Analysis of temperature dependent power supply voltage drop in graphene nanoribbon and Cu based power interconnects

The reference is an important part of the micro-gyroscope system. The precision and stability of the reference directly affect the precision of the micro-gyroscope. Unlike the traditional bandgap reference circuit, a circuit using a temperature-dependent resistor ratio generated by a highly-resistive poly resistor and a diffusion resistor in CMOS technology is proposed in this paper. The complexity of the circuit is greatly reduced. Implemented with the standard 0.5μm CMOS technology and 9V power supply voltage, in the range of -40~120°C, the temperature coefficient of the proposed bandgap voltage reference can achieve to about 1.6 ppm/°C. The PSRR of the circuit is -107dB.

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Investigating the Applicability of Graphene Nanoribbon as Signal and Power Interconnects for Nanometer Designs

Journal of Circuits System and Computers ◽

10.1142/s0218126616500018 ◽

2015 ◽

Vol 25 (02) ◽

pp. 1650001 ◽

Cited By ~ 8

Author(s):

Debaprasad Das ◽

Hafizur Rahaman

Keyword(s):

Supply Voltage ◽

Voltage Drop ◽

Graphene Nanoribbon ◽

Switching Noise ◽

Crosstalk Noise ◽

Power Supply Voltage ◽

Graphene Layers ◽

Ir Drop ◽

Simultaneous Switching ◽

Better Than

In this work, we have investigated the applicability of graphene nanoribbon (GNR) as the interconnects for 16-nm ITRS technology node. GNR is proposed as the possible alternative to the traditional copper (Cu)-based interconnect systems in nanometer regime. In this paper, we have performed important studies on GNR for its applicability as power and signal interconnects. For the application of power interconnects, we have investigated the power supply voltage drop (IR drop) and simultaneous switching noise (SSN) in graphene-based interconnect system. We have performed crosstalk noise and overshoot/undershoot analyses for the application of signal interconnects. The results are compared with that of the traditional Cu-based interconnects. The results show that GNR is better than Cu as far as IR drop, SSN, gate oxide reliability and hot carrier reliability are concerned. Our investigation reveals that GNR can be better than the Cu interconnects from all aspects with a multilayer GNR structure. The present graphene-based interconnect technology needs to be advanced, so that the metal–graphene contact resistance is minimized and multilayer GNR structure with large number of graphene layers is supported.

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Analysis of the influence of zero potential live operation on protection

E3S Web of Conferences ◽

10.1051/e3sconf/202015203004 ◽

2020 ◽

Vol 152 ◽

pp. 03004

Author(s):

Qi Yang ◽

Zhenyu Wang ◽

Liang Zhu ◽

Li Xu ◽

Chaohui Zhen

Keyword(s):

Power Supply ◽

Impact Analysis ◽

Supply Voltage ◽

Voltage Drop ◽

Distribution Network ◽

Neutral Point ◽

Power Supply Voltage ◽

Current Curve ◽

Zero Sequence ◽

Zero Potential

In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the analysis of singlephase buck symmetrical operation characteristics, a new method of zero-potential live working of distribution network based on injection current is proposed. By injecting current into the neutral point, the zero-sequence voltage is regulated so that the neutral point voltage is equal to the value of the operating phase line voltage drop minus the operating phase power supply voltage, ensuring that the operating point voltage is zero. Based on the principle of current fast-break protection and time-limited overcurrent protection, it is analyzed that the zero-potential uninterruptible operation method of the distribution network will not affect the distribution network protection. Finally, the system model is established based on the MATLAB. The simulation verifies the feasibility of the method by the operating phase voltage curve and the correctness of the protection impact analysis by comparing the non-working phase current curve with the protection setting.

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