2 research outputs found
A Survey about Acquisition System Design for Myoelectric Prosthesis
According to the World Health Organization (WHO), 30 million people are in
need of prosthetic and orthotic devices. Some people are born with this limb
loss, while others lose limbs due to diseases such as Cancer, diabetes, and
work accidents. Additionally, limb amputation is among the most severe and
heavily reported injuries among veterans during war. The medical applications
of integrated circuit technology have recently made significant advances, thus
improving human quality of life. Moreover, the use of microelectronics
integration dominates a lot of medical applications, especially portable and
wearable battery-operated devices. Thus, the objective of this report is to
provide the reader with the basic understanding of integrated solutions for
controlling prosthetic limbs
A 25 mV-startup cold start system with on-chip magnetics for thermal energy harvesting
Thermal energy harvesting systems use boost converters for high-efficiency low voltage operation, but lack the ability for low voltage startup without off-chip transformers. We present a cold start system that uses integrated magnetics instead of external transformers in a Meissner Oscillator to start up from ultra low voltages, with a switched capacitor DC-DC circuit for additional voltage gain. The oscillator analysis with on-chip magnetics allows device co-optimization for low voltage operation, despite 1000x lower inductance values than off-chip transformers. Co-optimized on-chip transformer and depletion-mode NMOS start up from 25 mV driven directly by a sourcemeter, or 50 mV with a 4.7 Ω series resistance, for the lowest integrated electrical startup. The co-packaged system provides proof of concept for integration with boost converter circuits on a single die to have a fully-integrated low voltage startup solution for thermal energy harvesting applications, without using off-chip transformers