New LinkSwitch®-II Design Ideas from Power Integrations Make Driving LEDs Simple！！！

Suited for power supplies and ballasts driving high-brightness LEDs, LinkSwitch®-II ICs offer constant-current performance and minimal external component count. DI-184 illustrates circuit for driving 700 mA of current through strings of 2 series-connected WLEDs; DC side circuit is electrically isolated from AC side. DI-185 and DI-186 both drive 350 mA current through strings of 3 WLEDs. Former utilizes isolated flyback topology, and latter has non-isolated, tapped buck topology.

Highly accurate constant-current output regulation and integrated protection features ease development of efficient, cost-effective LED lighting fixtures




SAN JOSE, Calif., Jun 30, 2008 -- Power Integrations (Nasdaq:POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced a series of design ideas to help designers of LED driver circuitry benefit from the company's recently introduced LinkSwitch-II family of AC-DC power conversion ICs. The new design ideas (DI-184, DI-185 and DI-186), demonstrate that LinkSwitch-II ICs are well suited for power supplies and ballasts driving high-brightness LEDs. The devices' highly accurate constant-current performance and low external component count enable LED ballasts that are simpler to design, lower-cost, and more durable than existing converter technology.

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