Analysis of Charge Pump Topologies for High Voltage Mobile Microphone Applications

Elektronika ir Elektrotechnika

Ivan H. H. Jorgensen¹  Jakob K. Toft¹ 

[1] Institute of Electrical Engineering, Technical University of Denmark, Denmark;

关键词: charge pumps;    high voltage techniques;    microelectromechanical systems;    microphones;    silicon-on-insulator;   

DOI  :  10.5755/j02.eie.28827

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown