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

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 (pfc converter))) OR (ac converter)))).
• Adding a wildcard symbol may retrieve word variants: ((lcc converter) or (((((lc converter) or (pfc converter))) or (ac converter))))*.