simulation of complex hardware circuits is the basis for many EDA tasks and is commonly used at various phases of the design flow. State-of-the-art simulation tools are based upon discrete event simulation algorithms ...
详细信息
ISBN:
(纸本)9781509063895
simulation of complex hardware circuits is the basis for many EDA tasks and is commonly used at various phases of the design flow. State-of-the-art simulation tools are based upon discrete event simulation algorithms and are highly optimized and mature. Symbolic simulation may also be implemented using a discrete event approach, or other approaches based on extracted functional models. The common foundation behind modern simulation tools is that of a switching or Boolean algebraic model that may be augmented with timing information. Recently, an alternative foundational model for conventional digital electronic circuits has been proposed, based upon linear algebra rather than Boolean switching algebra where the circuits are modeled as transfer functions in the form of linear transformation matrices. We demonstrate that this model can be effectively used as the basis for a simulation methodology. Our approach is motivated by the need to develop a truly unified EDA tool for mixed signal circuit design. Currently, industrial tools such as SPECTRE use two different internal engines;a SPICE-like engine and a Verilog-like engine. Our method will allow us to represent mixed signal circuit elements as transfer functions. Spatial complexity is significantly reduced through the use of binary decision diagrams (BDD) to represent the transfer functions. A prototype implementation is used to generate experimental results and to illustrate the viability of the linear algebraic model as a basis for EDA applications.
simulation of complex hardware circuits is the basis for many EDA tasks and is commonly used at various phases of the design flow. State-of-the-art simulation tools are based upon discrete event simulation algorithms ...
详细信息
ISBN:
(纸本)9781509063901
simulation of complex hardware circuits is the basis for many EDA tasks and is commonly used at various phases of the design flow. State-of-the-art simulation tools are based upon discrete event simulation algorithms and are highly optimized and mature. Symbolic simulation may also be implemented using a discrete event approach, or other approaches based on extracted functional models. The common foundation behind modern simulation tools is that of a switching or Boolean algebraic model that may be augmented with timing information. Recently, an alternative foundational model for conventional digital electronic circuits has been proposed, based upon linear algebra rather than Boolean switching algebra where the circuits are modeled as transfer functions in the form of linear transformation matrices. We demonstrate that this model can be effectively used as the basis for a simulation methodology. Our approach is motivated by the need to develop a truly unified EDA tool for mixed signal circuit design. Currently, industrial tools such as SPECTRE use two different internal engines;a SPICE-like engine and a Verilog-like engine. Our method will allow us to represent mixed signal circuit elements as transfer functions. Spatial complexity is significantly reduced through the use of binary decision diagrams (BDD) to represent the transfer functions. A prototype implementation is used to generate experimental results and to illustrate the viability of the linear algebraic model as a basis for EDA applications.
This paper discusses the design of a multichip Gallium-Nitride (GaN) power module for high frequency power conversion. The module is designed with HRL 600 V GalliumNitride (GaN) enhancement mode HEMT device. To exploi...
详细信息
ISBN:
(纸本)9781479923250
This paper discusses the design of a multichip Gallium-Nitride (GaN) power module for high frequency power conversion. The module is designed with HRL 600 V GalliumNitride (GaN) enhancement mode HEMT device. To exploit the capability of fast switching with low loss from high voltage GaN devices, different layout structures have been analyzed to reduce power loop parasitic inductance and improve switching performance. The approach investigated in this paper is based on a multi-chip module where small current rated dies are placed in parallel to achieve higher current handling capability. Moreover, a transmission-line type gate structure has been proposed to minimize the gate loop inductance and reduce the gate voltage ringing. Finite-Element-Analysis (FEA) and switching circuit simulation show that the multi-layer power loop design can effectively reduce the gate loop inductance and voltage overshoot on the devices. This multi-layer design also improves current sharing of the multi-chip module during switching operation. The transmission-line gate design is also proved in both simulation and experiment to be effective for reducing the gate loop inductance as well as gate loop ringing.
The ultrasonic transducer excitation circuits have been investigated The system structure is presented where excitation circuit is planned to be used The possible excitation solutions are presented and discussed. The ...
详细信息
ISBN:
(纸本)9789537138127
The ultrasonic transducer excitation circuits have been investigated The system structure is presented where excitation circuit is planned to be used The possible excitation solutions are presented and discussed. The result of impedance measurement of ultrasonic transducer has been used to derive the Butterworth-Van Dyke electrical model. Then this model was used for PSpice modeling of candidate topologies. The chosen circuit was simulated and experimentally investigated. In this article a structure Of ultrasound generator is analyzed.
暂无评论