Hi, new here guys, not a total newb but need a bit of help IR2110 Inverter

Hi,

I´m not sure what to do:
* being quiet
* or again repeating what I´ve already told

Klaus

re-did I hope this is better perhaps you would like to have some input that is free because I can't afford £300 you could say something constructive apart from "it's my life, I need to feed my kids!"

can you just help me out out of the kindness of your heart and make it for me for free it would be good karma you can be of help and design me a "proper" design for free!

Hi,

I definitely won´t do your job.

I will help you with text. I already wrote what I recommend you to do and why ... You seem to ignore it.
You expect something constructive ... but you ignore when I write these things.
You will have your reasons for this.

Examples:
I wrote:
"important: GND plane" --> Where is it?
"decoupling capacitors on EVERY pin of EVERY IC" --> where are they?
... low inductance, klevin style, fast capacitors... --> ignored
Datasheets say: "as short as possible" or "as close as possible" --> ignored
...and more ..

If you want a reliably working circuit ... you need to follow rules. Mind: These are not MY personal rules, but rules of physics.
You will find the same/similar informations by reading Application Notes, Datasheets, Design Notes. This is where I have a lot of my knowledge from.

I used words like "important" and "mandatory" to underline the importance.
All I´ve written is still available for reading.

I´m not angry, it´s not anythig personal ... it´s technical issues that need to be solved.

Klaus

KlausST said:

Examples:
I wrote:
"important: GND plane" --> Where is it?
"decoupling capacitors on EVERY pin of EVERY IC" --> where are they?
... low inductance, klevin style, fast capacitors... --> ignored
Datasheets say: "as short as possible" or "as close as possible" --> ignored
...and more ..

Click to expand...

please don't stop there these are constructive comments and I thank you! I am no expert and am still learning!
ok I am still considering paying for your service but I cannot pay £300 could you do it for £80? and give a helping hand for a knock down price?
so I have added the ground plane on either side of the board
what type of capacitors are kelvin style? film, ceramic? and what value do you recommend?
I'll make the capacitors closer to the pins!

is this better?? I need to know the type of capacitors I should use for the decoupling this will improve the design! I know the 10uf capacitors can be electrolytic, telling me the type of capacitors to use would be so helpful e.g. film, tantalum, ceramic etc!
to address the other things: Add a GND planes to both sides, that I can do! also I can get the caps closer to the IC chips!
could you tell me the other things I could improve on please
and please don't think I am ignoring you, I am sometimes a little slow on the uptake! thanks! try to bare with me!

KlausST said:

This (switching power) application needs careful PCB layout design. Breadboard is a no go.
GND plane, short wiring between IR2110 and transistors, kelvin style wiring of the Mosfet Gate and Source connections to the IR2110.
Careful wiring at all

Click to expand...

how do I kelvin style wire the Mosfet gate source connections to the IR2110

KlausST said:

you should add low ESR bulk capacitor on your PCB

Click to expand...

What is ESR bulk capacitor / do where do I put it?

KlausST said:

every IC/load (pin) means: U1, U2, U3, but also M1, M3 .. maybe more

Click to expand...

how do I add the caps to the M or in the case below Q

KlausST said:

I see M1 and M3 rather critical. They carry high currents with fast edges. And thus every stray inductance will cause a voltage spike across their D-S.
These spikes - even if narrow in the sub microseconds range - may slowly kill your MOSFET (maybe over months) and usually result in a big bang!!!

Click to expand...

again how do I put in the caps on the FET's and what value should I use / what do you recommend?

thanks

how do you take off the blue values in easyeda please, looks real messy there are only four types of cap 22uf electrolytic, 10uf electrolytic, 100nf and 330nf!
so before I go to design the board is there anything else I need to do or know? also can you tell me the best type of cap to use for the 100nf and 330nf please, thanks do I need any more caps on the input and output to the inverter or over the Arduino signal pins are there any that I've missed??? maybe 12volt on the CN1

so that last one is wrong because the MOSFET's have parasitic capacitance what are these "fast capacitors" please
going to use polyester film now
So I settled for this as my final design

so my PCB's are being posted tomorrow and take 8 to 12 business days to arrive will keep you guys updated