Power Integrations (NASDAQ:POWI) reported quarterly earnings of $0.23 per share which beat the analyst consensus estimate of $0.19 by 21.05 percent. This is a 23.33 percent decrease over earnings of $0.30 per share from the same period last year. The company reported quarterly sales of $103.204 million which beat the analyst consensus estimate of $103.014 million by 0.18 percent. This is a 1.94 percent decrease over sales of $105.250 million the same period last year.