According to US business information, Power Integrations (Nasdaq: POWI), a leader in high-voltage integrated circuits for energy-efficient power conversion, announced two new LED driver ICs featuring dimming through two-way thyristors. , single stage, has been corrected by power factor. Target application - solid state lighting (SSL).
LinkSwitch-PH (best for isolated systems) and LinkSwitch-PL (best for non-isolated systems) enable non-flashing one-way TRIAC dimming and provide user experience similar to incandescent lighting.
The LinkSwitch-PH and LinkSwitch-PL product families feature a single-stage power factor correction (PFC) that allows SSL illuminators to achieve PF > 0.9 efficiency. The LinkSwitch-PH unit also incorporates primary side control technology, eliminating the need for optocouplers and support components used in traditional isolated flyback designs.
The non-isolated LinkSwitch-PL design further reduces component count, improves reliability and reduces bill of materials (BOM). Both series are single-chip ICs, which integrate controllers and MOSFETs into a single silicon chip, simplifying the number of components and eliminating the parasitic capacitance between the controller and the power MOSFET. The PCB layout. The new LinkSwitch products have been optimized for the efficiency of simple flyback designs, operate at input voltages up to 305 VAC, and enable the development of single voltages for a variety of residential and commercial lighting applications worldwide. Universal input products.
The LED's operating hours are expected to exceed 50,000 hours when operating within the manufacturer's temperature range and drive current conductors. The weakest link in an LED lighting system is the driver circuit, which can withstand the burden of optocouplers and electrolytic capacitors. Power Integrations' precision primary side control technology, an important technology used in LinkSwitch products, eliminates the need for optocouplers, and the new LinkSwitch LED driver IC product line eliminates the need for large electrolytic capacitors. Designers using LinkSwitch-PL and LinkSwitch-PH for SSL products can expect the drive's operational life to match the life of its precision-controlled LED array.
Bill Weiss, Power Integrations Lighting Development Manager, said: "These two new series are best suited for LED drivers that replace general lighting and space limitations. The LinkSwitch-PH series is best suited for isolated designs and ratings The 50W output power is more effective on external LED ballasts, often used in down-lighting, architectural lighting, signage and outdoor lighting. Both devices reduce system BOM size and size, thereby increasing system reliability. This type of IC allows designers to optimize system efficiency and meet or exceed all legal standards, such as the Energy Star and EN61000-3-2 standards."
LinkSwitch-PH samples are currently available in a halogen-free, ROHS-compliant eSIP-7C package, priced from $1.18 to $1.71 each, 10,000 units per order. The LinkSwitch-PL IC will be available in August 2010 in small SO-8 and eDIP?-12 packages.
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