A typical application for the TPS38700 is shown in Figure 9-1. TPS38700 is used to provide the proper voltage sequencing for the target SOC device by providing enable signals to the DC/DC converters shown. These DC/DC converters are used to generate the appropriate voltage rails for the SOC. A mulitchannel voltage monitor is used to monitor the voltage rails as these rails power up and power down to ensure that the correct sequence occurs in both occasions. A safety microcontroller is also used to provide ACT, NIRQ, and I²C commands to the TPS38700 and the multichannel voltage monitor. The ACT signal from the safety microcontroller determines when the TPS38700 enters into ACTIVE or SHDN states while the NIRQ pin of the TPS38700 acts as an interrupt pin that is set when a fault has occurred. For instance, if an external device pulls the NRST pin low, then the TPS38700 will trigger an interrupt through the NIRQ pin. I²C is used to communicate the type of fault to the host microcontroller. The host microcontroller can clear the fault by writing 1 to the affected register. The power rails for the safety microcontroller are not shown in Figure 9-1 for simplicity.