In the future I will use the term "fully turned on" to avoid any confusion.![]()
Some people use the term, "hard on," which has fewer words, but creates certain complications for search engines.
John
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In the future I will use the term "fully turned on" to avoid any confusion.![]()
Hi to all,
After doing some MOSFET research online I realise I don't fully understand how they are turned on. Since all the FETs I have used have always been switching lowish voltages (the most was 30v) I have never come up against what they actually need to saturate with the high voltage ones.
The ones I plan on using are STP9NK60Z N-CHANNEL 600V - 0.85r - 7A and will be switching about 270v dc for a DC universal motor.
I was wondering if I can switch it with the output from a 555 timer for PWM or even from a PIC micro?
Nowhere in the specs does it state the actual voltage or current needed to switch it, and up to now I didn't know it was a concern.
Any help appreciated
Thanks Al
What is the point in having gates in series? To get high current drive, you need gates in parallel. Furthermore, 6 unbuffered inverters in parallel will not be sufficient to drive a power MOSFET.This is a circuit I have used to drive power FET gates. It takes a 0-5v squarewave and boosts it to 0-10v. A cheap alternative if you cannot afford logic FETs.
This is a circuit I have used to drive power FET gates. It takes a 0-5v squarewave and boosts it to 0-10v. A cheap alternative if you cannot afford logic FETs.
What is the point in having gates in series? To get high current drive, you need gates in parallel. Furthermore, 6 unbuffered inverters in parallel will not be sufficient to drive a power MOSFET.
Am I missing something?
What is the point in having gates in series? To get high current drive, you need gates in parallel. Furthermore, 6 unbuffered inverters in parallel will not be sufficient to drive a power MOSFET.
Am I missing something?