SY22824BABT (SY5072BABC)

Single-Phase Transition-Mode PFC Controller

SY22824BABT Single-Phase Transition-Mode PFC Controller Datasheet

Parameters
Features
Description

Part number	SY22824BABT
Description	Boost CV PFC controller, QR, 70mA source and 400mA sink
Topology	Boost
Dimming mode	Non-dimming
PF (>)	0.9
Input type	120VAC, 230VAC
Iout (max) (A)
Pout (max) (W)	300
Package	SOT23-6
Application	Boost CV, PFC

Valley Turn-on to Achieve Low Switching Losses
Frequency Reduce in Light Load
Internal High Current MOSFET Driver: 70Ma Sourcing and 400mA Sinking
MOSFET Over-Current Protection (OCP)
Internal THD Optimization to Achieve Low THD
Internal Transition Optimization
Compact Package: SOT23-6

The SY22824B is a constant voltage Transition-Mode boost controller with Power Factor Correction (PFC) function. Constant ON Time control is applied to achieve high PF and low THD without multiplier. It drives the Boost converter in the Quasi-Resonant mode for high efficiency and better EMI performance. It adopts special design to achieve quick start up and reliable protection for safety requirement.

Evaluation Board

Photo of evaluation board
Photo of evaluation board

EVB_SY22824BABT

EVB File

The EVB_SY22824BABT is intended for evaluating AC 90~240V input, 350V output Single-Phase Transition-Mode PFC Controller

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12