Hello,

I have a question for which I have not found a concise answer after
having searched the web. While researching the use of MOSFETs for
switching a load (in this case a resistive heater element) I have often
seen the terms "high side" and "low side" switching. There are
specialized gate drivers for each configuration, none of which I need;
I'm just curious about their use. I understand the terms high side and
low side as applied to an H bridge, but this seems to be a different
usage. 

I have gathered that the "high side" is simply an inline MOSFET that
sources/sinks the load. Is that correct?

I have not come across an explanation of the "low side" switch. More
accurately, I have not found an explanation that was complete enough for
me to follow.

If anyone would be so kind as to explain these terms, or point me to
suitable reference material, I would appreciate it. Thanks!

- Glenn Minch

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist