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NEVB-NEX80806DA - 85-264 Vac to 24 Vdc, 1 A flyback converter evaluation board

The Nexperia NEVB-NEX80806DA board is a reference design of a multimode flyback converter. It enables testing of the functionality and performance of the NEX80806 flyback converter. By simple re-work, the user can add NEX81811 (synchronous rectifier controller) and N-channel power MOSFET to evaluate synchronous flyback converter as well. The 1-layer PCB layout enables easy adaption of this board into a real industrial application of auxilliary power supply.

Key features & benefits

  • Universal Input voltage range: 85VAC to 264VAC
  • Output voltage: 24V/1A
  • Efficiency up to 90.54% at full load @230VAC
  • Ripple and noise less than 90mV at full range
  • Standby input power less than 120mW @264VAC
  • Startup delay less than 0.8s at full range
  • Meet EN55022 Class B conducted EMI standard
  • Input brown-in/ brown-out
  • Output over voltage protection
  • Output short circuit protection
  • Size 79mm*50mm*24.5mm

Products on the board (5)

Type number Description Status Quick access
NEX80806DA Adaptive multi-mode flyback controller, 65 kHz, with peak load mode, Over Current Protection (OCP) with a constant output voltage Production
TL431AIDBZR Voltage regulator diodes Production
US1M 1000 V, 1 A ultrafast recovery rectifier in SMA Production
PNU65010ER 650 V, 1 A ultrafast recovery rectifier Production
PNE20010EXD 200 V, 1 A hyperfast recovery rectifier Production

Products on the board (5)

Type number Description Status Quick access
NEX80806DA Adaptive multi-mode flyback controller, 65 kHz, with peak load mode, Over Current Protection (OCP) with a constant output voltage Production
TL431AIDBZR Voltage regulator diodes Production
US1M 1000 V, 1 A ultrafast recovery rectifier in SMA Production
PNU65010ER 650 V, 1 A ultrafast recovery rectifier Production
PNE20010EXD 200 V, 1 A hyperfast recovery rectifier Production

Documentation (3)

File name Title Type Date
flyback_controller_leaflet NEX806xx/NEX808xx wide Vcc range quasi-resonant/multi-mode flyback controller Leaflet 2024-10-17
synchronous_rectifier_leaflet NEX81801/NEX81802 adaptive synchronous rectifier controller Leaflet 2024-10-17
UM90078 NEVB-NEX80806DA Evaluation board User manual 2025-10-16

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