STEVAL-ILL027V2 demonstration board

AN3111

14/23

Doc ID 16815 Rev 2

3

STEVAL-ILL027V2 demonstration board

An original demonstration board (STEVAL-ILL027V1) was redesigned in order to

demonstrate this design concept also for the EU input voltage range. In fact, it means that

the board can operate with the input voltage between 188 V and 265 V AC. The LED

constant current is again set to 350 mA using the same output LED power 18 W. All required

board modifications and measurements, comparing with the STEVAL-ILL027V1, are

described in the following sections. The demonstration board for the EU input voltage range

has the order code; STEVAL-ILL027V2.

3.1

Schematic diagram

Figure 10.

STEVAL-ILL027V2 schematic diagram