No I hadn't seen that. It looks very useful. Thanks.
> On Aug 16, 2017, at 11:24 AM, Nick wrote:
>
>> On Wednesday, 16 August 2017 01:48:18 UTC+4, Paul Andrews wrote:
>> BTW the zipped model works fne.
>
> That's good - have you seen this article:
> http://www.linear.com/solutions/5788 ?
>
>
On Wednesday, 16 August 2017 01:48:18 UTC+4, Paul Andrews wrote:
>
> BTW the zipped model works fne.
>
That's good - have you seen this article:
http://www.linear.com/solutions/5788 ?
Nick
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BTW the zipped model works fne.
On Sunday, August 13, 2017 at 10:29:17 AM UTC-4, Paul Andrews wrote:
>
> The flex model is at
> http://katalog.we-online.com/pbs/download/Download%20%20WE_FLEX%20LTspice%20(rev1).zip
>
>
> On Saturday, August 12, 2017 at 11:15:20 PM UTC-4, Nick wrote:
>>
>> In LT
The flex model is
at
http://katalog.we-online.com/pbs/download/Download%20%20WE_FLEX%20LTspice%20(rev1).zip
On Saturday, August 12, 2017 at 11:15:20 PM UTC-4, Nick wrote:
>
> In LTspice, if you go to *Tools -> Control Panel, *the select the *Netlist
> Options* tab, in the* Style/Convention* a
Hi Nick,
I will check when I get back to my computer.
> On Aug 12, 2017, at 11:15 PM, Nick wrote:
>
> In LTspice, if you go to Tools -> Control Panel, the select the Netlist
> Options tab, in the Style/Convention area click the Convert ... tickbox -
> that will make your capacitor values look
In LTspice, if you go to *Tools -> Control Panel, *the select the *Netlist
Options* tab, in the* Style/Convention* area click the *Convert ...* tickbox
- that will make your capacitor values look ok - modern versions of LTspice
convert "u" in component values to the Greek letter mu (i.e., "micro
Uploaded MyHVPS-NMdS.zip
On Saturday, 12 August 2017 20:21:42 UTC+4, Nick wrote:
>
> LTspice XVII(x64) June 19 2017 version on Windows 10 Pro 64bit.
>
> I always run a very recent version
>
> Maybe the upload somehow corrupted the files I'll zip them.
>
> Nick
>
>
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LTspice XVII(x64) June 19 2017 version on Windows 10 Pro 64bit.
I always run a very recent version
Maybe the upload somehow corrupted the files I'll zip them.
Nick
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I tried running this version, but the simulation window doesn't open and I
can't place probes on the circuit. I looked in the .asc file and fixed up
the path to the wurth model, but it made no difference. I have no idea how
to get that window back.
Also, the values of caps that were uF became o
HI - You LM3478 symbol pinout was wrong - you've got pins 5 - 8 flipped...
Its a slow deck for sure - I'll have a play with in in the next couple of
days.
Also attached slightly reformatted schematic to compensate for change in
the ASY file.
Annoying that the PSPICE model from TI has a differe
I put a file (MyHVPS.zip in the temp folder of our google drive).
On Saturday, August 12, 2017 at 9:32:18 AM UTC-4, Paul Andrews wrote:
>
> I am using an LM3478 library and a Wurth flex transformer library. I
> suspect that is where the time is going. I have zipped up the .asc file and
> the afo
I am using an LM3478 library and a Wurth flex transformer library. I
suspect that is where the time is going. I have zipped up the .asc file and
the aformentioned libraries (though the Wurth ones were pulled out of the
LTSpice library folder, so they are in the wrong place!). Hmm, I guess I
can
That doesn't sound right - If you post your stack I'm sure one of us with
more LTspice experience may be able to help. The LTspice Yahoo! group is
also an excellent resource for advice - the LTspice developers hang out
there and that's where the real knowledge is.
Nick
On Friday, 11 August 201
You really only need to run until the transients have settled-out. The
design I'm doing now runs at about 50kHz, and it takes 1-2 minutes to reach
15msec. Most of the transient activity ends around 3-4msec, but the runtime
isn't a nuisance yet.
Is the simulation running really slow in 1 partic
Thanks. I will check.
I wish I had a faster computer. It is taking about 15 mins to do a 8ms
simulation ATM. I wonder if there are any online versions? Hmm. I wonder if I
could use my own online servers or Amazon cloud? I've never used my own servers
for anything other web hosting/svn etc.
--
Make sure to look carefully at corner cases, like max-load at
min-input-voltage (typically causes max inductor current).
>From the app-note, I see there is a discrete NMOS transistor, and
thankfully a single inductor (not transformer), so your modeling is easier.
Be very careful about the volta
Varying load is easy - parameterise the load and use the .step param [name]
list val1,val2... command.
Nick
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Yes. I've got 3 different linear tech devices on my list. The LM3478 actually
has an LTSpice model and the Wurth flex transformer I'm using does too (from TI
and Wurth respectively). The circuit I put together simulates just fine, so I'm
just trying to increase my level of confidence in it at th
Have you considered using devices from Linear Technology (now Analog
Devices) ? You can run extensive simulations with LTSpice, using accurate
models for their ICs (I assume they are encrypted spice models).
I dont do bode plots for any of my designs; instead I rely heavily on spice
simulations
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