Using the test configuration shown in Figure 7-4, measure the unity-gain crossover frequency of each power module to be paralleled. Set the load to the maximum output current (I_OUT(max)) to be shared by each module. Figure 7-5 shows a typical resultant Bode plot. Select the plot with the lowest 0dB crossover frequency and assign that frequency to f_CO(module) for design use.

Figure 7-4 Connection Diagram for Unity-Gain Crossover Frequency Measurement

Figure 7-5 Power Module Bode Plot