RDK-292 requires fewer than 125 components to implement the driver’s PFC, LLC and standby power supply circuits, resulting in low BOM cost and exceptional reliability. The design utilizes a combination of Power Integrations’ highly integrated HiperPFS power-factor-correction IC and the HiperLCS resonant converter IC, which together save up to 35 components compared with conventional LLC solutions. HiperLCS also permits the use of smaller magnetics and output filter capacitors than typical LLC designs. The design incorporates a Qspeed merged PIN-Schottky diode as well, boosting CCM PFC efficiency by delivering greatly reduced diode recovery losses when compared with conventional ultrafast silicon PFC diodes.
##IMAGE_1_L##For installations with remote lighting-control systems, the design implements highly efficient standby power-supply functionality based on Power Integrations’ LinkSwitch -TN ICs. The addition of a CAPZero X-capacitor discharge IC delivers further power savings, reducing no-load consumption to around 800 mW at 264 VAC input.
Comments Andrew Smith, product marketing manager at Power Integrations: “LED lighting can deliver significant cost savings for municipalities and commercial/industrial enterprises, but these savings cannot be fully realized without efficient, reliable, low-cost driver circuits. Power Integrations offers a full range of products – showcased in RDK-292 – to give designers of high-power LED lighting systems a strong competitive edge.”