Hi,
According to datasheet, the recommended resistance of ISET is 49.9 kΩ ≤ RRSET ≤ 200 kΩ.
However, the TPS2421 excel design tool is suggested to have Maximum RRSET as 44.485Kohm for 12V/4A output.
That means it is out of recommended range, is it okay if to choice 43.2Kohm for setting?
Best regards,
Tiger