Very efficient TEC driver build

[lulighttec]

Hi Guys,

Someone asked that I share my modified design for a TEC controller. This controller is fairly simple, but should be very efficient. I based it off of someone else's schematic, but as the parts they used weren't available anymore, I had to tweak it a bit. Also, the value of R1 can change depending on what kind of range you need from R3. You may even end up removing R1 altogether. D1 is a generic rectifier diode. This circuit is really designed to be a 2A circuit, but you probably won't use all of those Amps. I have to say, I had a bunch of help fine tuning the specifics of the circuit from the wonderful people in the chat room, particularly Heroic and J4cbo. Hope this is helpful to those who need it!

-LULightTec




P.S. In case the values are hard to read (had trouble moving the labels) here's a list:

R1: 10K
R2: 0.01 Ohm
R3: 50K
C1: 220uf
C2: 0.1uf
C3: 220uf
C4: 10nf
C5: 0.1uf
C6: 0.1uf
C7: 0.1uf
L1: 50uH
D1: generic rectifier single diode, Vf .457V
D2: SB540E-G diode
LM78L05 for regulating power supply
LT1959CS8 for controlling peltier

I deadbugged my chips onto my proto-board. If you feel like surface mounting instead of through-hole, go right ahead.

[absolom7691]

Thank you for sharing! I am going to need this to help finish my mitsu dually.