This DC-DC Step-Down Converter Power Supply Module provides all the active functions for a step-down switching regulator, capable of driving a load up to 0.5A with excellent line and load regulation. This module comes with the fixed value of input i.e. 12V as well as fixed output voltage which is 5V 0.5A. The circuit board converts an input voltage of 12V DC into a 5V DC output. The circuit has an IC (34063API) which steps down the voltage from 12V DC to 5V AC. The circuit consists of resistors and capacitors, which act as filters. The resistors and capacitors smooth the current and the voltage flow giving an approximate, average voltage value that is required.