SLVSDG6B May 2016 – April 2021 TPS54302
The output voltage of the TPS54302 device is externally adjustable using a resistor divider network. In the application circuit of Figure 8-1, this divider network comprises R2 and R3. Use Equation 6 and Equation 7 to calculate the relationship of the output voltage to the resistor divider.
Select a value of R2 to be approximately 100 kΩ. Slightly increasing or decreasing the value of R3 can result in closer output voltage matching when using standard value resistors. In this design, R2 = 100 kΩ and R3 = 13.3 kΩ which results in a 5-V output voltage. The 49.9-Ω resistor, R1, is provided as a convenient location to break the control loop for stability testing.