An 85 nW IoT Node-Controlling SoC for MELs Power-Mode Management and Phantom Energy Reduction
This paper presents an ultra-low power (ULP) node-controlling system-on-chip (SoC) used for power-mode management and phantom energy reduction of miscellaneous electric loads (MELs). The SoC is powered from a single 2.5 V voltage supply enabled by the integrated power management unit (PMU) and can control up to 16 MELs due to the on-chip 16-channel correlator and the 32b RISC-V microprocessor. To further reduce the system power consumption, two clock domains have been adopted for the correlator and the processor separately. Fabricated in 65-nm CMOS, the measured minimum power consumption of the proposed SoC is only 85 nW at 0.45 V voltage supply and 1 kHz clock frequency. The measured maximum operating frequency can go up to 148 kHz with a 0.55 V supply. An application experiment successfully demonstrates that the SoC controls the power modes of MELs from wake-up to cut-off to save the average power and phantom energy.
- Research Organization:
- University of Virginia
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
- DOE Contract Number:
- EE0008225
- OSTI ID:
- 1860364
- Journal Information:
- 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Conference: Published in: 2020 IEEE International Symposium on Circuits and Systems (ISCAS) Date of Conference: 12-14 Oct 2020 Date Added to IEEE Xplore: 28 September 2020 Print ISBN:978-1-7281-3320-1 Print ISSN: 2158-1525 INSPEC Accession Number: 20779647 DOI: 10.1109/ISCAS45731.2020.9180473 Publisher: IEEE Conference Location: Seville, Spain
- Country of Publication:
- United States
- Language:
- English
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