Using oscillation voltage to drive dynamic-domino circuits for designing low-power bio-implanted electronics

• The oscillation voltage can be directly applied to low-speed domino circuits.
• The proposed chip allows for a 68% reduction of dynamic power consumption.
• The wireless inductive power can be used for bio-medical care applications.

Power supply is a key constraint for designing bio-implanted electronic devices. Most conventional internal bio-electronic systems are expected to produce power through wirelessly transmitted technology. However, due to the low efficiency of wireless transmission, the technology cannot be validated. Current generic static CMOS circuits require a constant-level voltage (DCVdd) supply – otherwise, the circuits will malfunction. This work demonstrates that the oscillation voltage (OscVdd) can be directly applied to low-speed dynamic-domino circuits. We successfully designed a test chip that uses OscVdd (validated by TSMC 0.18 μm technology). Compared to DCVdd, OscVdd chips allow for a 68% reduction of dynamic power consumption. With the latch functionality enabled, the OscVdd chip results in a further 42% reduction of power consumption. Therefore, wireless inductive power can be broadly used for future bio-electronics internal human body medical care applications, which are designed by using dynamic-domino circuits.

The proposed wireless power-operated bio-circuit system.Figure optionsDownload as PowerPoint slide