the LEDs never operate outside their safe operating area

It is an honor to be recognized by EDN as having the most innovative dimmable LED driver IC” said Ron Edgerton, President and CEO of iWatt.

The iW3610 addresses the most pressing requirements of the emerging solid state LED lighting market; namely, long life, high efficiency to reduce heat loss and smaller physical size with a low bill-of-material cost. The iW3610 is the industry’s first primary side regulated digital PWM controller for 3W up to 25W dimmable LED luminaires that eliminates the opto-coupler required for isolation. The device achieves 5% led high bay light current regulation over line, load and temperature variations for maintaining constant brightness and flicker free operation. Over 80% efficiency is achieved thanks to valley mode switching and proprietary adaptive digital control algorithm that adjusts the switching frequency relative to line voltage.

Maximum switching frequency of 200 kHz allows the design of small size transformer and use of smaller passive components to fit the LED driver electronics in space constrained Edison base sockets. Intelligent algorithm ensures that the iW3610 automatically detects the presence or absence of a wall dimmer be it a leading edge or a trailing edge dimmer and allows 2% to 100% flicker free dimming range. The device allows automatic reduction of LED current at high temperature to ensure that the LEDs never operate outside their safe operating area.

A 15W dimmable LED linear high bay light can be designed with PCB footprint under 30mm x 75mm and only forty seven components for true dimmable retro-fit lamp replacement. The company has successfully enabled market leading luminaire manufacturers to design, develop and release to production dimmable GU10, A-type bulbs and PAR lamps using iW3610.