Design of CMOS DC-DC converter for WSN/IOT applications

This paper proposed DC-DC converter with DT-CMOS Switch. The proposed circuit is designed for evaluating and compared with CMOS switch by both circuit simulation and device simulation. This DT-CMOS SWITCH reduces the output ripple and the conduction loss through a low on resistance. Therefore, proposed converter has excellent performance efficiency than converter with conventional CMOS switch. Simulations of eight phases phase locked loop circuit in 0.13 m standard CMOS technology reveal that the proposed charge pump circuit has given an input supply voltage of 1 V that has the output voltage of 6.7 V, which reaches the efficiency is 75%. Supplying a 5-mA load current maintains a power supply as well as 50 percent efficiency and a voltage output of above 5 volts. The proposed charge pump circuit employs body biasing and charge transfer switches to drastically reduce leakage while also increasing voltage. The result of simulation reveals that the proposed charge pump circuits perform better in terms of voltage pumping gain and power efficiency.