During initialization the TPS65983B enables device internal hardware and loads default configurations. The 48-MHz clock is enabled and the TPS65983B persistence counters begin monitoring VBUS and VIN_3V3. These counters ensure the supply powering the TPS65983B is stable before continuing the initialization process. The initialization concludes by enabling the thermal monitoring blocks and thermal shutdown protection, along with the ADC, CRC, GPIO and NVIC blocks.