The TPS2117 transitions between a primary and secondary supply with a fast switchover time of t_SW. After the secondary input is connected to the output, like t_SW, the device heavily drives the channel of the secondary supply to ramp up the output voltage as fast as possible. This is performed to keep the driven load in a stable operating condition and to minimize the voltage dip. The duration of this channel boost is typically 11 µs. In the case of a heavy load, the output voltage may not reach the final value after 11 µs and in this case the device reverts back to the soft start output ramp rate. This behavior reduces the amount of time a large pulse of current can flow through the enabled channel and into the load.