EVAL6520-1421演示板能够驱动一个14 W或21 W线性T5荧光灯与L6520低电压镇流器控制器。The EVAL6520-1421 is a demonstration board able to drive either a 14 W or 21 W linear T5 fluorescent lamp with the L6520 low voltage ballast controller.The half bridge consists of NPN high voltage power transistors driven by a suitable pulse transformer.