LVCMOS based energy efficient solar charge sensor design on FPGA

Abstract

The performance and life span of energy storage solar battery depends on its charging and discharging. Solar charge controller regulates the rate of charging and discharging of battery for its smooth and efficient operation. Solar charge sensor, component of charge controller is used to invoke full charge alarm and also discharge alarm as per the voltage level of battery. Solar charge sensor consumes certain power. LVCMOS I/O standards is the low voltage complementary metal oxide semiconductor. There are 4 different LVCMOS available in 28nm technology based Artix-7 FPGA. We are proposing I/O standards for solar charge sensor in order to achieve energy efficiency with solar charge sensor. There is 60% reduction in I/O power, when we use LVCMOS15 in place of LVCMOS33 in solar charge sensor design at 900MHz. Similarly, we are saving 51.85% I/O power, when we use LVCMOS18 in place of LVCMOS33 in solar charge sensor design operating at 5 GHz. Similarly, we are saving 32.31% IO power, when we use LVCMOS25 in place of LVCMOS33 in solar charge sensor design operating at 60 GHz.