SLVSHN0 September 2024 TPS548B23
ADVANCE INFORMATION
The CFG3-5 pins select the device output voltage configuration as well as FCCM or PFM operation based on Table 7-3. For this design, use the internal FB configuration option.
If an output voltage other than those is available in Table 7-3, the external feedback configuration allows the output voltage to be programmed by a voltage-divider resistors, R1 and R2. Connect R1 between the FB pin and the output, and connect R2 between the FB pin and GOS. The recommended R2 value is 10kΩ, but the value can also be set to another value between the range of 1kΩ to 20kΩ. Determine R1 by using Equation 5.