SNVSBJ0A December 2019 – June 2020 LM5170
One purpose of the peak current limit is to protect the power inductor from saturation. Select RIPK such that the peak current limit threshold is 5~10% greater than Ipeak. According to Equation 13, one gets:
Select RIPK = 40.2 kΩ, which results in a nominal inductor peak current limit of 44.2 A per channel.