Arduino MPPT Solar Charge Controller #17 – Buck Converter Efficiency

The new voltage and current sensors on the battery side mean that Watts in and Watts out can be measured and an efficiency percentage calculated. High efficiency values (96% – 97%) are achievable when the buck converter is stepping down from 18v to 12v. With a 72-cell panel and the converter stepping 35v down to 12v, the efficiency drops to around 88%.

Code for this project is now available on my website: and

Post time: Mar-31-2018
WhatsApp Online Chat !