Other Parts Discussed in Thread: LM3409
We currently use an FPGA to generate complementary PWM signals for a TEC at 300kHz. We use these to cool detector diodes, and would like to go to higher frequencies to reduce detector noise. We've tried using dual synchronous buck controllers for this, but we've had problems with controller outputs being able to sink as well as source current. If we used the outputs differentially, could we use this controller to both heat and cool using a TEC?