Post #4196223

You can use a buck converter as a buck-boost converter. As in, get negative voltage. I just checked. On paper. And guess what? They are nearly identical. The schematic of one turns into the other. The only difference is the negative side of the input capacitor. Mind=blown. There are application notes for how to reconnect your converter, but even they don't notice it's THE SAME TOPOLOGY! https://www.ti.com/lit/pdf/slyt286 #electronics #smps #dc