Title :
A timing controlled AC-DC converter for biomedical implants
Author_Institution :
Alfred Mann Found., Santa Clarita, CA, USA
Abstract :
An AC-DC converter is designed for supplying light-load digital circuits in a biomedical implant. When the AC input is just above the DC output (VDCo), a boosted switch is turned on and then turned off according to the load current by controlling the switch timing via a feedback loop. A power efficiency of 93.8% is achieved with a 3.5 V peak AC input, VDCo = 2 V, and an output power of 10 mW.
Keywords :
AC-DC power convertors; biomedical electronics; digital circuits; feedback; prosthetics; switching convertors; AC-DC converter; VDCo; biomedical implants; feedback loop; light-load digital circuits; power efficiency; switch timing; timing; AC-DC power converters; Analog circuits; Buck converters; Capacitors; Implants; Rectifiers; Regulators; Switches; Timing; Voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5434021
