High-precision power supply linear calibration system for DC-DC

The utility model discloses a DC-DC high-precision power supply linear calibration system, comprising a tool plate, the tool plate is provided with a calibration circuit, the calibration circuit comprises a plurality of first switches, the plurality of first switches are connected in parallel, and the fixed end of each first switch is connected with a signal transmission interface; the plurality of second switches are connected in parallel, the movable end of each second switch is connected with a resistor, and one ends of the plurality of resistors are connected with one another and then are connected with the movable ends of the plurality of first switches which are connected in parallel; and the row seat P1 is connected with the fixed ends of the plurality of second switches which are connected in parallel. According to the utility model, after the DC-DC power supply is calibrated, the voltage control precision and the sampling precision of the DC-DC power supply are relatively high, so that the requiremen