SLUSEJ1 December 2021 TPSM8D6C24
Only the primary channel needs a resistor divider at the MSEL1 pin to program USER_DATA_01 (COMPENSATION_CONFIG) and FREQUENCY_SWITCH. The MSEL1 pin of secondary channels are not used. In this design, a moderate switching frequency of 550 kHz achieves both a small solution size and a high-efficiency operation. Use the MSEL1 pin program table to select the frequency option. See Table 7-8 for resistor divider code selection. With 550-kHz switching frequency, a single resistor to AGND can be used to program compensation settings 7 to 25. To program all 32 compensation settings possible through MSEL1, resistor divider code 6 or 7 sets the switching frequency to 550 kHz.