ZHCSB86E November 2011 – October 2021 TPS62150 , TPS62150A , TPS62151 , TPS62152 , TPS62153
PRODUCTION DATA
The recommended value for the output capacitor is 22 μF. The architecture of the TPS6215x device allows the use of tiny ceramic output capacitors with low equivalent series resistance (ESR). These capacitors provide low output-voltage ripple and are recommended. To keep its low resistance up to high frequencies and to get narrow capacitance variation with temperature, it is recommended to use X7R or X5R dielectric. Using a higher value of output capacitance can have some advantages, like smaller voltage ripple and a tighter dc output accuracy in power-save mode (see the Optimizing the TPS62130/40/50/60 Output Filter Application Report).
In power-save mode, the output-voltage ripple depends on the output capacitance, the ESR of the output capacitor, and the peak inductor current. Using ceramic capacitors provides small ESR and low ripple.