The EN6340QI and EN6363QI feature very low output voltage ripple. The output ripple of a synchronous buck converter can be attributed to the module’s design, inductance, switching frequency, layout, and output decoupling. To achieve the best ripple performance, low ESR ceramic capacitors (type X5R or X7R) are recommended. Note the output voltage ripple scope captures on this slide from the datasheets. They show ripple not only with 20 MHz bandwidth limiting turned on, but also at the full 500 MHz bandwidth of the scope.