SY23329FIB (SY50329FIB)

PWM/PFM Mode SSR Flyback Converter

Part number	SY23329FIB
Pout (max) (W)	30
HV startup	YES
Operation mode	CCM/DCM
Integrated FETs type	MOS
Breakdown voltage (V)	700
Ron (typ) (mΩ)	1.9
No load loss (mW)	<50
Switching frequency (min)(kHz)	23.5
Switching frequency (max)(kHz)	100
Features	SSR CV,Pseudo fixed frequency
Package	DIP7
Operating temperature range(°C)	-40 to 125
Functional safety category

Secondary Side Regulation
Integrated 700V Power MOSFET
HV Start-Up
100kHz Switching Frequency
Pseudo-Fixed Frequency Control to Eliminate Slope Compensation for CCM (Duty Cycle>50%)
PFM Control for High Average Efficiency
Burst Mode Control for High Light Load Efficiency
23.5kHz Minimum Switching Frequency to Eliminate Audible Noise
Frequency Modulation to Reduce EMI Noise
Internal Soft-Start Process
Programmable Input BO/OVP Through PRT Pin
OLP, VCC OVP, OTP, Secondary Diode SCP
Compact Package: DIP7

EVB_SY23329FIB

The EVB_SY23329FIB is intended for evaluating PWM/PFM mode SSR Flyback Switcher with Peak Power Function

Title	Date
Silergy_Catalog_Q3_2026	2026-11-04