New Bipolar Boost TX and Front End

[KingJL]

Bill of Materials

Here is the BOM generated by Kicad:
TX-BOM.zip

[KingJL]

Updated Design Files

I had to slightly change the two of the footprints for C21 & C22 (they are ceramic SMD 200V which did not come in a 1206 package) PCB layout and change C13 & C14 to non-polarized capacitors (although the footprints did not change. This resulted in an update to the schematic, the board, the Gerber files, and the BOM. They all have been updated and are included below:

[Mdtoday]

Looking good and nice work KingJL, thanks for sharing.
I'll have a good look over it and comment if I have questions or spot something.
If it all looks Ok, I might get some boards done through PCBway as I'd be interested in trying the design out

Again thanks for sharing

cheers

Mdtoday

[KingJL]

I was considering getting some boards made also. With JLCPCB, I can get 5ea 4 layer 10cmX5cm for <$25 US, 10ea 10cmx5cm <$30. I need to recheck everything first.

[Mdtoday]

I was considering getting some boards made also. With JLCPCB, I can get 5ea 4 layer 10cmX5cm for <$25 US, 10ea 10cmx5cm <$30. I need to recheck everything first.

That's a reasonable price. PCBway is about the same.

I had a look over your PCB design and it looks fine, the only comment I would make is the track width on some nets is a bit narrow for my liking (TX_A) for instance but still looks OK as is.
The only reason I mention it is that during protototyping stages, the finer tracks attached to say S08 footprint pads tend break a little more often than .25mm> tracks with parts being soldered/desoldered and the low weight copper cladding combination.

Anyways, I'll wait a couple days , have another look over it and then order some boards if it still looks ok...


cheers

Mdtoday

[KingJL]

... the only comment I would make is the track width on some nets is a bit narrow for my liking (TX_A) for instance but still looks OK as is.
The only reason I mention it is that during protototyping stages, the finer tracks attached to say S08 footprint pads tend break a little more often than .25mm> tracks with parts being soldered/desoldered and the low weight copper cladding combination...

I have (I think) changed all of the 0.127mm tracks to 0.254. It took a bit of rerouting (especially around J9 ). Here are the updated files:

[bklein]

Zener and driver pn’s seem to be EOL. Likely replacements but not sure for form factor.

[KingJL]

Zener and driver pn?s seem to be EOL. Likely replacements but not sure for form factor.

Not sure which drivers you are referencing. If is the MOSFET drivers, I already have them. They are also available on ebay.

[Mdtoday]

I have (I think) changed all of the 0.127mm tracks to 0.254. It took a bit of rerouting (especially around J9 ). Here are the updated files:

Nice work, yeah, that looks good.

The only other very minor thing is top overlay, some resistor markings (R32,R33 etc) overrunning transformer solder pads and C3 moved up.
I have attached pic but didn't post the KICAD files not to be lazy but rather just to have one set of originals.




cheers

Mdtoday

[KingJL]

... The only other very minor thing is top overlay, some resistor markings (R32,R33 etc) overrunning transformer solder pads and C3 moved up.

Picky... picky... picky! I have adjusted those as much as possible... should be clearer now. Also added 5V to pin 19 & 20 of J9 to support my intended FPGA interface ( will post that board shortly ),

[KingJL]

Artix-7 Interface Board

I plan to use the Artix-7 FPGA to genetrate the timing and post-process the pre-amp output ( https://store.digilentinc.com/cmod-a...7-fpga-module/ ). I have developed an interface board that will piggy back off of J9 and will accept the Artix-7 board. I already have the Arty S7 development board that I have been using to develop the logic modules and interface them to the microblaze embedded upc core. The Kicad files for the interface board:

[Mdtoday]

Picky... picky... picky! I have adjusted those as much as possible... should be clearer now. Also added 5V to pin 19 & 20 of J9 to support my intended FPGA interface ( will post that board shortly ),

Haha, yeah, Just thought while you are at it..

Your gonna hate me....C3 txt needs a shuffle... I'll shut up now



Ok on the 5v to J9 sounds like a good idea.

Will be interesting to see your FPGA when you get to it.

Thanks again for sharing.

Cheers

Mdtoday

[Mdtoday]

I plan to use the Artix-7 FPGA to genetrate the timing and post-process the pre-amp output ( https://store.digilentinc.com/cmod-a...7-fpga-module/ ). I have developed an interface board that will piggy back off of J9 and will accept the Artix-7 board. I already have the Arty S7 development board that I have been using to develop the logic modules and interface them to the microblaze embedded upc core. The Kicad files for the interface board:

Thank you for sharing, I'll go take a look at those modules.

Cheers

Mdtoday

[Mdtoday]

Are you using the A7-15T or A7-35T and which tool chain KingJL ?

I'd like to follow along on this project and keep things the same as much as possible



Cheers

Mdtoday

[KingJL]

Are you using the A7-15T or A7-35T and which tool chain KingJL ?

I'd like to follow along on this project and keep things the same as much as possible



Cheers

Mdtoday

35T.