BS2sx and Heat Question
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I'm running a BS2sx stamp as well as a regular BS2 stamp. I notice
that the BS2sx stamp heats up quite a bit compared to the BS2 which
runs quite cool. Is this normal?
Eric Berg
that the BS2sx stamp heats up quite a bit compared to the BS2 which
runs quite cool. Is this normal?
Eric Berg
Comments
>I'm running a BS2sx stamp as well as a regular BS2 stamp. I notice
>that the BS2sx stamp heats up quite a bit compared to the BS2 which
>runs quite cool. Is this normal?
>
>Eric Berg
Hi Eric -
A couple of preliminary things before the answer to your question. No low speed
micro-processor should ever be so hot that you can't comfortably place your
finger on it. Make sure the heat is coming from the processor, and not an
on-board voltage regulator. V-R's can run quite hot depending on the difference
between the input and output voltages. Generally speaking, the greater the
voltage difference, the more the regulator must dissipate in heat.
In the case of the BS-2 vs. the BS-2SX, they have different underlying
micro-processors (Microchip PIC and Ubicom) and there is a significant speed
difference. The BS-2SX also has a higher rating for the I/O pin amperage
capacity so this too may add to the overall heat profile of the chip if the pins
are pushed to that capacity. That being said, the BS-2SX can run a bit hotter
than the BS-2.
Regards,
Bruce Bates
I'm giving 10V to the BS2sx and the BS2. The BS2sx is doing quite a
bit of heavy duty I/O work as well. I'll try running a few
experiments on it in light of your comments.
Eric
--- In basicstamps@yahoogroups.com, Bruce Bates <bvbates@u...> wrote:
> At 05:04 AM 2/8/04 +0000, Eric Berg wrote:
> >I'm running a BS2sx stamp as well as a regular BS2 stamp. I notice
> >that the BS2sx stamp heats up quite a bit compared to the BS2
which
> >runs quite cool. Is this normal?
> >
> >Eric Berg
>
> Hi Eric -
>
> A couple of preliminary things before the answer to your question.
No low speed micro-processor should ever be so hot that you can't
comfortably place your finger on it. Make sure the heat is coming
from the processor, and not an on-board voltage regulator. V-R's can
run quite hot depending on the difference between the input and
output voltages. Generally speaking, the greater the voltage
difference, the more the regulator must dissipate in heat.
>
> In the case of the BS-2 vs. the BS-2SX, they have different
underlying micro-processors (Microchip PIC and Ubicom) and there is a
significant speed difference. The BS-2SX also has a higher rating
for the I/O pin amperage capacity so this too may add to the overall
heat profile of the chip if the pins are pushed to that capacity.
That being said, the BS-2SX can run a bit hotter than the BS-2.
>
> Regards,
>
> Bruce Bates
BS2, but I've never had a problem with it. It definitely runs hotter
with higher input voltages so if you're powering it through Vin, try
to reduce it. I run mine around 7.5 volts and never have any
problems. Back before I knew what I was doing I ran it on 12V and it
ran really hot, but I still never had any problems (not recommended
nonetheless). Regards,
-Dave
--- In basicstamps@yahoogroups.com, "Eric Berg" <khufumen@y...> wrote:
> Thanks Bruce,
> I'm giving 10V to the BS2sx and the BS2. The BS2sx is doing quite a
> bit of heavy duty I/O work as well. I'll try running a few
> experiments on it in light of your comments.
>
> Eric
>
>
>
> --- In basicstamps@yahoogroups.com, Bruce Bates <bvbates@u...>
wrote:
> > At 05:04 AM 2/8/04 +0000, Eric Berg wrote:
> > >I'm running a BS2sx stamp as well as a regular BS2 stamp. I
notice
> > >that the BS2sx stamp heats up quite a bit compared to the BS2
> which
> > >runs quite cool. Is this normal?
> > >
> > >Eric Berg
> >
> > Hi Eric -
> >
> > A couple of preliminary things before the answer to your
question.
> No low speed micro-processor should ever be so hot that you can't
> comfortably place your finger on it. Make sure the heat is coming
> from the processor, and not an on-board voltage regulator. V-R's
can
> run quite hot depending on the difference between the input and
> output voltages. Generally speaking, the greater the voltage
> difference, the more the regulator must dissipate in heat.
> >
> > In the case of the BS-2 vs. the BS-2SX, they have different
> underlying micro-processors (Microchip PIC and Ubicom) and there is
a
> significant speed difference. The BS-2SX also has a higher rating
> for the I/O pin amperage capacity so this too may add to the
overall
> heat profile of the chip if the pins are pushed to that capacity.
> That being said, the BS-2SX can run a bit hotter than the BS-2.
> >
> > Regards,
> >
> > Bruce Bates
more heat. This is normal.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Eric Berg [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7fkaRtfY-RluQ_6iUfQ-TIV_87U7L8OgTvSPkyhnedR3RcgxXlGtjhVvC8F4BaxjhsE-rA5xG2_-ktUkXQ]khufumen@y...[/url
Sent: Saturday, February 07, 2004 11:04 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] BS2sx and Heat Question
I'm running a BS2sx stamp as well as a regular BS2 stamp. I notice
that the BS2sx stamp heats up quite a bit compared to the BS2 which
runs quite cool. Is this normal?
Eric Berg