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SY22748FAC (SY59516FAC)

Production
Charge Pump PFC LLC Low Side Controller, High PF, Low THD
Datasheet
SY22748FAC Charge Pump PFC LLC Low Side Controller, High PF, Low THD Datasheet
Part number SY22748FAC
Description PSR, CC, ZVS, Charge pump, LLC PFC regulator, 4 drain, low side, with 500V/1.1Ω MOS
Topology LLC
Dimming mode Non-dimming
PF (>) 0.9
Input type 230VAC
Iout (max) (A)
Pout (max) (W) 45
Package SO8
Application LLC, non dimming, PFC
  • Integrated 500V MOSFET
  • Charge Pump PFC LLC Topology with Low BOM Cost
  • PF>0.95, THD<20%
  • Primary Side ILED Regulation and Less than 2% ILED Ripple
  • Short LED Protection (SLP), Open LED Protection (OLP), E-cap over Voltage Protection (HV OVP)
  • Zero Voltage Overshoot on Resonant Capacitor at Startup
  • Compact Package: SO8

SY22748 is the low side LLC controller integrated with a 500V MOSFET, it is used in charge pump PFC application. High PF is achieved by inherent PFC function and low LED current ripple is achieved by LLC topology. Single stage structure and primary side regulation save BOM cost a lot. Meanwhile, LLC topology improves efficiency and EMI.

It should work with SY22749, which is the high side LLC controller integrated with a 500V MOSFET

Evaluation Board

  • 2023-03-03_101559

    Photo of evaluation board

EVB_SY22748FAC

The EVB_SY22748FAC is intended for evaluating  AC 198~264V input, 42V/1.01A output Charge Pump PFC LLC Controller, High PF, Low THD

Technical Documentation

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