Post links and discuss TEC drivers, TECS and sources for components!
I found this in my archives:
Elm-Chan TEC circuit with Atmel mcu
http://elm-chan.org/works/vlp/ldtmp.png
I did not find the firmware on the project page:
http://elm-chan.org/works/vlp/report_e.html
The d4chill by Robin Bowden:
http://www.die4laser.com/D4Chill/D4Chill_Sch.pdf
http://www.die4laser.com/D4Chill/D4Chill.jpg
http://www.die4laser.com/D4Chill/D4Chill.txt
Two from laserfreak.net:
http://laserfreak.net/forum/viewtopi...=130676#130676
http://laserfreak.net/forum/viewtopi...=135670#135670
Application report from Texas instruments /Burr-Brown with 3 good schematics:
http://focus.ti.com/lit/an/sbea001/sbea001.pdf
LINEAR TEC DRIVER–1
This is a bridge-tied load (BTL) linear amplifier for driving
a thermoelectric cooler (TEC). It operates on a single +5V
supply and can drive ±2A into a common TEC.
LINEAR TEC DRIVER–2
This is very similar to DRIVER–1 but its power output stage
was modified to operate from a single +3.3V supply in order
to increase its efficiency. Driving this amplifier from a
standard +2.5V referenced signal causes the output transistors
to have unequal power dissipation.
LINEAR TEC DRIVER–3
This BTL TEC driver power output stage achieves very high
efficiency by swinging very close to its supply rails, ±2.5V.
This driver can also drive ±2A into a common TEC. Operation
is shown with the power output stage operating on
±1.5V supplies. Under these conditions, this linear amplifier
can achieve very high efficiency.
Maxim-ic.com has several cheap TEC-controller IC's but they all seem to be in very small SMT packages.
A list with links to the different drivers are at the bottom of this application note:
http://www.maxim-ic.com/appnotes.cfm/an_pk/3318