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EVL6564H-25W-BB：25 W wide-range high power factor buck-boost converter demonstration board using the L6564H

This application note describes a wide-range non-isolated 25 W regulated LED driver with high power factor. The EVL6564H-25W-BB demonstration board is well-suited to the Japanese market due to the broad use of standard 100 V_ac lighting applications and also 200 V_ac tubes in building automation systems.

The EVL6564H-25W-BB demonstration board has been designed in order to obtain the highest possible power factor over the entire input mains voltage, remaining compliant to EN55022 Class-B and keeping the average output current in a tight band with different LED characteristics.

The board is based on ST's L6564H power factor controller and the SEA05L CC-CV controller for LED current regulation in a non-isolated flyback configuration. The form factor has been designed to fit into a standard LED driver case, facilitating the replacement of the incandescent flood lamps up to 80-100 W power.

Key Features

• Line voltage range: 85 to 265 Vac
• Minimum line frequency (fL): 47-63 Hz
• LED string voltage drop: 70 V ±10% (23 LED p.n. X42182)
• LED nominal current: 350 mA ±1%
• LED current ripple pk-pk: 100 mA
• Rated output power: 25 W
• Power factor > 0.9
• Efficiency: > 89 % at 230 V
• Maximum ambient temperature: 50 °C
• Conducted EMI: In acc. with EN55022 class-B
• Overvoltage, open loop and short-circuit protection

产品规格

应用手册

Design Notes & Tips

许可协议

样片和购买

质量和可靠性