An Ultrasonic Energy Harvesting IC Providing Adjustable Bias Voltage for Pre-Charged CMUT
An Ultrasonic Energy Harvesting IC Providing Adjustable Bias Voltage for Pre-Charged CMUT
复制标题
一种为预充电 CMUT 提供可调偏置电压的超声波能量收集 IC
DOI:
10.1109/tbcas.2022.3178581
复制
发表时间:
2022
影响因子:
5.1
通讯作者:
Jia, Yaoyao
中科院分区:
文献类型:
--
作者:
Zhao, Linran;Annayev, Muhammetgeldi;Oralkan, Omer;Jia, Yaoyao
Ultrasonic wireless power transmission (WPT) using pre-charged capacitive micromachined ultrasonic transducers (CMUT) is drawing great attention due to the easy integration of CMUT with CMOS techniques. Here, we present an integrated circuit (IC) that interfaces with a pre-charged CMUT device for ultrasonic energy harvesting. We implemented an adaptive high voltage charge pump (HVCP) in the proposed IC, which features low power, overvoltage stress (OVS) robustness, and a wide output range. The ultrasonic energy harvesting IC is fabricated in the 180 nm HV BCD process and occupies a 2 × 2.5 mm2silicon area. The adaptive HVCP offers a 2× – 12× voltage conversion ratio (VCR), thereby providing a wide bias voltage range of 4 V–44 V for the pre-charged CMUT. Moreover, a VCR tunning finite state machine (FSM) implemented in the proposed IC can dynamically adjust the VCR to stabilize the HVCP output (i.e., the pre-charged CMUT bias voltage) to a target voltage in a closed-loop manner. Such a closed-loop control mechanism improves the tolerance of the proposed IC to the received power variation caused by misalignments, amount of transmitted power change, and/or load variation. Besides, the proposed ultrasonic energy harvesting IC has an average power consumption of 35 μW–554 μW corresponding to the HVCP output from 4 V–44 V. The CMUT device with a local surface acoustic intensity of 3.78 mW/mm2, which is well below the FDA limit for power flux (7.2 mW/mm2), can deliver sufficient power to the IC.
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DOI:
10.1109/isscc19947.2020.9062946
发表时间:
2020
期刊:
2020 IEEE International Solid- State Circuits Conference - (ISSCC)
影响因子:
--
作者:
S. Sonmezoglu;M. Maharbiz
通讯作者:
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影响因子:
2.9
作者:
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通讯作者:
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DOI:
10.1109/tbcas.2017.2775638
发表时间:
2017-12-01
影响因子:
5.1
作者:
Yeon, Pyungwoo;Mirbozorgi, S. Abdollah;Ghovanloo, Maysam
通讯作者:
Ghovanloo, Maysam
DOI:
10.1109/tbcas.2022.3140591
发表时间:
2022-03
影响因子:
5.1
作者:
通讯作者:
--
DOI:
10.1109/tbcas.2021.3105064
发表时间:
2021-08-01
影响因子:
5.1
作者:
Seok, Chunkyun;Adelegan, Oluwafemi Joel;Oralkan, Omer
通讯作者:
Oralkan, Omer