Battery And External Power Supply; Hardware Changes (For V1.1 Only); Figure 3 Block Diagram - Power Supply Concept; Figure 4 P8 Header Configuration For Using Battery Or External Power Supply - Infineon MCU4 Manual

Radar Baseboard MCU4
XENSIV™ 24 GHz radar system platform
Hardware description – Radar Baseboard MCU4
Debug (X6)
Micro
USB
5Vdebug
LDO
XMC4200
(Debugger)
Figure 3 Block diagram – power supply concept
2.3.1

Battery and external power supply

The Radar Baseboard MCU4 can be powered up with an external power supply (7 V) to operate the board. It is
also possible to charge the battery using an onboard battery manager. This section explains the battery
charging and external power supply feature of the board.
2.3.1.1

Hardware changes (for V1.1 only)

To start up the XMC4700 with external 7 V power supply or battery, it is important to first carry out these steps:
Configure the P8 header as shown in Figure 4 (1, 2 connected and 5, 6 connected).
•
Remove the P9 header to release the XMC4700 from RESET.
•
Figure 4 P8 header configuration for using battery or external power supply
Application Note
Default (X5)
Battery Manager
5Vinput
Battery
3.3V
Main XMC4700 Normal Boot
TCK
0
External Power Supply
7V
Micro
LDO
USB
5Vinput
5V
LDO
R
shunt
3.3V
Current Sensors
Baseboard
MCU4
1
2
TMS
2 1
1
8
VCC1
RF Shield
V2.1
2023-02-14