EVL6562A-400W

EVL6562A-400W is a evaluation board for L6562A 400W FOT controlled PFC pre regulator. The board implements a 400W, wide range mains input, PFC pre conditioner suitable for ATX PSU, Flat screen displays, etc. To make possible the use of a low cost device like the L6562A at this power level, the chip operates with Fixed Off Time control. In this PFC operating mode the Toff is kept constant and the Ton is free to be changed in order to modulate the power drained from the source according to the load. Peak current mode FOT control provides an unconditionally stable inner current loop with no gain peaking and shows dead beat control characteristics.

• Line voltage range of 90VAC to 265VAC
• Minimum line frequency is 47Hz
• Regulated output voltage is 400V
• Rated output power is 400W
• Maximum 2fL output voltage ripple is 10Vpk-pk
• Hold up time is 22ms
• Maximum switching frequency is 85KHz
• Minimum estimated efficiency is 90%
• Maximum ambient temperature is 50deg C
• EMI: in accordance with EN55022 Class B

Applications

Power Management, Imaging, Video & Vision