LED drivers for retrofit lamps
25 July 2012
Opto-Electronics
NXP Semiconductors announced the SSL2115x series of high-efficiency GreenChip driver ICs for low-cost LED retrofit lamps. The new SSL21151 and SSL21153 are designed for non-dimmable 5 W and 10 W LED lamps respectively, providing good current control in flyback and buck-boost configurations.
The SSL2115x enables small form-factor LED drivers, using primary-side sensing to regulate current, and offering integrated LED open/short protections, an internal 700 V MOSFET, and a circuit enabling startup directly from the rectified mains voltage. With the use of an additional valley fill circuit, the series can offer a power factor of approximately 0,9.
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