DC to DC converters are quite popular among electronic enthusiasts and are widely used within the industry. There are three major types of non-isolated DC to DC converters: buck, boost, and buck-boost. In this article/video, I used there major components such as the famous UC3843 chip, a power Schottky diode, and an N-Channel Mosfet to design a compact DC to DC boost converter. The input voltage could be as low as 9V that makes it suitable for a variety of applications, such as 12V to 18V conversion to power a laptop computer using a single 12V battery.
I used Altium Designer 21 and SamacSys component libraries to design the schematic and PCB. The PCBs have been fabricated by the PCBWay in the green solder mask. Also, I examined the noise figure of the circuit using the Siglent SDS2102X Plus/SDS1104X-E oscilloscope and Siglent SDM3045X multimeter. So let’s get started!
: MBR20100CT datasheet: https://www.diodes.com/assets/Datasheets/MBR20100C.pdf
: IRFZ44 datasheet: https://componentsearchengine.com/Datasheets/2/IRFZ44EPBF.pdf
: Altium Designer: Altium Designer - PCB Design Software
: SamacSys Altium plugin: https://www.samacsys.com/altium-designer-library-instructions
: Supported SamacSys plugins: FREE Schematic Symbols & PCB Footprints - PCB Libraries - 3D
: UC3843 schematic symbol, PCB footprint, 3D model: https://componentsearchengine.com/part-view/UC3843D8TR/Texas%20Instruments
: IRFZ44 schematic symbol, PCB footprint, 3D model: IRFZ44EPBF footprint, schematic symbol and 3D model by Infineon
: MBR20100 schematic symbol, PCB footprint, 3D model: Component Search Engine - Free access to schematic symbols, PCB footprints and 3D models
: Siglent SDL1020X-E DC load: SDL1000X/X-E DC Electronic Loads | Siglent Electronic Load
: Siglent SDS2102X Plus oscilloscope: https://siglentna.com/digital-oscilloscopes/sds2000xp/
: Siglent SDS1104X-E oscilloscope: SDS1000X-E Super Phosphor Oscilloscopes | Siglent SDS1000X