Power Supply; Power Management; Figure 3: Power Management Block Diagram - Renesas DA16200 H/W User Manual

UM-WI-006
DA16200 H/W Design Guide
2.2

Power Supply

2.2.1

Power Management

The DA16200 has one internal DC-DC converter and multiple LDOs to supply power to all internal
sub-blocks. Power management performs the on-off control of these regulators and is implemented
through the register setting inside the RTC block.
QFN,
fcCSP normal power
VBAT
Details of the internal DC-DC converters and LDOs are explained below:
●
DC-DC converter: from the power supply of external VBAT input, it generates 1.4 V power for
the digital LDO and RF block
●
LDO for digital Blocks: from the DC-DC output, it generates 1.1 V power which is used for
digital blocks
●
LDO for I/O and external flash memory:
○
This LDO output is used only for 1.8 V digital I/O applications
○
From external VBAT power input, it generates 1.8 V output voltage which is used for digital
I/O power domain in 1.8 V digital I/O applications
○
It is also used for external flash memory
○
For 3.3 V digital I/O applications, external power (3.3 V) is directly supplied for digital I/O
power
●
FDIO_LDO_OUT supports only 1.8 V
Internal DC-DC converters and LDOs generate enough power for all of the DA16200's internal sub-
blocks.
User Manual
CFR0012
VDD_PA, VDD_RF
fcCSP low power
DCDC
FDIO_LDO 1.8V
Using the same power supply as
external device ( ex.CPU) ( 1.8V or 3.3V)

Figure 3: Power Management Block Diagram

Revision 1.5
11 of 44
1.4V
1.1V
DIG_LDO
VDD_FDIO
VDD_DIO1
VDD_DIO2
NDA Confidential
RF Block
Digital Core /
Memory
RTC Block
Flash control
/ External
Flash Memory
GPIOs
11-Apr-2022
© 2022 Renesas Electronics