350 W CCM PFC pre-regulator demonstration board based on the L4984D

The EVL4984-350W demonstration board, based on the new L4984D continuous conduction mode PFC controller, implements a 350 W wide-range input PFC pre-conditioner. It is suitable for all SMPS from 150 W to several kWs, and is compliant with IEC61000-3-2 and JEITA-MITI standards.

Key Features

  • Line voltage range: 90 to 265 Vac
  • Minimum line frequency (fL): 47 Hz
  • Regulated output voltage: 400 V
  • Rated output power: 350 W
  • Maximum 2 fL output voltage ripple: 12.5 V (peak-to-peak)
  • Hold-up time: 20 ms (VDROP after hold-up time: 300 V)
  • Switching frequency: 70 kHz
  • Minimum efficiency: 94% (at Vin = 90 Vac , Pout = 350 W)
  • PCB: single-side, 70 um, CEM-1, 112 x 114 mm


EVL4984-350W schematic

EVL4984-350W schematic ×



Description Version Size
DB1760 DB1760: 350 W CCM PFC pre-regulator demonstration board based on the L4984D 2.0 511 KB
Description Version Size
AN4163 AN4163: EVL4984-350W: 350 W CCM PFC pre-regulator with the L4984D 2.0 3 MB


Board Manufacturing Specifications
Description Version Size
Gerber files for EVL4984-350W 1.0 65 KB
Bill of Materials
Description Version Size
EVL4984-350W BOM 1.0 14 KB
Schematic Packs
Description Version Size
EVL4984-350W schematic 1.0 27 KB


Description Version Size
Evaluation products license agreement 1.0 125 KB


型号 Core Product Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
EVL4984-350W L4984D Active 110.25 - NEC EAR99 - MORE INFO 直接购买 Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
EVL4984-350W ActiveCARDIndustrialNot compliant

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.