This project is intended to create circuit control DC Solar Pump. Using a microcontroller dsPIC30f2010 control Buck Converter circuit because the Buck Converter can step-down output voltage and step-up output current. This helps in star motor is made, the pump can operate while the low light and you can also keep track of the maximum power point of a solar cell. By circuit design that can accept input voltage must not exceed 40 volts incoming currents up to 10 amperes and use a pump with a maximum 250 Watts from the experimental results concluded that the circuit can be paid the maximum power point tracking throughout the day. Experimental operation of pumps connected directly with a solar panel does not work. But if you continue through the cycle the pump can work by pumping approximately 10,000 litres of water can be pumped about 8 hours per day and 86 percent cycle efficiency.