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LED driver ICs integrate PFC, CC functions

Posted: 28 Jan 2011     Print Version  Bookmark and Share

Keywords:lighting applications  lighting fixtures  MOSFET  LED 

Power Integrations introduces seven new members of its LinkSwitch-PH family of LED driver ICs, the LNK413-LNK419 tailored for lighting applications ranging from 3W bulbs to 55W replacements for fluorescent lighting fixtures.

The devices, which claim to achieve up to 88 per cent efficiency, feature a PWM-dimmable single-stage controller with both power factor correction (PFC) and accurate constant current (CC) power conversion functionality. The integrated PFC and CC functions empower multiple drivers to be connected in parallel to drive exterior and street area lights efficiently and with functional redundancy.

LinkSwitch-PH devices utilise the PFC/CC controller, a 725V MOSFET and MOSFET driver into a single package, simplifying layout and design, as well as eliminating parasitic elements between the controller and MOSFET.

The ICs offer ultimate reliability at low cost by eliminating up to 25 additional components used in traditional isolated flyback designs, including the high-voltage electrolytic bulk capacitor and the optocoupler―the components most likely to limit the lifetime of an LED lamp.

LinkSwitch-PH devices are available now starting at Rs.50.91 ($1.11) each for 10,000-piece quantities.

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