User Manual
29
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Power Management Unit (PMU)
6.2.1
Block Diagram
The following figure shows the structure of the Power Management Unit.
describes the submodules
more detailed.
Figure 4
Power Management Unit Block Diagram
Table 6
Description of PMU Submodules
Mod.
Name
Modules
Functions
Power Down
Supply
Independent Supply Voltage
Generation for PMU
This supply is dedicated to the PMU to ensure an
independent operation from generated power supplies
(VDDP, VDDC).
LP_CLK
(=
f
LP_CLK
)
- Clock Source for all PMU
submodules
- Backup Clock Source for System
- Clock Source for WDT1
This ultra low power oscillator generates the clock for
the PMU.
This clock is also used as backup clock for the system in
case of PLL Clock failure and as independent clock
source for WDT1.
LP_CLK2
(=
f
LP_CLK2
)
Clock Source for PMU
This ultra low power oscillator generates the clock for
the PMU in Stop Mode and in the cyclic modes.
Peripherals
Peripheral Blocks of PMU
These blocks include the analog peripherals to ensure a
stable and fail safe PMU startup and operation
(bandgap, bias).
Power_Management.vsd
Power Down Supply
LP_CLK
LP_CLK2
Peripherals
Power Supply Generation Unit
(PGU)
LDO for External Supply
VDDEXT
PMU-WMU
LIN
MONx
PMU-PCU
PMU-SFR
PMU-RMU
PMU-CMU
e.g. for WDT 1
e.g. for cyclic wake
VS
VDDP
VDDC
VDDEXT
Power Management Unit
PMU-Control
I
N
T
E
R
N
A
L
B
U
S