SY22818AFAP (SY5033AFAP)

CCM+QR SSR Flyback Controller

Part number	SY22818AFAP
Pout (max) (W)	100
HV startup	YES
Operation mode	CCM/QR
Driving FETs type	MOS
No load loss (mW)	<50
Switching frequency (min)(kHz)	28
Switching frequency (max)(kHz)	90
Features	Wide VCC range,Pseudo fixed frequency,Current limit
Package	SO8
Operating temperature range(°C)	-40 to 125
Functional safety category

Wide VCC Operating Range: 10~90V
HV Start up
Mixed CCM+QR Control Strategy
Pseudo Fixed Frequency Control to Eliminate Slope Compensation under CCM
65kHz Fixed Switching Frequency under CCM
90kHz Switching Frequency Limit under QR Mode
Frequency Fold Back for High Average Efficiency
Minimum Switching Frequency Limited to 28kHz
Burst Control for High Light Load Efficiency
Adaptive Peak Current Limit for LPS
Comprehensive Protections Including BO, Output OVP/UVP, VCC OVP, OLP, External OTP, OTP, Secondary SR MOS SCP, etc
Gate Drive Capability: +70mA/-500mA
Internal Soft Start Process
Compact Package: SO8

EVB_SY22818AFAP

The EVB_SY22818AFAP is intended for evaluating SSR flyback controller for quick charger

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