Topic
Power integrity
About: Power integrity is a research topic. Over the lifetime, 983 publications have been published within this topic receiving 6867 citations.
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18 Mar 2019
TL;DR: This paper proposes an improved NBTI-aware DLDO design which uniformly turns on pMOS to avoid bias aging, and shows that with this design, the lifetime of DLDOs can be extended by 20%.
Abstract: Digital low dropout voltage regulators (DLDOs) have been widely applied to emerging edge devices of IoT systems due to the benefit of simply designing, easily integrating to edge devices, and fast responding. Conventional DLDOs insert parallel pMOSs between V in and V out , and use a digital controller to turn on appropriate number of pMOSs to obtain required V out . The turned on pMOSs are suffering from non-negligible Negative-Bias Temperature Instability (NBTI) effect and therefore the power integrity cannot be guaranteed after aging. To mitigate the NBTI effect and to extend the lifetime of DLDOs (as well as the whole circuit), in this paper we propose an improved NBTI-aware DLDO design which uniformly turns on pMOS to avoid bias aging. Experimental results show that with our design, we can achieve 20% DLDO lifetime extension.
1 citations
17 May 2020
TL;DR: Design tips considering power integrity (PI) for the power distribution network (PDN) in an re-distribution layer (RDL) demonstrate that the PI issues of an RDL can be avoided at an early stage of the chip-package co-design.
Abstract: In this paper, the design tips considering power integrity (PI) for the power distribution network (PDN) in an re-distribution layer (RDL) are presented. First, the methodology of chip-RDL co-simulation is introduced. It indicates that decreasing the PDN loop inductance is critical for a robust PDN design in a high-speed transmission channel. Then, the loop inductance based on a simplified PDN model is derived, which reveals several possible ways to reduce the voltage ripple between power/ground terminals. Finally, the PDN design tips are proposed and verified based on the derived results. These design tips demonstrate that the PI issues of an RDL can be avoided at an early stage of the chip-package co-design.
1 citations
01 Dec 2009
TL;DR: In this article, the frequency-dependent cylinder layer (FDCL) is proposed to resolve the open problem of boundary modeling associated with modal expansion methods, and a generalized T matrix model derived by the mode matching technique is created to characterize the coupling effect for vias penetrating more than one layer in a multilayered structure.
Abstract: This paper reported the latest development of the modal decomposition with T-matrix method for accurate and efficient analysis of coupling of multiple vias in finite-sized multilayered parallel-plate structures. A novel boundary modeling method, named the frequency-dependent cylinder layer (FDCL), is proposed to resolve the open problem of boundary modeling associated with modal expansion methods. Moreover, a generalized T matrix model derived by the mode matching technique, is created to characterize the coupling effect for vias penetrating more than one layer in a multilayered structure. Both numerical and experimental verifications are presented to validate the new modeling methods. The above method has been incorporated into the simulation tool developed recently by us.
1 citations
TL;DR: The papers in this special section are focused on one aspect of the current technological wave of nature-inspired computing and algorithms, which provides a rich source of inspiration for designing algorithms and approaches to tackle real-world challenging EMC and Signal & Power Integrity (SI/PI) problems.
Abstract: The papers in this special section are focused on one aspect of the current technological wave. As we all know, nature-inspired (NI) computing and algorithms play an ever increasing role in problem solving by way of optimization, machine intelligence, data mining, and resource management. Nature has evolved over millions of years under a variety of harsh and severe environments and, thus, provides a rich source of inspiration for designing algorithms and approaches to tackle real-world challenging EMC and Signal & Power Integrity (SI/PI) problems.
1 citations
17 May 2016
TL;DR: In this paper, the effects of high frequency switching noise from an automotive cluster coupling into a TFT display module, causing undesirable radiated emissions is presented, demonstrating the importance of good power supply filtering to prevent RF noise from coupling into the TFT displays from automotive instrumentation cluster.
Abstract: With increasing consumer's demand and technological advancement for automotive electronic systems, it is becoming a challenge to ensure good compliance for high speed design (signal and power integrity) and electromagnetic compatibility. In this paper, the effects of high frequency switching noise from an automotive cluster coupling into a TFT display module, causing undesirable radiated emissions is presented. Experimental results, demonstrating the importance of good power supply filtering to prevent RF noise from coupling into the TFT display from an automotive instrumentation cluster is demonstrated. In addition, complex modeling of the entire power distribution network, consisting of PCB and FPC is performed. With the model, the PDN impedance with and without EMC considerations can be simulated and analyzed.
1 citations