Please let me know TPS56121/221 current limit threshold accuracy over the current limit setting range.
We can set OCP threshold value by ILIM pin resistor setting. However we don't know that accuracy, thus we can't judge how much margin should we have over maximum load current. In datasheet P.18 Current limit, it is described that "Allowing for 30% over maximum load". Is the 30% margin enough over the all current limit setting range and operating free-air temperature range? I think the threshold error becomes larger if ILIM resistor value is small.
Best Regards,
Kohei Sasaki