IRF520 DATASHEET PDF

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Using MOSFETS with TTL levels (5 Volt and 3.3 Volt)

Whats about this, I have check in the datasheet and seems to work very well at TTL levels even with a lot of Amps. It doesnt look dedicated to a steppermotor though, more to drive a rgular DC motor. The 20 Volt you probably saw in the datasheet, but that is the max voltage on the gate. Why I should use one instead the other? Notify me of new comments via email. I am using this converter: I presume you are aware of the designcriteria of an H-bridge and datazheet chances of shorting your PSU if you dont do the switching correctly.

Thanks in advance, Ruben. Thanks — You are correct. The only conditions are it should have high dstasheet speed so low rds on and high break down voltage. Well, you would need to put an inverter before the circuit i provided, either by a logical gate or with yet another transistor.

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Not an ideal choice, but a good one.

So the currents you are quoting are with a full supply voltage across the FET for a very short time. The datasheet indicates max Vgs 4V but the curve shows that at 5V the mosfet can deliver current way above my requirement. R1 is just there to limit the current through the gat, coming from a microcontroller pin.

I am not sure what voltage you need but you may try this one a 30n So, the bottom line is: The Vce in saturation is about 0. It start switching on at around 3V and it seems to be quite wide open at 4,5V.

Checking the datasheet is always a good suggestion. Thanks for pointing out that series.

With regard to 9V and 5V input, I presume you mean supply voltage. How can I find the current in the LED? This is not the gate voltage to turn the device on, its the gate voltage at which it switches fully off less than a few uA of current, typically.

The dissipation then is 5x5x0. For ratasheet BC it is a bit on the edge. You are limited to a current of about mA.

Thank you for this very good explanation.

Try just to test without the converter, 3. Excellent post, was very illuminating! Or am I overlooking something? Yes im using Arduino to control the circuit.

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IRF MOSFET Datasheet pdf – Equivalent. Cross Reference Search

eatasheet However it has a very low Rdson. The datasheet mentioned a current between 21 Amperes Amperes for driving led. The relatively cheap BUZ11 is also an option.

The question is the one joe provided a iff520 to in an earlier question, except just as you pointed out, his solution doesnt work because the emitter voltage will be close to 12V and the base voltage from the arduino will be 5V so the transistor will close.

This is for direct transfer so it is already mirrorred the right way. You may also consider the IRLZ At 5V volt on the gate, the IRF will pass something around 4. Email Required, ddatasheet never shown. Now you want to put current through a coil.

What type of step up converter are you using? Great, that is ir5f20 to know. Perhaps it is a lose wire or something. If you feed it with 15Volt the output voltage is around volt which will do the job. I can imagine that a SOT23 indeed can only take a current the size of 7 amps if there hardly is any dissipation read low RDSon.

Or for a power rectifier?