Power Integrations has announced a new reference design, DER-622, describing a smart wall switch compatible with wiring conditions most commonly found in residential retrofit installations. DER-622 illustrates a Bluetooth® Low Energy (LE) wall switch consuming less than 500 µA in standby mode. The design is based on Power Integrations’ LinkSwitch™-TN2 offline switcher ICs, which have quiescent consumption of less than 75 µA. The ICs’ ultra-low current consumption and high light-load efficiency ensure compatibility with energy-efficient LED bulbs rated down to 3 W and are ideal for no-neutral wall switch wiring.
Comments Hubie Notohamiprodjo, director of product marketing for LED lighting at Power Integrations: "Lighting control products such as smart wall switches and occupancy sensors play an important role in improving energy efficiency in homes and buildings. Many homes have wiring that is incompatible with available products or require rewiring, which increases cost and discourages product adoption. The simplicity of LinkSwitch-TN2 and its ultra-low current draw enable this elegant line-only smart-switch solution which is compatible with low-power LED bulbs and no-neutral wiring."