DRAFT: This module has unpublished changes.

A synchronous DC-DC Buck Converter features the implementation of a conventional DC-DC Buck converter circuit, with the replacing of an additional switching transistor in place of the diode. The two transistors will be operating synchronously and in a manner such that when one is conducting, the other is not. When the transistor (Q1) connected to the source is conducting, energy will flow through and be stored in the inductor. When the transistor (Q2) in place of the diode is conducting, current will flow from the inductor to the load. The parameters of frequency and duty cycle will control this flow of energy and directly control the voltage output to the load Vo. Because the input voltage (Vin) will be continuously varying, the frequency and duty cycle of the two switching transistors will also be varying to maintain a constant voltage level at the output terminals. The capacitor connected in parallel with the output terminals serves the purpose of controlling the amount of ripple at the output voltage.

 

Lead Acid Charge System:

Depending on the state of the power output of the solar panel the microcontroller will control which charging configuration will deploy. The three configurations consist of High Current Battery Charge, Trickle Charge and Battery to Load. 

DRAFT: This module has unpublished changes.