SLVSA92C November 2011 – September 2020 TPS63060 , TPS63061
PRODUCTION DATA
For the output capacitor, use of a small ceramic capacitor placed as close as possible to the VOUT and PGND pins of the device is recommended. If, for any reason, the application requires the use of large capacitors which can not be placed close to the device, use a smaller ceramic capacitor in parallel to the large capacitor. The small capacitor should be placed as close as possible to the VOUT and PGND pins of the device. The recommended typical output capacitor value is 66 µF with a variance as outlined in Table 9-1.
There is also no upper limit for the output capacitance value. Larger capacitors cause lower output voltage ripple as well as lower output voltage drop during load transients.
When choosing input and output capacitors, it needs to be kept in mind, that the value of capacitance experiences significant losses from their rated value depending on the operating temperature and the operating DC voltage. It is not uncommon for a small surface mount ceramic capacitor to lose 50% and more of its rated capacitance. For this reason, it is important to use a larger value of capacitance or a capacitor with higher voltage rating in order to ensure the required capacitance at the full operating voltage.