A feedback controlled coil driver for transcutaneous power transmission

Author

Lee, Edward K F

Author_Institution

Alfred Mann Found., Santa Clarita, CA, USA

fYear

2012

fDate

9-12 Sept. 2012

Firstpage

1

Lastpage

4

Abstract

A fully integrated feedback controlled coil driver for transcutaneous power transmission was proposed to power biomedical implants. For a normal power transmission operation, the voltage across the switch that energizes the coil is sampled and compared with ground, followed by an integration to obtain an optimal on-time for the switch such that the coil current was maximized for a given DC input power. The coil driver also provides ASK modulation on the coil current by changing the size of the switch according to the input data. In the normal power transmission operation, a peak-to-peak coil current of ~730mA was obtained with a power dissipation of 71.6mW at 5V.

Keywords

amplitude shift keying; driver circuits; feedback; inductive power transmission; prosthetic power supplies; switches; ASK modulation; biomedical implants; coil current; fully integrated feedback controlled coil driver; power 71.6 mW; transcutaneous power transmission; voltage 5 V; Amplitude shift keying; Coils; Frequency modulation; Implants; Power transmission; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference (CICC), 2012 IEEE

Conference_Location

San Jose, CA

ISSN

0886-5930

Print_ISBN

978-1-4673-1555-5

Electronic_ISBN

0886-5930

Type

conf

DOI

10.1109/CICC.2012.6330600

Filename

6330600