SLVSFQ0B October 2020 – June 2024 TPS54J061
PRODUCTION DATA
The RTRIP resistor sets the valley current limit. Equation 12 calculates the recommended current limit target. This includes the tolerance of the inductor and a factor of 0.85 for the tolerance of the current limit threshold. Equation 13 calculates the RTRIP resistor to set the current limit. The typical valley current limit target is 6 A and the closest standard value for RTRIP is 4.99 kΩ.
With the current limit set, Equation 14 calculates the typical maximum output current at current limit. Equation 15 calculates the typical peak current at current limit. As mentioned in Section 7.2.2.2, the saturation behavior of the inductor at the peak current during current limit must be considered. For worst case calculations, the tolerance of the inductance and the current limit must be included.