Abstract: A multi-input power manager includes: first to n-th maximum power point tracking circuits for respectively receiving first to n-th powers from the outside and controlling voltages of first to n-th nodes to be first to n-th reference voltages based on the first to n-th powers; first to n-th input capacitors which respectively store the first to n-th powers by control of the first to n-th maximum power point tracking circuits, and are respectively connected to the first to n-th nodes; first to n-th transfer switches which are respectively connected to the first to n-th nodes, and output powers respectively stored in the first to n-th input capacitors, responding to first to n-th transfer switching signals; and a transfer switch control circuit which compare the first to n-th reference voltages and the voltages of the first to n-th nodes respectively, and generate the first to n-th transfer switching signals accordingly.

Abstract: An electronic circuit includes an electricity generating element circuit outputting an input voltage and an input current according to a temperature of an electricity generating element, a current detecting circuit detecting the input current, a power tracking control circuit receiving the detected input current, detecting the input voltage, and outputting a control signal, a switch selecting circuit selectively outputting switch selection signals in response to the control signal, a switch circuit adjusting a resistance value of a resistor according to the switch selection signals that are selectively output from the switch selecting circuit, the resistor being connected to an output terminal of the electricity generating element circuit, and a transformer transforming the input voltage to output an increased voltage, wherein the power tracking control circuit adjusts the control signal such that power according to the input current and the input voltage is maintained in a reference ratio.

Abstract: Provided is a current-voltage conversion amplifier circuit including: a plurality of light receiving devices generating a current signal proportional to an amount of light by receiving the light; multipliers amplifying the current signal, converting the amplified current signal into a first voltage signal, outputting the amplified current signal, or outputting the converted first voltage signal; multi input amplifiers outputting first and second output voltage pairs through a process for receiving output values of multipliers and an offset voltage and amplifying the received output values and offset voltage; a multiplexing unit selecting and outputting one first and second output voltage pair among the first and second output voltage pairs outputted from multi input amplifiers; and a signal conversion unit converting a difference value between first and second output voltages outputted from the multiplexing unit and outputting the converted digital signal.

Abstract: Provided is a current-voltage conversion amplifier circuit including: a plurality of light receiving devices generating a current signal proportional to an amount of light by receiving the light; multipliers amplifying the current signal, converting the amplified current signal into a first voltage signal, outputting the amplified current signal, or outputting the converted first voltage signal; multi input amplifiers outputting first and second output voltage pairs through a process for receiving output values of multipliers and an offset voltage and amplifying the received output values and offset voltage; a multiplexing unit selecting and outputting one first and second output voltage pair among the first and second output voltage pairs outputted from multi input amplifiers; and a signal conversion unit converting a difference value between first and second output voltages outputted from the multiplexing unit and outputting the converted digital signal.

Abstract: A DC-DC boost converter for a power generation element includes a power generation element configured to generate a both end voltage and a power supply current, an inductor charged by the power supply current, a first and second switch units comprising a plurality of first and second transistors, an MPPT control unit configured to detect the both end voltage and output a control signal to the first and second switch units so that an input voltage output from the power generation element is maintained as a predetermined proportion of the both end voltage, a current detection unit configured to output a signal for controlling the number of enabled first transistors and second transistors according to an intensity of the power supply current, and a switch selection unit configured to connect the first transistors and the second transistors through the signal.