SLVSEW4 April 2019 TPS650002-Q1
Due to the DC-DC converter having a pulsating input current, a low-ESR input capacitor is required for best input voltage filtering, and minimizing the interference with other circuits caused by high-input voltage spikes . Place the input capacitor as close as possible to the VINDCDC pin with the clean GND connection. Do the same for the output capacitor and the inductor. The converters require a ceramic input capacitor, a 10 μF is recommended. The input capacitor can increase without any limit for better input voltage filtering.