Re: Vertical Mounted PCB on Switching Converters

D from BC ha scritto:
And now for something technical...

I've noticed smps's sometimes have a small vertical mounted PCB.. Most likely it's the controller..but not every smps is like this..
(For reference, see pictures of open chassis smps's on ebay.)

My initial guesses are:
1) Better grounding scheme
2) Orientation to dodge electric and magnetic fields from power components
3) Enables the controller PCB to be changed either before or after production
4) Enables single sided PCB
5) Enables shortest connection to power MOS or other
6) Orientation to dodge hot components

Is a vertical mounted controller PCB the best way in a smps? And what is the main reason it's designed like that?

D



Another features is that You can make a 70micron solder (or much more)
in a only Power board, with the vertical control board in smd.
All points You write is good, only for the 2 i don't know but i see
al lot of circuit with vertical board controller

Infineon 200W smps reference project for example

Emanuele


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Relevant Pages

  • Re: Vertical Mounted PCB on Switching Converters
    ... I've noticed smps's sometimes have a small vertical mounted PCB.. ... Most likely it's the controller..but not every smps is like this.. ... what it can give you is a standard SMT controller that can be used in various products, and the controller can also be tested before being soldered into the main smps, which can simplify the final tester. ... My last smps used a Fairchild controller that cost US$1.50 in volume; the one I am now doing (using this vertical PCB approach) costs NZ$0.25 1-off, and every part is multiple-sourced, but it needs about 4x the PCB area. ...
    (sci.electronics.design)
  • Vertical Mounted PCB on Switching Converters
    ... Enables the controller PCB to be changed either before or ... Enables single sided PCB ... Is a vertical mounted controller PCB the best way in a smps? ...
    (sci.electronics.design)
  • Re: TQFP handling while developing
    ... >realm of prototyping designs or parts of designs to ensure that you ... You are speaking from the little PCBs with the controller on it? ... >PCB materials. ... >Sounds like youi may need to also consider your decoupling philosophy ...
    (comp.arch.embedded)
  • More info
    ... understand I will have to start from "zero" to design the final hardware. ... be fed to the controller. ... PCB input modules together with the controller PCB will be developed. ...
    (comp.dsp)
  • Re: Data Acquisition - More details
    ... understand I will have to start from "zero" to design the final hardware. ... be fed to the controller. ... PCB input modules together with the controller PCB will be developed. ...
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