THE COMPANY	12 Months Ended
Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
THE COMPANY [Text Block]	THE COMPANY: Power Integrations, Inc. ("Power Integrations" or the “Company”), incorporated in California on March 25, 1988 and reincorporated in Delaware in December 1997, designs, develops, manufactures and markets proprietary, high-voltage, analog and mixed-signal integrated circuits (“ICs”) and high-voltage diodes for use in electronic power supplies, also known as switched-mode power supplies. The Company's ICs and diodes are used principally in AC-DC power supplies in a wide variety of end products, primarily in the consumer, communications, computer and industrial electronics markets. The Company is subject to a number of risks including, among others, the volume and timing of orders received from customers, competitive pressures on selling prices, the demand for its products declining in the major end markets it serves, the volume and timing of deliveries of orders placed with the Company's wafer foundries and assembly subcontractors, the inability to adequately protect or enforce its intellectual property rights, fluctuations in the exchange rate between the U.S. dollar and the Japanese yen, the audit conducted by the Internal Revenue Service, which is asserting that the Company owes additional taxes relating to a number of tax related positions, the continued impact of recently enacted changes in securities laws and regulations including the Sarbanes-Oxley Act, required expenses incurred in connection with its litigation, the lengthy timing of its sales cycle, undetected defects and failures in meeting the exact specifications required by its products, reliance on its international sales activities which account for a substantial portion of net revenues, its ability to develop and bring to market new products and technologies on a timely basis, the ability of its products to penetrate additional markets, attraction and retention of qualified personnel in a competitive market, exposure to risks associated with acquisitions and strategic investments, its ability to successfully integrate, or realize the expected benefits from its acquisitions, changes in environmental laws and regulations, interruptions in its information technology systems and earthquakes, terrorist acts or other disasters.

THE COMPANY:

Power Integrations, Inc. ("Power Integrations" or the “Company”), incorporated in California on March 25, 1988 and reincorporated in Delaware in December 1997, designs, develops, manufactures and markets proprietary, high-voltage, analog and mixed-signal integrated circuits (“ICs”) and high-voltage diodes for use in electronic power supplies, also known as switched-mode power supplies. The Company's ICs and diodes are used principally in AC-DC power supplies in a wide variety of end products, primarily in the consumer, communications, computer and industrial electronics markets.

The Company is subject to a number of risks including, among others, the volume and timing of orders received from customers, competitive pressures on selling prices, the demand for its products declining in the major end markets it serves, the volume and timing of deliveries of orders placed with the Company's wafer foundries and assembly subcontractors, the inability to adequately protect or enforce its intellectual property rights, fluctuations in the exchange rate between the U.S. dollar and the Japanese yen, the audit conducted by the Internal Revenue Service, which is asserting that the Company owes additional taxes relating to a number of tax related positions, the continued impact of recently enacted changes in securities laws and regulations including the Sarbanes-Oxley Act, required expenses incurred in connection with its litigation, the lengthy timing of its sales cycle, undetected defects and failures in meeting the exact specifications required by its products, reliance on its international sales activities which account for a substantial portion of net revenues, its ability to develop and bring to market new products and technologies on a timely basis, the ability of its products to penetrate additional markets, attraction and retention of qualified personnel in a competitive market, exposure to risks associated with acquisitions and strategic investments, its ability to successfully integrate, or realize the expected benefits from its acquisitions, changes in environmental laws and regulations, interruptions in its information technology systems and earthquakes, terrorist acts or other disasters.