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| Circuit for MosFets in parallel for extra current capacity.(Solved) |
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| Jim-0000:
I wish to find a design for a MosFet circuit to have around 100 amp capacity. I will be drawing 60 amps, so some headroom will be good. I know there are big MosFets that will do this job and more, but they are expensive. I understand that it is possible to design a circuit for two or more smaller, much cheaper one. Just found this one for example: https://www.sparkfun.com/products/10213 FQP30N06L for 95 cents. Three of these (if they prove to be suitable, if not, something similar) will be ok for my pensioners budget. I understand that provisions must be made to ensure all gates are turned on at the same time, or very nearly so, to avoid one semi-conductor coping with the turn on spike. Also, heat dissipation factors have to evaluated and most likely, some sort of heat sink provided. I already have some of these in stock: FQP30N06L Data sheet: http://www.mouser.com/ds/2/149/FQP30N06L-112819.pdf This is my first post here. I hope some reader can assist or direct me to another source etc. Jim. |
| T3sl4co1l:
Okay but for what? Tim |
| MarkF:
Welcome Consider something in a TO-247 package for better heat dissipation. Like an IRFP064N @ $2.59US https://www.mouser.com/ProductDetail/Infineon-IR/IRFP064NPBF?qs=sGAEpiMZZMshyDBzk1%2fWi5%252bqVgN3%252bWS8G8awMUgotiM%3d The TO-247 package is much bigger. Need more details. |
| Jim-0000:
Ok Tim and Mark. Thanks for the replies. Tim: "For what?" It is for a 4 cell LiPo powered ESC (Electronic Speed Controller) in a model aircraft - glider. Mark, I will look at the suggested alternative MosFet now, thanks. Is it possible to make multiple quotes on these forums? Jim. |
| Jim-0000:
Mark, I found the Mouser link formidable to navigate. However, I did find this data sheet: https://www.st.com/resource/en/datasheet/stp160n75f However, there seems to be some confusion about the max current capabilities. Also, I am confused about the nomenclature (identification of these devices). Even on the above data sheet, it is not clear which ones are being rated. TO-247 or STB160N75N3? Screenshot attached. Jim. Edit: I did find my way into the Mouser site. My search lead me to the data sheet on SUG90090E. For all I know, it is an equivalent, or similar to the device number you suggested above Mark. I surely does seem to be a candidate for my application. Price is ok too. |
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