Multi-path interleaving self-adaptive current sharing control circuit

The utility model discloses a multi-path interleaving self-adaptive current-sharing control circuit in the field of switching power supply circuits, which comprises a multi-path parallel output circuit, a voltage outer loop PID (Proportion Integration Differentiation) control circuit and a multi-path current inner loop PID control circuit, the total output of the multiple paths of parallel output circuits is connected with one input end of the voltage outer loop PID control circuit through the resistance voltage division circuit, the other input end of the voltage outer loop PID control circuit is connected with the voltage stabilization reference circuit, and the output results of the current inner loop PID control circuit are in one-to-one correspondence with the control of the parallel output circuits. According to the utility model, inductive current sampling is carried out through the current transformer, inductive current is introduced into inner loop control as a control variable, automatic current sha