Power converter with over temperature protection compensation

A power converter with over temperature protection compensation, comprising:

• a main conversion unit having a primary side and a secondary side, the primary side coupled to an input voltage, the secondary side coupled to a secondary rectifier filter circuit,
• a primary-side control unit coupled to the primary side,
• a secondary-side control unit coupled to the primary-side control unit,
• a secondary detection circuit coupled to the secondary side, and
• an over temperature adjustment circuit coupled to the secondary-side control unit,
• wherein the secondary-side control unit is configured to obtain a secondary voltage change value corresponding to the change in the input voltage through the secondary detection circuit, and the secondary-side control unit is correspondingly configured to provide a current change value to the over temperature adjustment circuit according to the secondary voltage change value;
• the over temperature adjustment circuit is configured to provide a temperature control voltage according to the current change value so that the secondary-side control unit is configured to determine whether an over temperature protection is activated according to the temperature control voltage;
• wherein the secondary-side control unit is configured to turn off the main conversion unit through the primary-side control unit to activate the over temperature protection, or the power converter further includes a protection switch, the protection switch is coupled to the secondary rectifier filter circuit, and the secondary-side control unit is configured to turn off the protection switch to activate the over temperature protection.