SLVSBV5C June 2014 – September 2021 TPS55340-Q1
PRODUCTION DATA
To set the output voltage in either DCM or CCM, use Equation 26 and Equation 27 to calculate the values of R1 and R2.
Considering the leakage current through the resistor divider and noise decoupling into FB pin, an optimum value for R2 is around 10 kΩ. The output voltage tolerance depends on the V(FB) accuracy and the tolerance of R1 and R2. In this example, with a 24-V output, R1 is calculated to 185.3 kΩ using Equation 27. The nearest standard value of 187 kΩ is used.