ltspice电路仿真使用使用说明书与功能介绍.doc

LTspice IV Getting Started Guide Copyright ? 2011 Linear Technology. All rights reserved. 2 Benefits of Using LTspice IV Outperforms pay-for options ? Stable SPICE circuit simulation with ? Unlimited number of nodes ? Schematic/symbol editor ? Waveform viewer LTspice is also a great schematic capture ? Library of passive devices ? Fast simulation of switching mode power supplies (SMPS) ? Steady state detection ? Turn on transient ? Over 1100 macromodels of Linear Technology products ? 500+ SMPS ? Step response ? Efficiency / power computations ? Advanced analysis and simulation options ? Not covered in this presentation ? 2011 Linear Technology 3 How Do You Get LTspice IV ? Go to /LTspice ? Left click on Download LTspice IV ? Register for a new MyLinear account to receive updates if you have not done so already ? 2011 Linear Technology Getting Started Copyright ? 2011 Linear Technology. All rights reserved. 5 Getting Started using LTspice IV ? Use one of the 100s of demo circuits available on ? Reviewed by Linear Technology’s Factory Applications Group ? Use a pre-drafted test fixture (JIG) ? Provides a good starting point ? Use the schematic editor to create your own design ? LTspice contains macromodels for most LTC power devices ? 2011 Linear Technology 6 Demo Circuits on ? Go to ? Enter root part number in the search box (e.g. 3411) ? Select Simulate Ta b on the left side ? Follow the instructions provided If you do not find a demo circuit of interest, use a pre-drafted test fixture – covered next Download LTspice Download Demo Circuit Complete list of demo circuits available at /democircuits ? 2011 Linear Technology 7 Demo Circuit 9 Designed and Reviewed by Factory Apps Group To run a demo circuit jump to the Run and Probe a Circuit in LTspice section a demo circuit? ? It remains the customers responsibility to verify proper and reliable operation in the actual application ? Printed circuit board layout may significantly affect circuit performance or reliab