REFICL8800LED43WTOBO1

REF_ICL8800_LED_43W is a 43W reference design featuring Infineon’s high power factor flyback controller ICL8800. The board is a constant voltage secondary-side regulated system and is intended to be used with constant current converter for LED lighting applications. 2-stage topologies are growing because of the convenient scalability of power on the primary side and the features on the secondary side. REF_ICL8800_LED_43W is designed as plug-and-play solution and can be combined with secondary-side DC/DC boards. As a default setup, the reference design board is assembled with a start-up circuit based on a depletion-mode MOSFET BSS126I on a very small adapter board. This setup offers the lowest standby losses. If low standby consumption is not necessary, the start-up circuit can be changed to a resistive start-up. This reference design is provided with two regulation circuits. Both circuits are designed as plug-and-play solutions, but at least one has to be connected to the main board.

• Power factor greater than 0.9 and THD less than 10% across wide load range (AC input up to 277Vrms)
• Maximum AC input voltage 90 – 305VRMS
• Critical conduction mode and quasi-resonant mode with smart valley hopping
• Best fit topology for on/off LED driver with minimum dimming levels down to 5%
• Two-stage topology combines scalability with numerous features
• Cost-effective and bottom-up design
• Flexibility and low BOM for many applications