12v Power transistor

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zettaman
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Posted by zettaman: Wed. Mar 3, 2010 - 03:16 PM
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Hello,
i want to try my PWM signals on 12 volts.

What transistor are you using to control 12v,10-15 A systems with the output of an avr at 5v.
Thanks

computer : GNU Linux / e6750
ship : Attiny 2313 / ATmega8
compiler : avr-gcc 1:4.3.2-1

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Learning and Information, General Electronics
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alwelch
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Posted by alwelch: Wed. Mar 3, 2010 - 08:17 PM
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This may be of interest. It will handle 20 amps.

http://www.irf.com/product-info/datasheets/data/auips7141.pdf

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ignoramus
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Posted by ignoramus: Wed. Mar 3, 2010 - 10:36 PM
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Alwelch has pointed you in approximately right direction.

The part number he has sugested is not quite general purpose. IRF like ST and a number of other POWERMOSFET manufacturers have a range of devices.

Look for the so called "digital" variants which have a gate source characteristic compatible with 5 volt digital signal levels.

Namely the devices will be switched at 5 volt gate to source signal.

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Bingo600
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Posted by Bingo600: Thu. Mar 4, 2010 - 12:09 PM
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Aren't IR's Logic level Fets called IRLxxx

/Bingo

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alwelch
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Posted by alwelch: Thu. Mar 4, 2010 - 12:54 PM
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According to the data sheet for the part I posted you could run in on 5V VCC if you enable the pull up in the AVR

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zettaman
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Posted by zettaman: Thu. Mar 4, 2010 - 02:01 PM
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Thnaks for reply

i'm studying the BUK555 and the BUK100
Do you know them?

But i'm newbee about MOSFET....

computer : GNU Linux / e6750
ship : Attiny 2313 / ATmega8
compiler : avr-gcc 1:4.3.2-1

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zettaman
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Posted by zettaman: Thu. Mar 4, 2010 - 04:25 PM
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I am also looking the irfb4620pbf
& irf z44n that i found cool and powerfull...

How can i recognize a mos wiwh i can control with my atmel's output?
edit : ok bingo ifrl!!

Thanks

computer : GNU Linux / e6750
ship : Attiny 2313 / ATmega8
compiler : avr-gcc 1:4.3.2-1

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zettaman
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Posted by zettaman: Sat. Mar 6, 2010 - 04:33 PM
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YO
I order irl z44n,
I'll say you what i think about it..;

computer : GNU Linux / e6750
ship : Attiny 2313 / ATmega8
compiler : avr-gcc 1:4.3.2-1

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zettaman
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Posted by zettaman: Sun. Apr 18, 2010 - 08:32 PM
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OK it work well
just with "pulldown" resistor.

computer : GNU Linux / e6750
ship : Attiny 2313 / ATmega8
compiler : avr-gcc 1:4.3.2-1

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