SLUSEJ1 December 2021 TPSM8D6C24
Only the loop controller device (U1) needs a resistor divider at the VSEL pin to program the output voltage. The VSEL pin of loop follower devices are not used. The resistor divider code selected for this 0.8-V output example using Table 7-12 is a single resistor to AGND. With the resistor divider code selected for the range of VOUT, select the resistor to AGND code with the VOUT_COMMAND Offset and VOUT_COMMAND step from the Table 7-13. With VOUT = 0.8 V, VOUT_COMMAND(Offset) = 0.5 V and VOUT_COMMAND(STEP) = 0.05, the result is code 6. A 14.7-kΩ resistor to AGND at VSEL programs the desired setting.