SY23431FAP (SY52441FAP)

Secondary Side Synchronous Rectifier

SY23431FAP Secondary Side Synchronous Rectifier Datasheet

Parameters
Features
Description

Part number	SY23431FAP
Topology	Flyback
Integrated FETs(Yes/No)	YES
Integrated FETs type	MOS
Drain current (Conti.) (A)	19
Breakdown voltage (V)	100V
Ron (typ) (mΩ)	8
ZVS function	NO
Operation mode	CCM/QR/DCM
Dual supply channel	YES
Features	Drain voltage falling slope rate detection,Drain voltage blanking time detection,Wide Vout
Package	SO8
Operating temperature range(°C)	-40 to 125
Functional safety category

Suitable for CCM, DCM, and QR Flyback Converters
DRAIN Falling Slope Rate Detection to Avoid False Turn-On of SR MOSFET by Parasitic Ringing
DRAIN High Voltage Blanking Time Detection to Enhance System ESD Performance
Dual Source Power Supply for 3.3V to 21V Output Systems
Compact Package: SO8

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Evaluation Board

Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board
Photo of evaluation board

EVB_SY23431FAP

The EVB_SY23431FAP is intended for evaluating Secondary Side Synchronous Rectification

Technical Documentation

Title	Date
Silergy_Catalog_Q3_2026	2026-11-04
SO8	2022-05-20