The device has a spread spectrum clocking function that can reduce electromagnetic interference (EMI). When the SSC function is active, the device modulates the switching frequency to approximately ±10% the nominal value. The frequency modulation has a triangular characteristic (see Figure 9-11).
To use the SSC function, make sure that:
To disable the SSC function, ensure that SCCEN = 0 in the CONTROL1 register.
To use the SSC function with multiple devices in a stacked configuration, ensure that the primary converter runs from its internal oscillator and synchronize all secondary converters to the primary clock (see Figure 9-14).
In the following device variants, which do not have I2C, the SSC function is permanently enabled: