Title :
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
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;
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
DOI :
10.1109/ICIT.2013.6505719
