Electronics > Projects, Designs, and Technical Stuff
Circuit for MosFets in parallel for extra current capacity.(Solved)
(1/10) > >>
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.

Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod