SNVSAB6B March 2017 – July 2018 LP8863-Q1
PRODUCTION DATA.
The coupling capacitors Cs isolate the input from the output and provide protection against a shorted load. The selection of SEPIC capacitors, Cs, depends mostly on the RMS current, which can be calculated with Equation 18. The capacitors must be rated for a large RMS current relative to the output power; TI recommends at least 25% higher rating for IRMS. When using uncoupled inductors, use one 10-µF ceramic capacitor in parallel with one 33-µF electrolytic capacitor and series 2-Ω resistor. If coupled inductors are used, then use only one 10-µF ceramic capacitor.
where