Method for determining dead time of active clamping flyback circuit

The invention provides a method for determining the dead time of an active clamping flyback circuit, which relates to the technical field of electronic circuits. The method comprises the steps of generating a first voltage through the induction of an acquisition circuit and a primary circuit after a first switching tube is turned off, detecting the size of the first voltage, and determining a second dead time, wherein the first voltage has a corresponding relation with the voltage between the source end and the drain end of the first switching tube, and after the second switching tube is switched off, determining first dead time by using the input voltage, the output voltage, the turn ratio of the primary winding to the secondary winding and the oscillation period. The optimal dead time can be determined, and the purpose of reducing the system loss is achieved. 本申请提供了一种有源钳位反激电路的死区时间的确定方法，涉及电子电路技术领域，该方法包括：在第一开关管关断之后，利用采集电路与原边电路感应产生第一电压，检测第一电压的大小，确定第二死区时间；第一电压与第一开关管的源端和漏端之间的电压具有对应关系；在第二开关管关断之后，利用输入电压、输出电压、原边绕组和