iWatt Inc. (Campbell, CA) recently introduced a new digital AC/DC solid state lighting (SSL) LED driver platform designed specifically to address the key issues of cost and lifetime in price-sensitive, non-dimmable, residential SSL bulb applications. The first device in this new platform is the iW3626, a singlestage driver with output power up to 10W for 60W-equivalent, non-dimmable LED bulbs. The iW3626 is believed to be the first SSL LED driver to offer an on-chip, user-configurable power factor correction (PFC) to manage the trade-off between PFC and output current ripple. Additionally, an internal, configurable over-temperature protection (OTP) and derating function enables a predictable and reliable bulb operating life.

The patent-pending, user-configurable PFC feature in the iW3626 allows designers to configure the PF strength from > 0.7 to > 0.9. The on-chip, configurable over-temperature protection and derating feature of the iW3626 monitors the temperature inside the sealed SSL bulb. When thermal conditions reach a point set by the system designer, the iW3626 LED driver automatically reduces the current drive to the LEDs, lowering the power dissipation and resulting in cooler overall operation.

For Free Info Click Here 

Lighting Technology Magazine

This article first appeared in the September, 2013 issue of Lighting Technology Magazine.

Read more articles from this issue here.

Read more articles from the archives here.