## 4 Comparison with a Design Example and Experimental Results  
Experimental results were obtained with: (i) the traditional boost converter; (ii) the LVC converter working in the former operation, and (iii) the LVC converter working in the proposed operation. The same operating condition was reproduced with the three converters for comparison purposes. The results (as will be shown) demonstrate that the proposed operation leads to a lower voltage ripple at the output port with the same components and operating conditions. Let us first discuss the traditional boost converter's parameters to have a better idea of the capacitor's difference. We can imagine that we use two capacitors in a series of the same capacitance (the capacitances are \(C_{1}=10\) uF and \(C_{2}=10\) uF). The inductor is \(L=250\) uH, the switching frequency was chosen as \(f_{S}=20\) kHz, and the duty cycle of the boost converter for the comparison is \(D=0.8\). The input voltage is \(Vin\) = 15 V. The load resistance is \(R=200\)\(\Omega\). The switches used were the TPH3212 PS GaN-FET for all devices. The duty cycle was chosen to have the same voltage gain that the LVC converter would have when \(D=0.6\). It is essential to mention that the split of the capacitors does not affect their stored energy and then the total volume. Figure 8 shows the schematic diagram of the boost converter, and Figure 9 shows some key waveforms of the operation. Figure 8: Schematic of the traditional boost converter. The voltage at the switch \(s_{a}\) is depicted in dark gold color at 20 V per division (see Figure 9); it seems like a square signal whose peak is at approximately 60 V (the same as the output voltage). The input voltage is 15 V, and the output voltage is 60 V. If we have only one capacitor, the output capacitor must also block the output voltage (60 V), in the case of the split capacitors, each of them blocks 30 V. The green triangular waveform is the inductor current at 1\(A\) per division. The pink signal is the output voltage at 20 V per division, and the blue signal is the zoom in the output voltage ripple, basically the output voltage with ac coupling and a zoom-in at 2 V per division. The parameters of the LVC converter are inductors \(L_{1}\) and \(L_{1}\) are \(L_{1}=250\) uH, \(L_{2}=250\) uH, capacitors are \(C_{1}=10\) uF, and \(C_{2}=10\) uF, the switching frequency \(f_{S}=20\) kHz, and the duty cycle \(D=0.6\). The input voltage is \(Vin=15\) V. The load resistance is \(R=200\)\(\Omega\). Figure 10 shows the schematic diagram of the LVC converter. Figure 11 shows some key waveforms of the LVC converter in the traditional operation, while Figure 12 shows the same waveforms for the proposed operation. Figure 10: Schematic of the LVC converter used for the experimental results. Figure 9: Signals in the traditional boost from the bottom to the top, the switch voltage (gold), the inductor current (green), the output voltage (purple), and a zoom in the output voltage ripple (blue). The colors and resolution of the signals are equal to the boost converter. In dark gold color (see Figures 11 and 12), the voltage at the switch \(s_{a}\) is depicted at 20 V per division; this seems like a square signal with its peak at approximately 40 V. The input voltage is 15 V, and the output voltage is 60 V, the voltage blocked by transistors when they are open is also smaller than the output voltage, which is another advantage over other step-up topologies, in which transistors must be rated to block the output voltage. Devices always require a larger voltage to have a security margin, but this is usually a percentage of their real voltage; for example, if 100% of safety margin is chosen, transistors in this converter would be rated to 80 V (to block 40 V), but in a converter in which they block 60 V, we would need 120 V devices. The green triangular waveform is the inductor \(L_{1}\) current at 1\(A\) per division. It can be seen that their average current is at approximately 1\(A\); this signal was also used as the trigger for the oscilloscope.