The board survived 4.95 A through the 0.05 Ohm shunt and test jig 0.5 Ohm resistor for > 1 minute. The shunt did not get too hot. My index finger temperature probe stayed rare.
The 5 W power resistor on the test jig got too warm to touch, so some forced air cooling will be required for longer tests. Or a bigger resistor to handle the 12.5 W.
Todo: Getting a log of the measured data from the INA209 and more testing to follow.
with 0.05 Ohm Shunt
|0.5 Ohm||4983.4 mA||5.0 A||99.7%|
|193.2 mA||0.194 A||99.6%|
|5.271 A||5.29 A||99.6%|
|2 Ohm||220.6 mA||222.1 mA||99.3%|
|400.9 mA||399.4 mA||99.6%|
|110 Ohm||52.4 mA||50.0 mA||95.4%|
|25.6 mA||25.0 mA||97.7%|
|9.8 mA||10.01 mA||97.9%|
|4.2 mA||5.01 mA||83.0%|