New Discrete Fibonacci Charge Pump Design, Evaluation and Measurement

Abstract

This paper focuses on the practical aspects of the realisation of Dickson and Fibonacci charge pumps. Standard Dickson charge pump circuit solution and new Fibonacci charge pump implementation are compared. Both charge pumps were designed and then evaluated by LTspice XVII simulations and realised in a discrete form on printed circuit board (PCB). Finally, the key parameters as the output voltage, efficiency, rise time, variable power supply and clock frequency effects were measured.

Keywords

• Dickson charge pump
• Fibonacci charge pump
• voltage gain
• output series resistance
• rise time
• efficiency