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SY5951AFAC

Production
Charge Pump PFC LLC Controller, High PF, Low THD
Datasheet
SY5951AFAC Charge Pump PFC LLC Controller, High PF, Low THD Datasheet
Part number SY5951AFAC
Description
Topology
Dimming mode
PF (>) 0.9
Input type 230Vac
Iout (max) (A)
Pout (max) (W)
Package SO8
Application
  • Charge Pump PFC LLC Topology with Low BOM Cost
  • PF>0.95, THD<20%  Primary Side ILED Regulation and Less than 5% ILED Ripple
  • Short LED Protection (SLP)
  • Open LED Protection (OLP)
  • E-cap over Voltage Protection (OVP)
  • Adaptive Prevent Capacitive Mode
  • Compact Package: SO8

The SY5951A is an LLC controller used in charge pump PFC application. Both high PF and low LED current ripple are achieved with inherent PFC function. The integrated high side driver and primary side regulation save BOM cost a lot. Meanwhile, LLC topology improves efficiency and EMI.

Evaluation Board

  • 2026-04-30_152730

    Photo of evaluation board

EVB_SY5951AFAC

The EVB_SY5951AFAC is intended for evaluating Charge Pump PFC LLC Controller with Primary Side Regulation for LED Lighting

Technical Documentation

Title Date
Silergy_Catalog_Q2_2026 2026-06-12