Ripple Cancellation of PWM Power Converters by Magnetically Integrated Filter Technology

If the ripple current is subtracted from the output current of a PWM converter after separation of the low-frequency component, it is theoretically possible to generate an output current free of ripple. In the following, it is shown how the number of components as well as the construction volume and weight can be significantly reduced by combining the inductive components required for this purpose into one single component.