DC to DC Boost Converter using UC3843

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!

Article: https://bit.ly/3eYUzi3

[1]: Altium Designer: https://www.altium.com/altium-designer

[2]: SamacSys Altium plugin: https://www.samacsys.com/altium-designer-library-instructions

[3]: Supported SamacSys plugins: https://www.samacsys.com/pcb-part-libraries

[4]: UC3843 schematic symbol, PCB footprint, 3D model: https://componentsearchengine.com/part-view/UC3843D8TR/Texas Instruments

[5]: IRFZ44 schematic symbol, PCB footprint, 3D model: https://componentsearchengine.com/part-view/IRFZ44EPBF/Infineon

[6]: MBR20100 schematic symbol, PCB footprint, 3D model: https://componentsearchengine.com/part-view/MBR20100CT-E1/Diodes Inc

[7]: Siglent SDL1020X-E DC load: https://siglentna.com/dc-electronic-load/sdl1000x/

[8]: Siglent SDS2102X Plus oscilloscope: https://siglentna.com/digital-oscilloscopes/sds2000xp/

[9]: Siglent SDS1104X-E oscilloscope: https://siglentna.com/digital-oscilloscopes/sds1000x-e-series-super-phosphor-oscilloscopes/