Battery Management Technique to Reduce Standby Energy Consumption in Ultra-Low Power IoT and Sensory Applications
| Autor: | Mohsen Radfar, Hoang Le Viet, Aniruddha Desai, Amir Nakhlestani |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Battery (electricity)
business.industry Computer science 020208 electrical & electronic engineering Overhead (engineering) Electrical engineering 02 engineering and technology Energy consumption Converters Chip 0202 electrical engineering electronic engineering information engineering Radio-frequency identification Electrical and Electronic Engineering Standby power business Voltage |
| Zdroj: | IEEE Transactions on Circuits and Systems I: Regular Papers. 67:336-345 |
| ISSN: | 1558-0806 1549-8328 |
| Popis: | In this paper, we present a battery management technique that significantly increases the battery lifetime of event-based devices that are predominantly in standby mode without requiring off or on chip large power switches. The proposed technique uses a novel battery management technique to remove Wake-Up Receiver (WUR) Low Drop-Out (LDO) unit, while causing minimal change to the system’s power supply configuration. This technique manages the system so that it can wake up to a normal battery configuration while sleeping in a different battery set-up. This, as a result, drops standby power consumption significantly, making the proposed technique suitable for IoT sensors and, in general, event-based devices. Battery management comprises of voltage level detector, switches for changing battery configuration, and voltage level shifters. The design was applied to an active Radio Frequency Identification (RFID) tag with an embedded WUR and fabricated using TSMC 180nm technology. Measurements on the test chip showed that the proposed architecture and design leads to 80% standby energy saving, prolonging overall (active plus standby) battery’s lifetime by 2.5 times while having negligible area overhead. The advantages and disadvantages of the proposed technique are also presented and discussed. |
| Databáze: | OpenAIRE |
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