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A calculation method based on the partial capacitance is proposed to analyze the voltage-dependence capacitance system of IGBT(Insulated Gate Bipolar Transistor). The capacitance system of IGBT is modeled with semiconductor junction capacitors and MOS(Metal-Oxide-Semiconductor) capacitors, and each capacitance is obtained by solving the junction voltage under the external bias voltages. At last, the...
A novel method based on equivalent circuit is presented to model and analyze the EBG(Electromagnetic Band Gap) structure of power planes. The planar EBG structure is divided into cells and connecting parts, the equivalent circuit is developed by combining the integral equation multi-port networks and the micro-strip transmission lines. The stop bandgap of the EBG structure is obtained by the circuit...
A method based on equivalent circuit is presented to modeling and analysis the EBG structure of power planes. The planar EBG structure is divided into cells and connecting parts, the equivalent circuit is created by combining the multiport networks on contour integral equation and the microstrip lines. The stop bandgap of the EBG structure is obtained by circuit simulation, furthermore, it is discussed...
A method is presented to get the distributed characteristic of impedance and the locations of decoupling capacitors on power-ground(PG) planes for minimizing the impedance design. Multi-port networks method based on the integral equation is proposed to model the PG pair with voltage regulator module(VRM) and decoupling capacitors, the distributed characteristic of impedance is analyzed by ports reduced...
In this paper, the via-via inductance between power-ground plane in printed circuit board is extracted analytically by using the scattering matrix method(SMM). A gap voltage source is used to excited the higher order modes between parallel plates, by solving the linear scattering matrix equation, the scattered wave coefficient is obtained, furthermore, the admittance parameter between two vias is...
The radiation from a power-ground planes structure in high-speed printed circuit boards due to high switching noise current is investigated in this paper. A 2D contour integral method is used to characterize the radiation from the power-ground planes. The contour integral method can model an arbitrarily shaped power-ground planes pair more efficient than 3D numerical methods. By combining the noise...
One design method of 32 bits comparator for multi-number systems was proposed. In this method, 64 bits double precision floating point data and 32 bits single precision floating point data based on IEEE754 standard, 32 bits signed fixed point data and 32 bits unsigned fixed point data can be processed by the same comparator. An RTL module was implemented based on the proposed method. This RTL module...
In gapped power-ground planes, there is strong coupling between two sides of narrow slot. So the modeling of the gapped PG planes needs to take into account this coupling. In this paper, a circuit-oriented model is proposed for analyzing the characteristics of PG planes. An integral equation equivalent circuit (IEEC) method is used to model the arbitrary shaped PG pair, and transmission lines method...
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