The device offers spread spectrum clocking as an option. When SSC is enabled, the switching frequency is modulated in a triangular manner when in PWM mode using the internal clock. The frequency variation is typically between the nominal switching frequency and up to 20% above the nominal switching frequency set by R_CF. When the device is externally synchronized by applying a clock signal to the MODE/SYNC pin, the TPS6244x-Q1 follows the external clock and the internal spread spectrum block is turned off. SSC is also disabled during soft start and PFM mode.