SY22818CFAP (SY5033CFAP)

CCM+QR SSR Flyback Controller

Part number	SY22818CFAP
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
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
Comprehensive Protections Including BO, Input OVP, 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_SY22818CFAP

The EVB_SY22818CFAP is intended for evaluating SSR Flyback Controller for Quick Charger

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12