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SY22743UFAC (SY58873UFAC)

Production
Boost PFC Regulator
Datasheet
SY22743UFAC Boost PFC Regulator Datasheet
Part number SY22743UFAC
Description Boost CV PFC regulator with 500V/4.9Ω MOS, QR, THD<10%
Topology Boost
Dimming mode Non-dimming
PF (>) 0.9
Input type 230VAC
Iout (max) (A)
Pout (max) (W) 50
Package SO8
Application Boost CV, PFC
  • Integrated 520V MOSFET
  • Quasi-Resonant (QR) Mode to Achieve Low Switching Losses
  • PF>0.95, THD<10%
  • Output Over Voltage Protection 
  • Low BOM Cost
  • RoHS Compliant and Halogen Free
  • Compact Package: SO8

SY22743U is a single-stage Boost PFC Regulator. Constant tON operation is applied to achieve high PF and no multiplier is need. Quasi-Resonant switching is applied to achieve high efficiency and better EMI performance.

Evaluation Board

  • 2022-02-17_151137

    Photo of evaluation board

  • 2022-02-17_151152

    Photo of evaluation board

EVB_SY22743UFAC

The EVB_SY22743UFAC is intended for evaluating  AC 176~264V input, 400V/100mA output Boost PFC Regulator

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12
SO8 2022-05-20