You do not need any converter, it shows 110V but its actually 110V-240V.
Its all about voltage instead of wattages, you should not insist on something you do not know firmly.
Actually you do need a converter, just not one for voltage, but only one to enable you to plug the PS3's power cord into your wall socket.
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST
Live Chat Available Mon-Sat 6am-10pm PST & Sun 6am-8pm PST