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    1. Markets
    2. Lighting

    PFC and Ballast Control IC Integrated in an 8-Pin SO-8 Package

    July 6, 2011
    International Rectifier, IR, introduced the industry's first IC to integrate power factor correction (PFC) and ballast control in a single compact 8-pin SO-8 package.

    International Rectifier, IR, introduced the industry's first IC to integrate power factor correction (PFC) and ballast control in a single compact 8-pin SO-8 package. The new IRS2580DS Combo8 IC simplifies design and reduces overall component count to speed up design in energy efficient lighting applications.

    The IRS2580DS includes a boost converter control circuit operating in critical-conduction free-running frequency mode to provide power factor correction with ultra-low THD. The new IC also includes a 600 V half-bridge control circuit working at 50 percent duty-cycle and variable frequency for driving the resonant mode lamp output circuit.

    Complete fault protection circuitry is also included for protection against such conditions as mains interrupt or brown-out, lamp non-strike, lamp filament failure and end-of-life. The IRS2580DS requires only two primary control pins to perform all of the necessary ballast functions. These functions include an analog voltage-to-frequency input pin for programming the different operating frequencies for preheating, igniting and running the lamp, and a PWM output pin for controlling the on and off times during each switching cycle of the PFC boost converter.

    Pricing for the IRS2580DS begins at US $1.05 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.

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