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.
The document describes the EVAL6520-1421, a demonstration board designed to drive either a 14 W or 21 W linear T5 fluorescent lamp. It utilizes the L6520 low voltage ballast controller and STT13005D bipolar transistors within a standard form factor of 19 mm x 120 mm.
The board operates from any AC voltage in the European mains range without requiring power factor correction, as its input power is less than 25 W. It features an EMI filter to meet IEC61000 standards and ensures compliance with IEC61347-2-3 and EN55022 Class-C regulations.
The board can drive either a T5-14W-HE or T5-21W-HE linear fluorescent lamp.
The board uses a standard form factor measuring 19 mm by 120 mm.
The best efficiency and driving condition are obtained at 240 Vac with a 14 W lamp connected.