L6562A 400W FOT-controlled PFC pre-regulator evaluation board

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Parameter NameParameter Value
Target ApplicationAC-DC Topologies
Core ProductL6562A
Packing TypeNot Applicable
RoHs compliantEcopack1
Package NameCARD

The board implements a 400 W, 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, usually prohibitive for TM PFC, the chip operates with Fixed-Off-Time control.

This allows continuous conduction mode operation, normally achievable with more expensive control chips and more complex control architectures. For technical details and demoboard performance, please refer to the available application note.

Key features
  • EMI: in accordance with EN55022 Class-B
  • Maximum ambient temperature: 50 °C
  • Low profile design: 35 mm component maximum height
  • PCB type and size: single side,70 μm,CEM- 1,148.5x132 mm
  • Maximum switching frequency: 85 kHz (@Vin= 90 Vac, Pout= 400 W)
  • Hold-up time: 22 ms (VDROP after hold-up time: 300 V)
  • Line voltage range: 90 to 265 Vac
  • Regulated output voltage: 400 V
  • Minimum line frequency (fL): 47 Hz
  • Maximum 2fL output voltage ripple: 10 V pk-pk
  • Minimum estimated efficiency: 90% (@Vin= 90 Vac, Pout= 400 W)
  • Rated output power: 400 W