DC converter and control method thereof

The invention discloses a direct-current converter and a control method thereof, the direct-current converter comprises a main side and a secondary side, the main side is provided with a switching device, and the method comprises the following steps: obtaining an input voltage and an input current of the main side, and obtaining an output voltage of the secondary side; determining the working state of the DC converter by using the input voltage, the input current and the output voltage; and adjusting a control signal of the switching device according to the working state. Through the above mode, the output current does not need to be sampled, the method can be suitable for more types of control modules, and the change of the circuit is reduced. 本申请公开了直流变换器及其控制方法，该直流变换器包括主边侧和副边侧，主边侧设置有开关器件，该方法包括：获取主边侧的输入电压和输入电流，以及获取副边侧的输出电压；利用输入电压、输入电流和输出电压确定直流变换器的工作状态；根据工作状态调整开关器件的控制信号。通过上述方式，无需对输出电流进行采样，能够适用于更多类型的控制模块，减少对电路的改动。