SLVSCO4D July 2015 – February 2019 TPS65917-Q1
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
A power sequence is an automatic preprogrammed sequence the TPS65917-Q1 device configures its resources, which include the states of the SMPSs, LDOs, 32-kHz clock, and part of the GPIOs (REGEN signals). For a detailed description of the GPIOs signals, please refer to Section 5.9.
Figure 5-3 shows an example of an OFF2ACT transition followed by an ACT2OFF transition. The sequence is triggered through PWRON pin and the resources controlled (for this example) are: SMPS3 (VIO), LDO1, SMPS2, LDO2, REGEN1, LDO5, and LDO3. The time between each resource enable and disable (TinstX) is also part of the preprogrammed sequence definition.
When a resource is not assigned to any power sequence, it remains in off mode. The user (through software) can enable and configure this resource independently when the power sequence completes.
Figure 5-3 Power Sequence Example As the power sequences of the TPS65917-Q1 device are defined according to the processor requirements, the total time for the completion of the power sequence will vary across various system definitions.