J. Semicond. > 2016, Volume 37 > Issue 2 > 025004
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SEMICONDUCTOR INTEGRATED CIRCUITS

An ultra-low-voltage rectifier for PE energy harvesting applications

Jingmin Wang, Zheng Yang, Zhangming Zhu and Yintang Yang

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 Corresponding author: Zhu Zhangming, Email: zmyh@263.net

DOI: 10.1088/1674-4926/37/2/025004

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Abstract: An ultra low voltage rectifier with high power conversion efficiency (PCE) for PE energy harvesting applications is presented in this paper. This is achieved by utilizing the DTMOS which the body terminal is connected to the gate terminal in a diode connected transistor. This implementation facilitates the rectifier with dynamic control over the threshold voltage. Moreover, we use input powered to take the place of output powered to reduce the power loss and thereby increasing the power conversion efficiency. Based on standard SMIC 0.18 μm CMOS technology, the simulation results show that the voltage conversion efficiency and the power conversion efficiency can reach up to 90.5% and 95.5% respectively, when the input voltage equals to 0.2 V @ 100 Hz with load resistance 50 kΩ . Input voltages with frequencies in the range of 10 Hz-1 kHz can be rectified.

Key words: PE energy harvesting, DTMOS, input powered, active rectifier



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Fig. 1.  The structure of an active rectifier. (a) Conventional active rectifier. (b) Proposed active rectifier

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Fig. 2.  (a) BTMOS architecture.(b) DTMOS architecture.(c) PMOS threshold voltage variation with body-source voltage in SMIC 0.18 μm CMOS process.

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Fig. 3.  Schematic of the negative voltage converter (NVC) using DTMOS architecture.

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Fig. 4.  Schematic of the active diode. (a) PMOS switch. (b) Input-powered comparator.

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Fig. 5.  The simulation waveforms of the proposed rectifier at VIN =200 mV.

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Fig. 6.  The voltage efficiency of the proposed rectifier at different process corners

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Fig. 7.  (a) The power efficiency versus difference load resistance. (b) The power efficiency versus input voltage.

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Table 1.   Performance summary and comparisons

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    Received: 09 June 2015 Revised: Online: Published: 01 February 2016

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      Article Navigation >  Journal of Semiconductors  > 2016  >  37(2): 025004
      Jingmin Wang, Zheng Yang, Zhangming Zhu, Yintang Yang. An ultra-low-voltage rectifier for PE energy harvesting applications[J]. Journal of Semiconductors, 2016, 37(2): 025004. doi: 10.1088/1674-4926/37/2/025004 ****J M Wang, Z Yang, Z M Zhu, Y T Yang. An ultra-low-voltage rectifier for PE energy harvesting applications[J]. J. Semicond., 2016, 37(2): 025004. doi: 10.1088/1674-4926/37/2/025004.
      Citation:
      Jingmin Wang, Zheng Yang, Zhangming Zhu, Yintang Yang. An ultra-low-voltage rectifier for PE energy harvesting applications[J]. Journal of Semiconductors, 2016, 37(2): 025004. doi: 10.1088/1674-4926/37/2/025004 ****
      J M Wang, Z Yang, Z M Zhu, Y T Yang. An ultra-low-voltage rectifier for PE energy harvesting applications[J]. J. Semicond., 2016, 37(2): 025004. doi: 10.1088/1674-4926/37/2/025004.
      shu

      An ultra-low-voltage rectifier for PE energy harvesting applications

      DOI: 10.1088/1674-4926/37/2/025004
      Funds:

      Project supported by the National Natural Science Foundation of China (Nos. 61234002, 61322405, 61306044, 61376033) and the National High-Tech Program of China (No. 2013AA014103).

      More Information
      • Corresponding author: Zhu Zhangming, Email: zmyh@263.net
      • Received Date: 2015-06-09
      • Accepted Date: 2015-08-02
      • Published Date: 2016-01-25

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