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SY22749FAC (SY59515FAC)

Production
Charge Pump PFC LLC Low Side Controller, High PF, Low THD
Datasheet
SY22749FAC Charge Pump PFC LLC Low Side Controller, High PF, Low THD Datasheet
Part number SY22749FAC
Description PSR, CC, ZVS, Charge pump, LLC PFC regulator, 4 drain, high 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
  • Over Current Protection (OCP), Over Temperature Protection (OTP), Thermal Fold Back (TFB), Adaptive Prevent Capacitive Mode Function
  • Zero Voltage Overshoot on Resonant Capacitor at Startup
  • Compact Package: SO8

SY22749 is the high 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 SY22748, which is the low side LLC controller integrated with a 500V MOSFET.

Technical Documentation

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