SY23418VFAC (SY50218VFAC)

Flyback Regulator with Primary Side CV/CC Control

SY23418VFAC Flyback Regulator with Primary Side CV/CC Control Datasheet

Parameters
Features
Description

Part number	SY23418VFAC
Pout (max) (W)	24
HV startup	NO
Operation mode	QR
Integrated FETs type	MOS
Breakdown voltage (V)	650
Ron (typ) (mΩ)	1.2
No load loss (mW)	<75
Switching frequency (min)(kHz)	0.5
Switching frequency (max)(kHz)	125
Features	PSR CC/CV,Cable compensation
Package	SO8
Operating temperature range(°C)	-40 to 125
Functional safety category

Tight PSR CC/CV Regulation Over Entire Operating Range
QR-mode Operation for High Efficiency
PWM/PFM Control for High Average Efficiency
Fast Dynamic Load Transient Response
Cable Compensation for Better Load Regulation
Low Start Up Current: 5μA Max
Minimum Frequency Limitation 500Hz
No-load Power is Less than 50mW
Reliable Protections for OVP, SCP, OTP, OCP
Reliable Protections for Safety Requirement
Maximum Switching Frequency Limitation 125kHz
Integrated 650V/1.2ΩMOSFET
Compact Package: SO8

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Evaluation Board

Photo of evaluation board
Photo of evaluation board

EVB_SY23418V

The EVB_SY23418V is to evaluate Flyback Regulator with Primary Side CV/CC Control SY23418V.

Technical Documentation

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