EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
Driving a single mosfet
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: Driving a single mosfet (Read 2107 times)
0 Members and 1 Guest are viewing this topic.
auto_mitch
Newbie
Posts: 1
Driving a single mosfet
«
on:
March 30, 2013, 05:07:22 pm »
Hi!
I am trying to build a high power speed controller for a DC motor.
I want to control the motor only to one direction. I decide to use a single mosfet with a mosfet driver as the following schematic shows.
Mosfet:
http://www.irf.com/product-info/datasheets/data/auirl1404z.pdf
Driver:
http://ww1.microchip.com/downloads/en/devicedoc/21422d.pdf
D1:
http://www.sirectifier.com/datasheet/High%20Tjm%20LOW%20IRRM%20Schottky%20Barrier%20Diodes/MBR3050CT%20thru%203060CT.pdf
The frequency of the pwm is 23,53Khz. The problem that i face is that the mosfet is getting very hot when i try to change the duty cycle of the pwm. I have tried lower freq like 5Khz but the mosfet is getting hot again.
I dont know if there is something wrong with my driver. Any ideas?
«
Last Edit: March 30, 2013, 05:19:48 pm by auto_mitch
»
Logged
NiHaoMike
Super Contributor
Posts: 9016
Country:
"Don't turn it on - Take it apart!"
Re: Driving a single mosfet
«
Reply #1 on:
March 30, 2013, 05:10:09 pm »
You need another fast recovery diode across the load.
Logged
Cryptocurrency has taught me to love math and at the same time be baffled by it.
Cryptocurrency lesson 0: Altcoins and Bitcoin are not the same thing.
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
Driving a single mosfet
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee