Are these numbers realistic? Could I be missing a component?
2. Is it reasonable to use the nPM2100 without any configuration via I2C?
3. Is there some chart outlining the efficiency of the nPM in different voltages etc.?
4. Is the PK2 able to reliably measure the current consumption of the nPM2100 with it's measurement frequency?
Thanks a lot!