The TPS65262-1 incorporates a peak current mode control scheme. The error amplifier is a transconductance amplifier with a gain of 300 µS. A typical type II compensation circuit adequately delivers a phase margin between 60° and 90°. C_b adds a high frequency pole to attenuate high-frequency noise when needed. To calculate the external compensation components, follow these steps.

1. Switching frequency, ƒ_sw, 600 kHz is appropriate for application depending on L and C sizes, output ripple, EMI, and so forth. It also gives the best trade-off between performance and cost.
2. Set up crossover frequency, ƒc, which is typically between 1/5 and 1/20 of ƒ_sw.
3. R_C can be determined by Equation 16.
   Equation 16.

   where

   • G_{m_EA} is the error amplifier gain (300 µS)
   • G_{m_PS} is the power stage voltage to current conversion gain (7.4 A/V)
4. Calculate C_C by placing a compensation zero at or before the dominant pole
   Equation 17.
5. Optional C_b can be used to cancel the zero from the ESR associated with C_O.
   Equation 18.

Figure 9-1 DC/DC Loop Compensation