Patent ID: 8653804

Claim:
A discontinuous conduction current mode maximum power limitation photovoltaic converter connecting to a ground and a solar cell having a temperature compensation signal and an output power and being solarized and comprising a direct current/direct current voltage converter connecting to the solar cell, comprising an input terminal and an output terminal, offering a stable voltage and having an output voltage signal and an inner current; and a maximum power control circuit connecting to the direct current/direct current voltage converter and the solar cell, controlling the direct current/direct current voltage converter to limit the output power of the solar cell to maximum and comprising a temperature compensation feedback circuit connecting to the input terminal of the direct current/direct current voltage converter and transmitting the temperature compensation signal of the solar cell; an output voltage feedback circuit connecting to the output terminal of the direct current/direct current voltage converter and transmitting the output voltage signal of the direct current/direct current voltage converter; a current detection circuit connecting to the direct current/direct current voltage converter and detecting the inner current of the direct current/direct current voltage converter; and a main control circuit comprising an output and connecting to the solar cell and outputting a control signal to limit the output power of the solar cell to maximum according to the temperature compensation signal, the output voltage signal and the inner current; wherein the temperature compensation feedback circuit further comprises at least one temperature sensor sensing the temperature of the solar cell; a main temperature compensation circuit comprising an input connecting to the temperature sensor; and an output; a first voltage divider comprising an input connecting to the input terminal of the direct current/direct current voltage converter; and an output; a first subtractor comprising an anode connecting to a first reference voltage; a cathode connecting to the output of the main temperature compensation circuit and generating an input voltage; and an output outputting an output voltage that is the first reference voltage subtracts the input voltage of the cathode of the first subtractor; and a second subtractor comprising an anode connecting to the output of the first voltage divider and generating an input voltage; and a cathode connecting to the output of the first subtractor and generating an input voltage; and an output outputting an output voltage that the input voltage of the anode of the second subtractor subtracts the input voltage of the cathode of the second subtractor.