[Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

tomaja — Thu, 11 Dec 2014 21:35:41 GMT

I noticed a small difference between our designs so I was wondering am I missing something.

You feed your buck converter directly from battery rail and your boost converter from VSTOR (Load). Can you please let me know if there is any particular reason for that?

Shouldn't both of them be fed from VSTOR?

Edit: Just to be clear, I'm talking about BQ25504's VSTOR.

Thanks,

Dragan

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

michaelwylie — Thu, 11 Dec 2014 20:35:03 GMT

Good work. What's the load (current) going to be on your 3.3 Volt system?

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

DAB — Thu, 11 Dec 2014 19:58:05 GMT

Very good post.

Good explanation and description of the circuit and the process you use for doing your board layout.

Well done.

DAB

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

shabaz — Thu, 11 Dec 2014 13:17:59 GMT

Hi Inderpreet,

Wow, very nice circuit. The schematic is neatly laid out too!

It's great to see people doing so much surface-mount custom PCB design, switching power design and low-signal analog sensor integration in this design challenge!! : )

The parts creation in EAGLE can take a while at first, but its possible to get to the point where a part can be created in 5 minutes or less with EAGLE. I've created close to 400 parts in EAGLE.

(I'm sure others must have created thousands). Sometimes they were already in supplied libraries but often I want my own symbol, outline, etc.

Its also possible to automate it if you intend to use EAGLE often (for example, I have written code to generate any SIL, DIL or quad pads and automatically name, place outlines, etc.,

and tools to draw any arbitrary wound inductor, and so on. (all open source, files uploaded somewhere on element14).

Looking forward to seeing this take shape!! And also curious to see the solar charging and supercap in action!

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

ipv1 — Thu, 11 Dec 2014 10:41:33 GMT

Thank you. The logo is something that I usually use.

Http://Google.com/+InderpreetSingh

RE: [Firecracker Analyzer] Making the Power PCB with Eagle, TI BQ25504, TPS62740 and TPS61200

tomaja — Thu, 11 Dec 2014 09:30:39 GMT

This looks very nice! Well done.

Btw, you have the Sudden Impact logo on it [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6d0ec4e9-d6fe-4330-8ad5-255293d4ae2a/contentimage_5F00_1.png:16:16] I guess you will use it there too. No, it's just very similar [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-6d0ec4e9-d6fe-4330-8ad5-255293d4ae2a/contentimage_5F00_1.png:16:16]