Smart Flyback Converter



Offline Charger
Programmable travel adapter
USB PD Charger
TV / Monitor Standby Power
Notebook Adapter


HYC1603C is an intelligent digital multi-mode Flyback controller integrated with 650V MOSFET. The newly developed architecture is inherent features to meet regulatory requirements from around the world.

HYC1603C integrates rich protections and features such as, slope compensation, VCC over voltage protection, transformer short protection, sense resistor short protection, over-temperature protection.

HYC1603C is available with the SOP8 package.


Flyback PWM Controller

· Intelligent Digital Multi-Mode Control

· Peak Current Mode Control at Burst-Mode /PFM/DCM/CCM

· Over-load Period up to 56ms

· Switching Frequency Dithering to Improve EMI   

· Adaptive MOSFET Gate Drive to Balance Switching Loss and EMI

· Rich Protection Features  


§  Transformer Saturation Protection

§  Current Sensor Resistor Short Protection

§  Output Over Load Protection

§  On chip OTP

· Line Feed-forward Compensation

· Power Consumption < 75mW

· Low Start-Up Current (<3µA)


· 1.9 Ω RDS(ON)

· 100% avalanche tested

· 650V Drain-to-Source break down voltage

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