\(\frac{V_{\text{CSD}}}{Q_{B}}=\int_{t_{0}}^{t_{f}}{\text{erfc}\left(\frac{G}{\sqrt{t}}\right)\text{\ dt}}\ -\int_{t_{0}}^{t_{f}}{e^{H^{2}t+2\ G\ H}\text{\ erfc}\left(\frac{G}{\sqrt{t}}+H\sqrt{t}\right)\text{\ dt}}\) (5)