I tested TPS544B20 Iout measurement accuracy with TPS544B20EVM and Fusion Digital Power Designer.
We measured actual output current by shunt resistor. The measurement result of our customer was on a same level although they used an ammeter.
The result is following. The error was larger than datasheet characteristic(+/- 3A and +/- 15%). Is this normal?
In order to we get datasheet accuracy, do we have to set "IOUT_CAL_OFFSET"?
Actual value Read value
0A 0.13A
2A 2.38A
4A 4.5A
6A 6.75A
8A 9.13A
10A 11.94A
12A 14.06A
14A 17.63A
16A 20.38A
18A 22.38A
20A 25.5A
Best Regards,
Kohei Sasaki