Intelligent Multi-Mode Flyback Controller Integrated with High Voltage MOSFET



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


HY1603C is an intelligent digital multi-mode Flyback controller. The newly developed architecture is inherent features to meet regulatory requirements from around the world.

HY1603C integrates rich protections and features such as, slope compensation, VCC over voltage protection, transformer short protection, sense resistor short protection over-temperature protection.

HY1603C is available with the SOT23-6 package.


· Intelligent Digital Multi-Mode Control

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

· Audio noise free

· Support external NTC

· 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  

§   VCC OVP 

§   Transformer Saturation Protection

§   Output Over Load Protection   

§   Current Sensor Resistor Short Protection

§   Over Temperature Protection 

·  Power Consumption < 75mW

·  Low Start-Up Current (<3µA)

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