Power Integrations (NASDAQ:POWI) reported quarterly earnings of $0.37 per share which beat the analyst consensus estimate of $0.32 by 15.62 percent. This is a 5.71 percent increase over earnings of $0.35 per share from the same period last year. The company reported quarterly sales of $118.939 million which beat the analyst consensus estimate of $117.440 million by 1.28 percent. This is a 2.66 percent increase over sales of $115.852 million the same period last year.