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It works, I built a test circuit (still on a solderless breadboard) and I can drive the IRF3710 even at decent frequencies with this setup, but now something I am not really sure is happening, maybe you can help me figure it out.
I fear that depends on my test circuit : I am plotting on my DSO...
A small update :
I finally received the TC4420 drivers I ordered and tested them.
They seem to be really easy to use and they work fine with a 3.3V pwm signal as input.
So far I tested them only on a breadboard with jumper wires going around... I know, not the best setup and in fact I can see...
Hello again,
while i am waiting for some parts (the mosfet drivers and the mosfets) to arrive i have a very simple question, just something I wanted to double check with you.
I have seen drivers can be inverting or non inverting (or two combined inverting / non inverting) which i think comes...
Ah! Thanks Alenxan_e!
That's quite in line with what I was thinking, but I guess it might be something you can find empirically, probing the signal with a scope and checking the spikes + ringing there.
In general I would expect a small resistor between 0 and 4.7 Ohm max there, so one could just...
Ah, good to know... but why would I want to reduce the switching speed?
I understood (in a switching converter) we normally put a lot of effort to keep that speed as high as possible to minimize the transition times.
Yes FvM, you are obviously right.
As I tried to explain in my initial post, the goal is to produce a DC switching circuit such as a Buck / boost /sepic and there for sure I would have inductor and freewheeling diode.
I just neglected to represent them because I was only focusing on understanding...
Thanks for the comment FvM, which introduces another aspect I am trying to understand.
The maximum switching frequency I can use is limited by the rise and fall time of all the devices I have on the path of my pwm signal I suppose.
Normally low power devices (the drivers) are supposed to switch...
Hello again,
I checked the devices you suggested and I have to admit the seem more appropriate or at least their specs are higher than the driver I initially found.
The main difference is that those you suggested (TC) are mosfet based, while the ones I found (PMD) are based on bipolar...
Hello FvM, thanks for your suggestion.
my understanding is that I can switch a 12V between Emitter and Collector if I have a lower (3.3V , 5V) Voltage on the base, provided that enough current is provided to saturate the transistor (and the Vce, Vbe etc are in the limits of the device)...
Hello,
I am trying to understand how to use mosftets and drivers, I am still quite at a basic stage and my electronics knowledge is limited (I am more into the "software" world, but I'd like to change that).
Problem :
I have some DC source (i.e solar panels) which can give me about 80V (could...
Thanks CMOS,
I somehow feared that.
I found that there are driver for 3.3V operations and others, obviously for 5V... was not able to find a "flexible" one that would support automatically the two.
Do you know if such chip exists?
If not, what's the best solution? Adding a logic level converter...
Hello,
you can check the Arduino community for this kind of things.
Arduino is based on AVR chips and you can also install it on the Atmega8 (I installed it on a Atmega8-16PU).
There are bootloaders compatible with different AVR chips.
Reading an sd card is quite easy : you need an sd card...
Hello, I have been reading datasheets and many threads about the MAX485 and there is still one thing that is not totally clear to me.
The datasheet states that MAX485 should run at 5v and indeed on my breadboard I was able to power it at 5V and have it communicate successfully with an FTDI...
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