Subject: Re: PRIVATE Re: Fwd: Re: pics
From: rotaryeng
Date: 11/29/2013, 5:09 AM
To: Robert LeClercq

Looks OK to me

You will get faster :)

More traces on the bottom layer would save space.

Paul


On 11/28/2013 10:07 PM, Robert LeClercq wrote:
Spent 3 days trying to kram 4 # of parts into a 2# pcb. Tried it 3-4 ways. Here's the best I could get. I couldn't do what I want for the bot side. Tried the fill and the keep out space, but couldn't work it. I want to maximize the copper area for Q1 Q2 heat sinking and allow .1" creepage distance where I had to use vias and traces. I can fit 4 of these 2x3 pcb into the black box I showed you?


On Thursday, November 28, 2013 2:39 PM, Robert LeClercq <rcl41244@yahoo.com> wrote:
No the 2 parts I sent are push/pull, but I have a few half bridge parts if you want. fan7621, si8603-c-1s, fan7382, irs2184,ir2153d, irs2003,fan7842. All at Digikey.



On Thursday, November 28, 2013 2:10 PM, rotaryeng <rotaryeng@earthlink.net> wrote:

are these high side and low side with floating supply?

P

On 11/28/2013 01:27 PM, Robert LeClercq wrote:
> I guess it could be used that way if you get the phasing correct. You
> can get drivers just for push/pull of course.
> uc3846, uc3825. Unitrode has various models.
>
>
>
> On Thursday, November 28, 2013 12:45 PM, rotaryeng
> <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>> wrote:
> what is wrong with it for transformer switching?
>
> Paul
>
> On 11/28/2013 11:14 AM, Robert LeClercq wrote:
> > Digikey still has 1000s of the fan dip in stock.
> >
> >
> > On Thursday, November 28, 2013 10:02 AM, rotaryeng
> > <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>> wrote:
> >
> >
> > I told you that the DIP pkg FAN part is not recommended for new designs.
> > That's why I went with SMD. It turns out that was necessary to fit into
> > a 2x3 pcb. I still need your help to figure out the copper filling.
> >
> >
> > Is there a through hole part that is better? I am switching just the
> > capacitor
> > not an inductance directly.
> >
> > select the lower layer
> > Put the pointer on the upper left corner of the board
> > drag it down to the lower left corener
> > than over to the lower right corener
> >
> > and up to the upper right corner
> >
> > press the right mouse button and you are done.
> >
> > This is the control strategy i am going to use for the ign .
> >
> > I am going to gate the 555 oscillator on and off with pin 5
> > and an open collector bipolar switch
> >
> > I have a bunch of these lying around.
> >
> > ON 22 degrees BTDC Off 160 degrees ATDC
> >
> > p
> >
> >
> > On Thursday, November 28, 2013 2:18 AM, rotaryeng
> > <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>> wrote:
> >
> > I like that FAN 7392M
> >
> > One has more control over
> > what happens with a separate osc than the IR part with
> > built in osc
> >
> > I think I am going to change my CD design to use it.
> >
> >
> > Paul
> >
> >
> >
> > The FAN7392M is not in the component list
> > so you may have to make a custom component
> >
> > Paul
> >
> >
> >
> >
> > when you start the sch select .1 inch snap
> > and all pins on components will be on intersections.
> >
> > It looks like you had snap off or set to metric
> >
> >
> > I had to set the snap to .025" to clean it up.
> > it was set to .05"
> >
> >
> > don't try to draw corners
> >
> > just go from pin to pin and add the corners with the corner tool
> >
> > Paul
> >
> >
> >
> >
> > On 11/27/2013 10:18 PM, Robert LeClercq wrote:
> > > Paul
> > > Can you fix the botched up connections on this schem? I want to use it
> > > to correlate with the layout.
> > > R
> > >
> > >
> > > On Wednesday, November 27, 2013 4:02 AM, rotaryeng
> > > <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>
> > <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>>> wrote:
> > > I solved the HV problem with a keep out area for the bottom
> > > ground plane
> > >
> > > P
> > >
> > > On 11/26/2013 06:13 PM, Robert LeClercq wrote:
> > > > I'm almost done with the layout. I pay extra attention with
> clearance
> > > > around the HV. But what do you mean by clearance?
> > > >
> > > >
> > > >
> > > > On Tuesday, November 26, 2013 5:11 PM, rotaryeng
> > > > <rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>
> > <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>>
>
> > <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>
> > <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>
> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net> <mailto:rotaryeng@earthlink.net <mailto:rotaryeng@earthlink.net>>>>>>
> > wrote:
> >
> >
> > > > PRIVATE
> > > >
> > > > I finally found a gate driver better than six CD4050 buffers.
> > > >
> > > > TC4428
> > > >
> > > > But not by much :)
> > > >
> > > > Paul
>
> > > >
> > > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
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>
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