I'm slowly leaving my noob status behind, but still don't know exactly what I'm doing. I think I'm finally (after several months now) close to having this circuit figured out. I'm planning on using a microcontroller to control a synchronous DC buck converter to power some peltier devices. My schematic is attached below.
I have a couple of remaining questions I was hoping I might find some help with. A point of clarification, the software I used to create this schematic has limited representations of power supplies. Where I have a voltage source which connects back to itself, I'm trying to illustrate that that loop is floating, not that it is necessarily a battery.
-Is my microcontroller correctly isolated?
-Are things floating correctly?
I'm pretty lost here. The power supply into the buck converter is two 15V supplies in series which I think I can wire without connecting either of them to earth.
-Am I missing pull up or pull down resistors?
-Do my capacitor sizes seem reasonable?
Any help would be appreciated. I was hoping to have learned all of this and completed this project about 6 weeks ago. Thanks in advance
I have a couple of remaining questions I was hoping I might find some help with. A point of clarification, the software I used to create this schematic has limited representations of power supplies. Where I have a voltage source which connects back to itself, I'm trying to illustrate that that loop is floating, not that it is necessarily a battery.
-Is my microcontroller correctly isolated?
-Are things floating correctly?
I'm pretty lost here. The power supply into the buck converter is two 15V supplies in series which I think I can wire without connecting either of them to earth.
-Am I missing pull up or pull down resistors?
-Do my capacitor sizes seem reasonable?
Any help would be appreciated. I was hoping to have learned all of this and completed this project about 6 weeks ago. Thanks in advance
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