Hi, I’d like to drive a thermoelectric cooler (peltier) efficiently for both heating and cooling at about 24 volts 15amps maximum.
The drive circuit for this task involves a H bridge and some inductors and capacitors. An example power stage is detailed here (ignore the controller IC): http://www.linear.com/product/LTC1923
I would like to know if the Core/Photon is capable of safely managing the various PWM gate drive waveforms as well as dead time that is required.
I would like to build a circuit with mosfet drivers that are controlled form the spark, but I am weary that any non-realtime behaviour (missed or delayed interrupts etc.) could cause big problems like shoot through, or simply losing output regulation.
Is the spark core capable of this kind of task?
For the record, I’m avoiding motor driver ICs because all of the ones I’ve found are limited to 20 or 25 KHz and at 15 amps the required magnetics are VERY expensive for such a low frequency.
Advice and suggestions welcome!