The Sequencing Overview tab includes instruments to customize the power sequence of the PMIC. Note that the check boxes are power sequence masks. If a particular logic signal needs to be included as part of the regulator or logic power up sequence, leave the box next to the logic signal unchecked. TI recommends to set Power On Bit unmasked for each rail that is required in the application.

When using a TPS65033x-Q1 device, the GPIO pin can also be used for power sequencing of an external regulator or other device. In the Special Features tab, configure GPIO as an output to include its sequencing in the Sequencing Overview tab. Note that when using GPIO for sequencing, the GPIO Function must be Enabled.For reference, the GUI can generate example power-up and power-down timing diagrams based on the sequence settings present when the UPDATE TIMING DIAGRAM button is clicked. As noted, rise and fall times are approximate, and the maximum sequence length is 200 ms. Changes to regulator enable and output discharge settings are reflected in the timing diagram. If the sequence settings are not valid, the GUI will provide a notifying message and the timing diagram will not be updated. For example, if a regulator is enabled but fails to power-up within 200 ms, the sequence settings are not valid.