XMC4200 Platform2Go Series-V1
Hardware Description
Board Users Manual
11
Revision 2019-08-30
2.1
Power Supply
The XMC4200 Platform2Go Series-V1.1 must be supplied by an external 5 Volt DC power supply connected to
any of the micro USB plugs (X100, X101). The green Power LED (VDD3.3) indicates the presence of the
generated 3.3 V supply voltage.
On-board reverse current protection diodes will ensure safe operation in case power is provided through both
USB plugs at the same time. These protection diodes allows to use the on-board debug probe connected with a
PC/Notebook via X101 and a second host PC/Laptop connected with the XMC4200 via X100.
If the board is powered via a USB plug
, it’s not recommended to apply an additional 5 Volt power supply to one
of the 5 Volt power pins (VDD5, 5 V) on the pin headers X1 or X2 or the Arduino Power header, because there is
no protection against reverse current into the external power supply. These power pins can be used to power an
external circuit. But care must be taken not to draw more current than USB can deliver. A PC as USB host typically
can deliver up to 500 mA current. If higher currents are required and in order to avoid damages on the USB host
the use of an external USB power supply unit which is able to deliver higher currents than 500 mA is strongly
recommended.
Figure 6
Power Supply Concept
