The simple circuit in the figure adds a few low-cost components to a “dumb driver” to make it a smart one, with added short-circuit protection ... The microcontroller output goes high to ...

Figure 1 This 4 to 18V-input, 12V-output SEPIC has short-circuit protection. Figure 2 The short-circuit input and output current for the circuit of Figure 1 differ at different voltages.