Select compensation components for a stable control loop using the procedure outlined as follows.

1. Based on a specified loop gain crossover frequency, f_C, of 40kHz, use Equation 31 to calculate R_COMP, assuming an effective output capacitance of 62µF. Select a standard value for R_COMP of 7.68kΩ. V_REF is V_OUT/10 if V_STEP is 10mV. V_REF is V_OUT/20 if V_STEP is 20mV.
   Equation 31. ${\mathrm{R}}_{\mathrm{C}\mathrm{O}\mathrm{M}\mathrm{P}}=2\times \mathrm{\pi }\times {\mathrm{f}}_{\mathrm{C}}\times \frac{{\mathrm{V}}_{\mathrm{O}\mathrm{U}\mathrm{T}}}{{\mathrm{V}}_{\mathrm{R}\mathrm{E}\mathrm{F}}}\times \frac{{\mathrm{R}}_{\mathrm{S}}\times {\mathrm{G}}_{\mathrm{C}\mathrm{S}}}{\mathrm{g}\mathrm{m}}\times {\mathrm{C}}_{\mathrm{O}\mathrm{U}\mathrm{T}}=2\times \mathrm{\pi }\times 40\mathrm{}\mathrm{k}\mathrm{H}\mathrm{z}\times \frac{12\mathrm{}\mathrm{V}}{1.2\mathrm{}\mathrm{V}}\times \frac{5\mathrm{}\mathrm{m}\mathrm{\Omega }\times 10}{1000\mathrm{}\mathrm{\mu }\mathrm{S}}\times 62\mathrm{}\mathrm{\mu }\mathrm{F}=7.79\mathrm{}\mathrm{k}\mathrm{\Omega }\mathrm{ }$
2. To provide adequate phase boost at crossover while also allowing a fast settling time during a load or line transient, select C_COMP to place a zero at the higher (1) one tenth of the crossover frequency, or (2) the load pole. Select a standard value for C_COMP of 4.7nF .
   Equation 32. ${\mathrm{C}}_{\mathrm{C}\mathrm{O}\mathrm{M}\mathrm{P}}=\frac{10}{2\times \mathrm{\pi }\times {\mathrm{f}}_{\mathrm{C}}\times {\mathrm{R}}_{\mathrm{C}\mathrm{O}\mathrm{M}\mathrm{P}}}=\frac{10}{2\times \mathrm{\pi }\times 40\mathrm{}\mathrm{k}\mathrm{H}\mathrm{z}\times 7.68\mathrm{}\mathrm{k}\mathrm{\Omega }}=5.18\mathrm{}\mathrm{n}\mathrm{F}$
3. Calculate C_HF to create a pole at the ESR zero and to attenuate high-frequency noise on the COMP pin. C_BW is the bandwidth-limiting capacitance of the error amplifier. 1pF C_HF can be ignored in this design. However, in noisy environments, especially at high V_IN and high load currents, additional capacitance can help filter out the noise.
   Equation 33. ${\mathrm{C}}_{\mathrm{H}\mathrm{F}}=\frac{1}{2\times \mathrm{\pi }\times {\mathrm{f}}_{\mathrm{E}\mathrm{S}\mathrm{R}}\times {\mathrm{R}}_{\mathrm{C}\mathrm{O}\mathrm{M}\mathrm{P}}}-{\mathrm{C}}_{\mathrm{B}\mathrm{W}}=\frac{1}{2\times \mathrm{\pi }\times 642\mathrm{}\mathrm{k}\mathrm{H}\mathrm{z}\times 7.68\mathrm{}\mathrm{k}\mathrm{\Omega }}-15\mathrm{}\mathrm{p}\mathrm{F}=17\mathrm{}\mathrm{p}\mathrm{F}$