AN2961 ILL026V1 STEVAL，非隔离为3 W离线式LED驱动器，基于VIPER22A-E的

AN2961 ILL026V1 STEVAL，非隔离为3 W离线式LED驱动器，基于VIPER22A-E的

AN2961
Application note
STEVAL-ILL026V1 non-isolated 3 W offline
LED driver based on the VIPER22A-E

Introduction
This application note describes the functioning of the STEVAL-ILL026V1 non-isolated 3 W
offline LED driver power supply designed using the VIPER22A-E low power offline SMPS
primary switcher from STMicroelectronics. The circuit regulates the load current to 350 mA
and generates about 10 V. The load is composed of three high-brightness (HB) LEDs,
connected in series.
The project does n