DC-DC converter, bidirectional DC-DC converter and control method

The invention discloses a DC-DC converter, a bidirectional DC-DC converter and a control method. The DC-to-DC converter includes: a transformer; first and second switching circuits respectively coupled to one of both sides of the transformer and each including at least two switches; the first current detection module is coupled to one side of the transformer and detects the current of the side; a first conversion module coupled to the output of the first current detection module and converting a current signal received from the output into a voltage signal; a first comparison module coupled to the output of the first conversion module, comparing the voltage signal received from the output with a reference voltage signal, and generating a first modulation signal based on a comparison result; and a first controller coupled to an output of the first comparison module and generating a first control signal for at least one switch in the second switching circuit based on the first modulation signal and a driving si