• Journal of information and communication convergence engineering
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• v.9 no.1
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• pp.74-77
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• 2011

PSPICE modeling of a commercial LED driver IC (TOP245P) and PC817A optocoupler is proposed for the switch-mode power supply (SMPS) (applicable to LED driver) design and simulation. An analog behavioral model of the TOP245P IC including the shunt regulator, under-voltage(UV) detection, over-voltage(OV) shut-down and SR flip-flop is developed by using PSPICE. The empirical equation of PC817A current transfer ratio (CTR) is fitted from the datasheet of PC817A. Two types of SMPSs are simulated with the averaged-model and switching-model. The simulation results by the proposed PSPICE models are in good agreement with those in the data sheet and an experimental data.

• Journal of Advanced Marine Engineering and Technology
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• v.23 no.2
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• pp.150-158
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• 1999

The process of designing protective circuits against damage by transient overvoltages requires much work and expensive equipment. However computer simulation using PSpice can overcome these problems. In this paper a gas tube and a ZnO varistor Pspice-model considering the steepness of the wave-front were presented. The effects of various waveforms on the transient behaviors and firing volt-ages of a gas tube were modeled by controlled voltage source E controlled current source G and TABLE function of PSpice. And the nonlinear characteristics of a ZnO varistor were modeled by controlled voltage source E and H. To estimate the characteristics of the models proposed various waveforms specified in IEC Std. 1000310-4-5 were used in the simulation and the actual tests. The simulation results were compared with test results and showed good agreement.

• Proceedings of the KIEE Conference
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• 2000.07b
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• pp.1209-1211
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• 2000

This paper presents a PSPICE circuit model for the simulation of both static and dynamic characteristics of fluorescent lamps. The model can by utilized for an electric ballast simulation with continuous dimming and transient mode simulation such as step dimming Characteristics of a Rosen-type piezoelectric transformer were analyzed by combining an equivalent circuit with piezoelectric equations and the relation between the characteristics and the dimension of the PT was studied.

• Proceedings of the KIEE Conference
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• 1998.07e
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• pp.1675-1677
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• 1998

It is currently increasing to use surge protection devices in the protection of various electronic circuits from the transient overvoltages such as lightning strikes and switching surges. For this reason, the simulation methods, which can easily predict the protection performance of the devices, are strongly required in order to design the adequate surge protection circuits in lightning surge cut-off performance and economic aspects. This paper deals with ZnO varistor modeling method for designing a surge protection circuit and suggests the Pspice simulation model which takes the characteristic of varying clamping voltage into consideration during the time-to-crest, in range of $8{\sim}30{\mu}s$, of surge current applied to a ZnO varistor. The ZnO varistor Pspice simulation data introduced in this paper has produced almost same values as the measured results experimentally.

• Proceedings of the KIEE Conference
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• 1998.07f
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• pp.1876-1878
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• 1998

For an analysis and simulation of the conducted EMI of switching converters, an accurate simulation model for MOSFET is needed. This paper presents a new modeling approach, which incorporates DC output characteristics and AC dynamics especially the parasitic capacitances. It uses Pspice ABM(Analog Behavioral Model) and the MOSFET parameters can be obtained from the Data sheet in the frequency range of interest for EMI analysis. The model verified with an experimental setup and the EMI for a test converter is analyzed with respect to the MOSFET switching waveforms.

• Proceedings of the KIPE Conference
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• 1997.07a
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• pp.148-151
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• 1997

Pspice is not offered a library of mechanical factor like DC Motor, Induction Motor which is needed in Power Electronics field. Therefore, Induction Motor was made library by Equibalent circuit in this study. This model is applied in Voltage-Type inverter and is investigated its characteristics. IGBT is tested by two methods of Macro and Micro Modeling as semiconductor. PWM signal is used of pulse signal. Voltage and current, speed was simulated for assurance of model.

• Proceedings of the KIPE Conference
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• 2001.07a
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• pp.630-633
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• 2001

This paper presents a PSPICE circuit model for the simulation of both static and dynamic characteristics of fluorescent lamps. The model can by utilized for an electric ballast simulation with continuous dimming and transient mode simulation such as step dimming Characteristics of a Rosen-type piezoelectric transformer were analyzed by combining an equivalent circuit with piezoelectric equations and the relation between the characteristics and the dimension of the PT was studied.

• Proceedings of the KIEE Conference
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• 1995.07a
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• pp.382-384
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• 1995

The advancement of power semiconductor devices has given great attribution to the performance and reliability or power conversion systems. But contemporary power devices have room for improvement. So much interest and endeavor are being applied to develop an improved power devices. The MOS-Controlled Thyristor(MCT)is a recently developed power device which combines four layers thyristor structure and MOS-gate. Owing to advantages compared to other devices in many respects, the MCT attracts much notice recently. Nowadays, in designing and manufacturing power conversion systems, the importance of circuit simulation for reducing cost and time is incensed. And to excute the simulation that resemble the real system as much as possible, to develop a model of power device that provides properly static and dynamic characteristics is important. So, this paper presents a PSPICE model of the MCT considering dynamic characteristics.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1991.10a
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• pp.210-214
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• 1991

We briefly compared GaAs MESFET model and s셔요 on the method of parameter extraction for PSPICE simulation. The parameter determined from above method were substituded into a commercial version of PSPICE which supports the hyperbolic tangentent model. The result of simulation is reasonably good at the lower VGS and is significantly fitted overall by optimization.

• The Transactions of the Korean Institute of Power Electronics
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• v.8 no.2
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• pp.180-191
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• 2003

In this paper, the modelings of PSPICE of the piezoelectric transformer and CCFL drive circuit using an electrical equivalent circuit is proposed. In the CCFL drive circuit modeling the model parameters of the CCFL were derived using the method of least squares because push-pull inverter and loads such as CCFL were also modeled using PSPICE. It is considered that the simulation techniques can be used in the piezoelectric devices such as piezoelectric transformer.