Autonomous synchronous rectifier for heart pump applications

Author

Wang, Bingdong ; Hu, Aiguo Patrick ; Budgett, David

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland, New Zealand

fYear

2013

fDate

25-28 Feb. 2013

Firstpage

481

Lastpage

486

Abstract

In order to reduce the power loss and associated temperature rise in the implanted side of the transcutaneous energy transfer system, the passive Schottky current doubler rectifier is replaced with an autonomous synchronous rectifier. Two options of driving the synchronous rectifier are proposed, passive autonomous operation and active gate drive using a buffer circuit. The synchronous rectifiers are found to have about 1.3% higher end-to-end efficiency compared to the Schottky only current doubler for the rated heart pump operational power of 10W.

Keywords

buffer circuits; cardiology; driver circuits; losses; prosthetic power supplies; rectifiers; active gate drive; autonomous synchronous rectifier; buffer circuit; heart pump application; passive Schottky current doubler rectifier; passive autonomous operation; power 10 W; power loss reduction; transcutaneous energy transfer system; Coils; Heart; Integrated circuit modeling; Logic gates; MOSFET; Rectifiers; Schottky diodes; Transcutaneous energy transfer; current doubler; push-pull; synchronous rectifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology (ICIT), 2013 IEEE International Conference on

Conference_Location

Cape Town

Print_ISBN

978-1-4673-4567-5

Electronic_ISBN

978-1-4673-4568-2

Type

conf

DOI

10.1109/ICIT.2013.6505719

Filename

6505719