SNVSBU3 March 2021 LP87702
The output voltage of BUCKx converter can be changed by writing to the BUCKx_VOUT register. The voltage change for buck converter is always slew-rate controlled, and the slew-rate is defined by the BUCKx_SLEW_RATE[2:0] bits in BUCKx_CTRL_2 register. The forced PWM mode is used automatically during a voltage change. When the programmed output voltage is achieved, the mode becomes the one defined by load current, and the BUCKx_FPWM bit.
Figure 7-6 shows the voltage change and power-good interrupts.