The TPS629210-Q1EVM is configured for external feedback as default with an output voltage of 3.3 V set by R1 and R2. Additionally, if the internal feedback (VSET) configuration is used, the user can cut net tie NT1 located on the back of the board. This modification is shown in Figure 3-1. This will float the FB pin resulting in a 3.3-V output voltage using the internal VSET. Resistors R1 and R2 can also be changed to set the output voltage between 0.6 V and 5.5 V. See the TPS629210 data sheet for recommended values. R2 was populated with 34 k such that if the internal (VSET) is chosen while R1 is removed, the device will regulate to 1.8-V output voltage.

Figure 3-1 Internal feedback (VSET) Configuration Board Modification