A flyback controller is an integrated circuit used in power electronics to regulate the conversion of electrical energy in devices like chargers, adapters, and power supplies. It manages the switching of a transformer, allowing efficient voltage conversion and isolation between input and output. Flyback controllers are popular for their ability to deliver stable power in compact designs, making them ideal for consumer electronics. While not a cybersecurity device, secure power management is essential in protecting sensitive electronics from voltage fluctuations, which can be exploited in certain attack scenarios.