Full-bridge power converter

A full-bridge power converter, comprising:

• a transformer circuit;
• an input-side circuit, coupled to a primary circuit of the transformer circuit, comprising:
• an input-side full-bridge circuit, comprising a first power switch, a second power switch, a third power switch, and a fourth power switch;
• and
• an input inductor, coupled between a positive power terminal of a battery module and the input-side full-bridge circuit;
• an output-side circuit, comprising:
• an output-side full-bridge circuit, coupled to a first terminal of a load, a second terminal of the load, and a secondary circuit of the transformer circuit;
• and
• an output capacitor, coupled between the first terminal of the load and the second terminal of the load;
• and
• a controller, coupled to the input-side circuit and the output-side circuit, configured to:
• turning on the first power switch, the second power switch, the third power switch, and the fourth power switch during a first period, causing the transformer circuit to release an electric energy stored in the transformer circuit, and
• turning on the first power switch, the second power switch, the third power switch, and the fourth power switch during a second period after the first period, and controlling the output-side full-bridge circuit to precharge the output-side full-bridge circuit by using an energy stored in the output capacitor,
• wherein a switching time point at which the first period is switched to the second period is determined by the load.