Analysis of Charge Pump Topologies for High Voltage Mobile Microphone Applications

Authors

  • Jakob K. Toft Institute of Electrical Engineering, Technical University of Denmark, Denmark
  • Ivan H. H. Jorgensen Institute of Electrical Engineering, Technical University of Denmark, Denmark https://orcid.org/0000-0002-5759-3631

DOI:

https://doi.org/10.5755/j02.eie.28827

Keywords:

Charge pumps, High voltage techniques, Microelectromechanical systems, Microphones, Silicon-on-insulator

Abstract

This paper presents a novel analysis of charge pump topologies for very high voltage capacitive drive micro electro-mechanical system microphones. For the application, the size and power consumption are sought to be minimized, and a voltage gain of 36 is achieved from a 5 V supply. The analysis compares known charge pump topologies, taking into consideration on resistance of transistors and parasitic capacitances of transistors and capacitors in a 180 nm silicon-on-insulator process. The analysis finds that the Pelliconi charge pump topology is optimal for generating very high bias voltages for micro electro-mechanical system microphones from a low supply voltage when the power consumption and area are limited by the application.

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Published

2021-04-29

How to Cite

Toft, J. K., & Jorgensen, I. H. H. (2021). Analysis of Charge Pump Topologies for High Voltage Mobile Microphone Applications. Elektronika Ir Elektrotechnika, 27(2), 31-39. https://doi.org/10.5755/j02.eie.28827

Issue

Section

ELECTRONICS