Comparison of Low Power CMOS Voltage Reference Circuit Using Different Types of Charge Pumps

Abstract

Background: The voltage reference circuits are mainly used in the portable devices like mobiles, laptops for the long battery runtime. Due to this voltage reference circuits the circuit can be operated in the very low supply voltage because of this the power consumption of the circuit can be reduced. Method Adopted: In this paper the low power Complementary Metal-Oxide-Semiconductor (CMOS) voltage has been designed by using the conventional charge pump and to achieve the better low power consumption voltage reference circuits and high constant voltage reference different types of charge pumps like Dickson charge pump and the Static Charge Transfer Switch (CTS) charge pump has been replaced in the place of the conventional charge pump. The conventional CMOS volatge reference circuit has the power consumption of 1.007μW and the constant voltage reference of 210mV. Findings: By using the Dickson charge pump the power consumption has been reduced to 1.389μW and the constant voltage reference has been icreased to 231mV. Similarly by using by using the Static (CTS) charge pump the power consumption has been reduced to 0.803μW and the constant voltage reference has been icreased to 229.03mV compared to the reference voltage circuit using the conventional charge pump. Improvements: The CMOS voltage reference circuit has been designed by using the two types of the charge pump Dickson charge pump and the Static CTS charge pump and all the power consumption and the constant voltage reference circuits has been compared.