R Classroom | DC-DC Converter Thermal Simulation Circuit
Key takeaways from this article
・ Thermal simulation is performed using the Solution Circuit of DC-DC converter BD9G500EFJ-LA with thermal analysis function.
・ Simulation circuits include electronic circuits and thermal simulation circuits.
・ The temperature is calculated by inputting the losses calculated by the electronic simulation circuit into the thermal simulation model.
From this article, we will introduce how to use the DC-DC converter thermal simulation circuit using ROHM Solution Simulator and the solution circuit of the BD9G500EFJ-LA DC-DC converter with thermal analysis function. I hope you will actually start the ROHM Solution Simulator and follow along while reading this article.
First, please know the following:
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You can view the introduction of ROHM Solution Simulator through the ROHM Solution Simulator page below.
https://www.rohm.com.cn/solution-simulator
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You can learn the basic usage of ROHM Solution Simulator through the Tech Web article in the link below.
https://techclass.rohm.com.cn/knowledge/simulation/rss-sim/02-rss-sim/9802
▶ ROHM Solution Simulator and Solution Circuit are free to use, but you need to register and log in to MyROHM.
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The Solution Circuit of the DC-DC converter BD9G500EFJ-LA used in the introduction can be started directly by clicking the link below.
https://www.rohm.com.cn/solution-simulator/thermal_simulation-bd9g500efj-la
Alternatively, please click on the ROHM Solution Simulator page > "Simulation Circuit" > [ICs Solution Circuit] > Switching Regulators > Industrial > BD9G500EFJ-LA Simulation project Thermal's "GO".
Alternatively, you can
access it through "Models and Tools" on the
BD9G500EFJ-LA
product page.
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This article is based on the ROHM Solution Simulator User Guide found at the link below.
"
"DC-DC Converter BD9G500EFJ-LA Thermal Simulation"
" (Click to download the PDF document)
Simulation Circuit Used for Thermal Simulation of DC-DC Converters
When the Solution Circuit of the above DC-DC converter BD9G500EFJ-LA is started, the circuit shown in Figure 1 will be opened. The part enclosed by the green line represents the thermal simulation circuit, and the remaining part represents the electronic simulation circuit.
Figure 1. Simulation circuit of DC-DC converter BD9G500EFJ-LA
This electronic circuit is an application circuit using a BD9G500EFJ-LA single-channel step-down DC-DC converter with a maximum output current of 5A.
The thermal simulation circuit will input the loss of BD9G500EFJ-LA (hereinafter referred to as "IC") and the loss of Schottky barrier diode (hereinafter referred to as "SBD") RB088BM100TL calculated by the electronic simulation circuit into the thermal simulation model, and calculate the IC and SBD temperature.
Technical data download
We have prepared downloadable materials such as lecture notes for seminars held by ROHM and DC-DC converter selection guides.
View a list of downloadable materials
List of articles related to "Thermal simulation circuit of DC-DC converter"
▪What is thermal simulation of DC-DC converter
▪ Simulation methods
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