Hello,
I am having trouble with calculating the right power via INA234's power register (0x03). The datasheet provides the following equation:
Power [W] = 32 x CURRENT_LSB x POWER
If I were to use it, I would obtain enormous numbers. My test case is the following:
CURRENT_LSB = 8,
Voltage = 23.756 V,
Current = 0.280 A
The above values are read via INA234 IC, but also verified with a multimeter. The power register reading I get at this time is around 418. If I were to use the given equation to get the power:
Power [W] = 32 x 8 x 418 = 107008
The expected power is 23.756 * 0.280 = 6.65168 W
I have noticed that similar power I can get if I divide the power register value by 64:
Power [W] = 418 / 64 = 6.53125
But this is just me guessing.
I would appreciate all feedback on whether the power equation from the datasheet is correct or not, or whether I am doing something wrong...