To improve regulation speed, TPS6282x preferably operates with a feed-forward capacitor, connected between VOUT and FB. The appropriate value is calculated using Equation 8.
Therewith, for typical values of feedback resistors (R2=100kΩ), the feed-forward capacitance is 120pF.
Figure 44 and Figure 45 show the results of a frequency domain analysis for both use cases, with and without a feed-forward capacitor. The larger unity gain frequency, caused by the feed forward capacitor, results in a significant improvement of the transient response.