Title :
Analysis and Design of a Charge Pump Circuit for High Output Current Applications
Author :
Van Steenwijk, Gijs ; Hoen, Klaas ; Wallinga, Hans
Author_Institution :
MESA Research Institute, University of Twente, PO. Box 217, NL-7500 AE Enschede, The Netherlands. tel.: x-31-53-892754, fax.: x-31-53-341903
Abstract :
A charge pump circuit has been developed that can deliver high currents even for a system supply voltage of 3 V. The circuit consists of capacitances, connected by MOS switches. The influence of the on-resistance of the switches on the circuit´s output resistance has been analysed. The switches are implemented by PMOS transistors. The source bulk potential of these transistors is kept constant to prevent an increase in threshold voltage of the transistors. The maximum output voltage is determined by the breakdown voltage of the switches and not by the MOST´s threshold voltage. The circuit has been realised and measurement results match with the calculated values.
Keywords :
Charge pumps; Clocks; Diodes; EPROM; Equations; MOS capacitors; MOSFETs; Switches; Switching circuits; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference, 1993. ESSCIRC '93. Nineteenth European
Conference_Location :
Sevilla, Spain
Print_ISBN :
2-86335-134-X
