DEVICE FOR PROTECTING A FLYBACK CONVERTER CAPABLE OF SUPPLYING OPERATING POWER TO A LOAD USING A FLYBACK TRANSFORMER

摘要

PURPOSE: A device for protecting a flyback converter is provided to prevent a PWM(Pulse Width Modulation) signal when an over-voltage is generated, thereby preventing damage due to the over-voltage.;CONSTITUTION: A device for protecting a flyback converter comprises a PWM signal generating unit(100), a flyback transformer(110), and an over-voltage detecting unit(130). The PWM signal generating unit generates a PWM signal. The flyback transformer supplies operating power to a load by inducing the operating power from a primary coil to secondary coils by the PWM signal. The over-voltage detecting unit detects whether an over-voltage is induced into the secondary coils of the flyback transformer and prevents a PWM signal when an over-voltage is induced.;COPYRIGHT KIPO 2011