STEVAL-ILL076V2 (STMICROELECTRONICS)

The STEVAL-ILL076V2 is an 18W wide input range ultra slim flyback converter using HVLED001A quasi resonant flyback controller and STD8N80K5. It implements an offline power converter based on a single stage high-PF flyback topology using the HVLED001A controller. The output voltage is controlled by the primary side, thus reducing the need for costly opto-couplers. The HVLED001A PSR precision and the innovative structure of the transformer for highly accurate output voltage regulation against load and line changes. A very high efficiency is obtained and a full set of protections including output short circuit and input overvoltage is included. Conducted EMI is pre-screened and clearances and creepage distances adhere to EN60950 safety requirements. Power factor and THD are optimized to be respectively higher than 0.95 and lower than 10% at full load over the entire input voltage range. Main application is for bus power supplies in a LED string driver providing 4KV isolation.