Design and Implementation of an Improved Charge Pump Using Voltage Doubler as Clock Scheme

Charge pumps are circuits that can pump charge upwards to produce voltages higher than the regular supply voltage. Novel MOS charges pump utilizing Voltage Doubler for producing clock which is double the magnitude that of input voltage supply. In this proposed paper by using Voltage Doubler as clock scheme the clocks produced in voltage form are amplified increasing the potential at every node of the circuit. By using this structure fewer charge pump stages are required to obtain the required output voltage. This Present charge pump circuit is implemented as a combination of charge pump using dynamic charge transfer switches and Voltage Doubler in this work using 0.25μm technology in Mentor Graphics DA-IC Station 2008.2o. A four stage enhanced charge pump is designed to produce 7-8V output from a 1V supply using non-overlapping clock signal generated by Voltage Doubler that drive the charge pump circuit.