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News
Diodes Incorporated Introduces High-Efficiency, Single-Winding Inductor 500V Buck LED Drivers
2015-08-19 | ReturnThe AL1678 family is offered in the space-saving SO-7 and provides a variety of different current-rated 500V MOSFETs, which allow designers to select the most appropriate driver to meet the needs of different bulb wattage and cost requirements.
With its improved driver topology, the AL1678 family provides significant circuit flexibility and delivers accurate constant current line and load regulation over the 85VAC to 277VAC universal input range. In addition, by operating in boundary-conduction mode, the driver keeps EMI low with greater than 90% high-efficiency, which aids with
The AL1678 LED drivers’ total BOM lamp cost is low because it removes the need for an external high-voltage MOSFET and an auxiliary winding, while requiring only a single external inductor. Integrated protection features include under-voltage lockout, over-temperature protection, LED open- and short-circuit protection, as well as a thermal fold-back function to help improve the system reliability of retrofit LED lamps at high temperature. The AL1678’s SO-7 package also helps improve electrical isolation and offers improved moisture resistance. Further information is available at www.diodes.com.
Source:http://www.diodes.com/