This user’s guide describes a power distribution
network (PDN), PDN-2A, using a single TPS6594-Q1 PMIC and a few discrete components
to power the DRA821 processor and peripherals.
Note: PDN-2A for DRA821 is recommended for solutions
not requiring board level isolation of the MCU power for an additional lower
power mode.
The following topics are described to clarify
platform system operation:
- PDN power resource
connections
- PDN digital control
connections
- Primary and secondary PMIC
static NVM contents
- PMIC sequencing settings to
support different PDN power state transitions for an advanced processor
system
PMIC and processor datasheets provide recommended operating conditions,
electrical characteristics, recommended external components, package details,
register maps, and overall component functionality. In the event of any
inconsistency between any user's guide, application report, or other referenced
material, the data sheet specification is the definitive source.