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Voltage Regulator runs hot #1

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
early Open EVSE boards with no vias (small gold colored circles) next to the 
large tab of the regulator.

What is the expected output? What do you see instead?
Regulator should not be so warm

To allow the regulator to disipate more heat into the ground plane, scrape away 
the coating to expose the copper layer above the large tab of the regulator. 
Then solder the ground plane and allow it to flow to the large tab.

The regulator will run much cooler.

Expose Copper
<a href="http://www.flickr.com/photos/60192309@N05/6887966107/" 
title="2012-02-16_09-09-44_661 by chris1howell, on Flickr"><img 
src="http://farm8.staticflickr.com/7185/6887966107_7464d897c9_z.jpg" 
width="640" height="360"></a>

Solder to tab
<a href="http://www.flickr.com/photos/60192309@N05/6887959063/" 
title="2012-02-16_09-09-57_873 by chris1howell, on Flickr"><img 
src="http://farm8.staticflickr.com/7064/6887959063_e2dd245600_z.jpg" 
width="640" height="360"></a>

Original issue reported on code.google.com by chris1howell83 on 16 Feb 2012 at 9:23

GoogleCodeExporter commented 9 years ago

Original comment by chris1howell83 on 16 Feb 2012 at 9:24

GoogleCodeExporter commented 9 years ago

Original comment by chris1howell83 on 2 Jul 2012 at 10:00

GoogleCodeExporter commented 9 years ago 
Expose Copper
http://farm8.staticflickr.com/7185/6887966107_7464d897c9_z.jpg
Solder to tab
http://farm8.staticflickr.com/7064/6887959063_e2dd245600_z.jpg

Original comment by chris1howell83 on 19 Oct 2012 at 11:09