Reading Notes on the Good Book "Operational Amplifier Parameter Analysis and LTspice Application Simulation" 05--LTspice Simulation

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Reading Notes on the Good Book "Operational Amplifier Parameter Analysis and LTspice Application Simulation" 05--LTspice Simulation [Copy link]

The fifth chapter of the book introduces the use of LTspice. I used Tina-TI more often before, because the company that charges for simulation software did not buy it for me, so I had to use the free one. TINA is also one of the many simulation software based on the SPICE algorithm. LTspice simulation software is an excellent circuit simulation software with a beautiful interface and powerful functions. It can help students and professional engineers design simple to complex switching regulators and run circuit simulations. The key is that it is also free! The two software interfaces are shown below. It has simulation, circuit capture and waveform observer, which simplifies the simulation of switching regulators and provides improvement suggestions and models. The improvements we made to Spice make the simulation speed of switching regulators extremely fast, which has been greatly improved on the basis of Spice simulator, making the simulation of most switching power supplies easy and intuitively observing waveforms. In particular, it supports ADI devices. The downloadable content includes Spice and Macro Models for 80% of ADI switching regulators, a variety of operational amplifier models, and resistor, transistor and MOSFET models.

The interface of the LTspice simulation software has a strong Linux style and is indeed designed by engineers.

It is also very easy to use. The figure below is ADI's LT3950 multi-topology LED driver. The probe can be used to display the waveform of each point, especially from the circuit power-on transient to the stable state, which can be displayed intuitively, which is very convenient for everyone to analyze the working process of the circuit. There are detailed operating instructions in the book. The latest version also has Educational and other simulation projects built to help beginners familiarize themselves with the various functions of the simulator. In general, the latest version of LTspice is very practical and very suitable for experimental use!

Wen_Jin

Have you ever encountered a situation where the chip of a company you are using cannot be simulated? For example, some TI chips have encrypted spice models and cannot be used in LTspice?

qwqwqw2088

Wen_Jin published on 2021-5-28 17:22 Have you ever encountered a situation where the chip of a company you use cannot be simulated? For example, some TI chips have encrypted spice models, so they cannot be used in LTspice.

TI chips use Tina-TI, which is also based on the SPICE algorithm and is also targeted at TI devices.

LTspice is for Linear and ADI chips

They are all small and exquisite simulation software, starting block, simulating this quickly, and verifying a small circuit is enough

qi777ji

Wen_Jin posted on 2021-5-28 17:22 Have you ever encountered a situation where the chip of a company you use cannot be simulated? For example, some TI chips have encrypted spice models, so they cannot be used in LTspice&n ...

Yes, I guess it is to better promote the company's products. Just like many software are incompatible with each other, everyone has their own plans, such as unifying the market.