SLVSET3D March 2020 – October 2020 TPS63900
A 10-µF input capacitor is recommended to improve line transient behavior of the regulator and EMI behavior of the total power supply circuit. An X5R or X7R ceramic capacitor placed as close as possible to the VIN and GND pins of the IC is recommended. This capacitance can be increased without limit. If the input supply is located more than a few inches from the TPS63900 converter additional bulk capacitance can be required in addition to the ceramic bypass capacitors. An electrolytic or tantalum capacitor with a value of 47 µF is a typical choice.
When operating from a high impedance source, a larger input buffer capacitor is recommended to avoid voltage drops during start-up and load transients.
The input capacitor can be increased without any limit for better input voltage filtering. The leakage current of the input capacitor adds to the overall quiescent current.
|CAPACITOR VALUE [µF](1)||VOLTAGE RATING [V]||PART NUMBER||MANUFACTURER||SIZE (METRIC)|