Description
The STEVAL-ILL076V1 product evaluation board implements an offline power converter based on a single-stage high-PF flyback topology using the HVLED001 controller. A very slim form factor is achieved using innovative magnetic parts. Output voltage is controlled by the primary side, reducing the need for costly opto-couplers. The precision of the HVLED001's PSR feature together with the innovative structure of the transformer make output voltage regulation very accurate against load and line changes. Very high efficiency is obtained and a full set of protection features are implemented, including protection against output short-circuit and input overvoltage. Conducted EMI is pre-screened and clearance and creepage distances are within EN60950 safety standards. Power factor and THD measurements are optimized to be higher than 0.95 and lower than 10%, respectively, at full load. The main application for this converter is bus power supply for an LED string driver providing 4 kV of isolation.