Extending the Supply Voltage of a 600 V Input, No-Optocoupler Isolated Flyback Controller to 800 V or Higher-By Yuchen Yang, Senior Applications Engineer, and William Xiong, Applications Engineer, Analog Devices-MAGAZINE BODO POWER MARCH 2021

 Extending the Supply Voltage of a 600 V Input, No-Optocoupler Isolated Flyback Controller to 800 V or Higher 

By Yuchen Yang, Senior Applications Engineer,

and William Xiong, Applications Engineer, Analog Devices

In traditional isolated high voltage flyback converters, tight regulation is achieved using optocouplers to transfer regulation information from the secondary-side reference circuitry to the primary side. The problem is that optocouplers add significant complexity to isolated designs: there is propagation delay, aging, and gain variation, all of which complicate power supply loop compensation and can reduce reliability. By Yuchen Yang, Senior Applications Engineer, and William Xiong, Applications Engineer, Analog Devices

LINK: https://www.bodospower.com/default.aspx