The TPS23754 device provides a fixed internal compensation ramp that suffices for most applications. RS (see Figure 31) may be used if the internally provided slope compensation is not enough.
Most current-mode control papers and application notes define the slope values in terms of VPP / TS (peak ramp voltage / switching period). However, the electrical characteristics table specifies the slope peak (VSLOPE) based on the maximum (78%) duty cycle. Assuming that the desired slope, VSLOPE-D (in mV/period), is based on the full period, compute RS per the following equation where VSLOPE, DMAX, and ISL-EX are from the electrical characteristics table with voltages in mV, current in μA, and the duty cycle is unitless (for example, DMAX = 0.78).
CS may be required if the presence of RS causes increased noise, due to adjacent signals like the gate drive, to appear at the CS pin.