How I DESIGNED THIS Class D Audio Amplifier

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Күн бұрын

Пікірлер: 32

@MaxQ10001 Жыл бұрын

Nice video! One remark on decoupling capacitors: you recommend having their own via to the ground plane. Note that the via has quite high inductance. If possible, connect the decoupling directly to the ic on the same layer for both voltage and ground. And be really careful with copper pours on the signal layer. Many people just fill the top layer and make many antennas. Only make them where needed as guards and make sure stitching is done right. The high frequencies in modern ICs are not forgiving like they used to be.

@jcracoustics Жыл бұрын

Interesting points and good point on the decoupling ground return, thanks.

@aikonlatigid 19 күн бұрын

When you build class d amps, its easier to shield speaker + amp set with metal wire net instead filter coil especially when the goal just prevent EMI radiation

@paulhamacher773 10 ай бұрын

So you started with very limited knowledge of electronics and now did a presentation at the niveau of a senior electrical engineer? Just wow!

@jcracoustics 10 ай бұрын

Thanks man! Just shows there’s so much info out there to help us learn for free these days

@ettochetthalvore 9 ай бұрын

Damn man, nice videographics in the end, really good short consise explaining of PCB layout and overall nice video! I hope you get tons of more subscribers. As a soon to be starting youtuber i aspire to make videos half as good as yours and im happy!

@darshpatel8014 3 ай бұрын

Do you provide that hand written notes

@CharCharVG 9 ай бұрын

Really great video. I'm working on building my own. Mostly standard configuration but with some minor changes to start, more in the future as this will be my first board. I may have missed it from the video, but what was the power rating and impedance of your speaker choice? Default here is 4 ohm 50W per channel, which is what I'm going to use.

@hrmny_ 6 ай бұрын

What happened to the resources you wanted to link in the description?

@jcracoustics 5 ай бұрын

They should all be available on my website 👍

@moisestheentrepreneur637 5 ай бұрын

What version of Bluetooth chip did you install? LE Audio starts at Bluetooth 5.2 then you got codecs

@Paxmax 7 ай бұрын

I disagree with your definition of "bootstrap capacitors". Maybe you think the real answer is too long winded? Short: It is basically a replacement for a high(er) voltage supply rail that enables the use of n-type fet's on the high voltage side switcher position. Longer: It is essentially a very practical way of building a "charge pump dc-dc converter". It is not a feedback signal to increase amplification per se, it's a solution to a problem that appears when chosing the best (most common) type of transistors. P-type fet's are just not as cheap, efficient, sturdy and prolific as n-type fet's, there is an esoteric physics reason to why that is, but explaining that needs text, graphics and a whole different level of video. The bootstrap cap solution can be replaced by additional (low power) voltage rails.

@Dazzwidd 4 ай бұрын

nice man, chips make everyone top engineers these days 👍

@sifatbhuiyan9019 9 ай бұрын

Hello brother please help me !!!!!!!!! I have a TPA3255 IC and I want to make a pcb for it But in the datasheet of the IC has not shown the full diagram to make a Circuit For example pin number 18 is for reset but there has not shown how to connect to the circuit Please provide me the full diagram of TPA3255 IC ....

@toneking972 2 жыл бұрын

You have a video of how you got started in acoustics? what’s yours background

@jcracoustics 2 жыл бұрын

My acoustic/electronics background is mostly self taught. I did design engineering at university but learnt electronics whilst designing the amplifier through KZbin videos and the documents shared in the description!

@NirvanaWoodWorksbyJanie 2 жыл бұрын

Interesting video. Ran into your channel while researching ho to make/build diy bluetooth speaker. You are the first one that I've seen, ever, to use & take advantage of the touch feature, that seems to be everywhere now. Do you have a link for the touch control board? Thanks & HNY

@jcracoustics 2 жыл бұрын

Thanks for watching, yeh it was a fun board to develop as there's lot to learn about capacitive touch. I don't have a link to the board for now but I will be updating my website at some point with plans and such for sale. HNY to you too!

@joshuagardiner9096 Жыл бұрын

great video, what software did you use for the circuit schematic? I am looking to design my own class D amplifier using the TPA3116 but unable to find the component on the software I am using (multisim).

@jcracoustics Жыл бұрын

I used KiCAD, I have a tutorial on the Channel but sometimes you have to make the component footprints yourself as it won't have all of them.