Perhaps you should try some spelling variations:
lcc converter » dcdc converter, dc converter, ac converter
llc converter » dc converter, ac converter, luo converter
pfc converter » dc converter, ac converter, sepic converter
lc converter » dc converter, ac converter, c converter

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((lcc converter) OR (((lc converter) OR (((llc converter) OR (pfc converter)))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((lcc converter) or (((lc converter) or (((llc converter) OR (pfc converter))))))".
• Adding a wildcard symbol may retrieve word variants: ((lcc converter) or (((lc converter) or (((llc converter) OR (pfc converter))))))*.