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Reference design enables a secondary side microcontroller to control primary power
In modern offline AC/DC power solutions, programmability and adaptive control provide the flexibility and intelligence required by smart home devices to better interface with their power systems. In these systems, a secondary side MCU is generally not able to start a system without utilising a separate bias power supply. A new reference design from Microchip Technology solves this problem using the MCP1012 high voltage auxiliary AC/DC controller, exhibiting the ability to remove the independent bias power supply in many applications. The offline auxiliary device allows the system to transfer control of the power and duty cycle to a secondary MCU. The control between the system and the load can be more precise and purposefully coupled, through a design that is able to be simplified, decreasing size and cost.