I am currently an undergrad engineering student at the University of Toronto. For my project, I need to use a flyback converter whose duty cycle is controlled by a microcontroller or a microchip. At the start of the design, the microcontroller might not be powered yet. Therefore, I was wondering if there was a way in which the duty cycle of the flyback converter could be pre-set or if it has a default duty cycle? The microcontroller will be powered by the flyback and it will take a voltage-temperature sensor's output as an input, quantize it and transmit it on a transmitter.
Thank you for your help.