SLVSET3D March 2020 – October 2020 TPS63900
The device has a dynamic voltage scaling function to switch between the two output voltage settings. When the SEL pin changes state, the output voltage ramps to the new value in 100-mV steps. The duration of each step is 125 µs (see Figure 7-10).
The device does not actively discharge the output capacitor, when the output voltage ramps to a lower level. This leads to a longer output voltage settling time when light load is applied (see Figure 7-11). The settling time can be calculated with Equation 3.