Toradex Colibri - Page 40

Colibri Carrier Board Design Guide
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If the internal RTC of the module is not used or the analog audio and resistive touch interface are
not required, the carrier board power supply can be further simplified. It is crucial that even if RTC
or the analog interfaces are not used, its corresponding supply rails need to be served by the
carrier board.
Figure 27: Power Block Diagram (without RTC and analog interfaces)
7-24V
Enable
Enable
Module
3.3V
RTC
nRESET_EXT
nRESET_OUT
CTRL_WAKE_0
5V
Analog
Circuit
AVDD_AUDIO
VCC_BACKUP
VCC
5V
Buck
3.3V
Buck
Peripheral
Devices on
Carrier Board
Power Management
7-24 V
input
Jack