Isolated signal multiplier for PWM constant current source conversion

The invention relates to the industrial voltage current sensing information technical field, concretely an isolated signal multiplier for PWM constant current source conversion. The isolated signal multiplier comprises a DC-DC power supply isolation unit connected to a main processor unit and a PWM unit, and used for providing a working voltage for the main processor and the PWM unit; the main processor having the input terminal receive one path of collection signals, generating PWM signals, and outputting the PWM signals to the input terminal of the PWM unit; and the PWM unit connected to the main processor, and used for performing PWM modulation according to received PWM signals to generate two paths of output voltage. The input signals of the isolated signal multiplier are a path of AD collection signals, and two paths of independent output guarantee the load capability of a rear terminal, thereby meeting the data acquisition demand of more devices. Interference signals can be filtered, each part of a circ