Dc-dc converter

A DC-DC converter, comprising:

• a switching buck regulator including a driver and configured to output a first output signal, the driver configured to drive a first power switch and a second power switch;
• a feed forward circuit connected to the switching buck regulator and including an adder the feed forward circuit configured to generate a second output signal by performing a first operation on the first output signal, and output the first output signal and the second output signal using the adder;
• and
• a controller connected to the adder, the controller including a first voltage controlled oscillator, a second voltage controlled oscillator, a voltage controlled delay line, and a phase detector,
• wherein the controller is configured to convert the first output signal and the second output signal into a time domain, perform a second operation on the converted first output signal and the converted second output signal, and perform a third operation to compensate for on a signal on which the second operation has been performed.

A DC-DC converter, comprising:

• a switching buck regulator including a driver configured to output a switching signal for driving a first power switch and a second power switch based on a driving signal, the switching buck regulator configured to output a first output signal;
• a feed forward circuit connected to the switching buck regulator, the feed forward circuit including a first buffer, an RC filter, a second buffer, and an adder sequentially on a feed forward path, the feed forward circuit configured to output the first output signal together with a second output signal using the adder;
• and
• a controller including a voltage controlled delay line connected to a first voltage controlled oscillator and a phase detector connected to a second voltage controlled oscillator, the controller configured to convert the first output signal and the second output signal into a time domain, and generate the driving signal based on at least one of the converted first output signal or the converted second output signal.