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Toradex Apalis Series - 3.2 Power Block Diagram; 3.3 Power States

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Apalis Carrier Board Design Guide
Toradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com
Page | 64
3.2 Power Block Diagram
Figure 55: Power Block Diagram
3.3 Power States
The Apalis module and carrier board supports different power states. The following table describes
their behavior during the different states and shows which power rails and peripherals are active.
These are just the standard power state. If additional power saving is necessary, it is possible to
introduce other states in which some of the carrier board peripherals are switched off. In this case,
free GPIO can be used to switch off unused peripheral power rails.
7-24V
Enable
Enable PWR_OK
Module
3.3V
RTC
RESET_MICO#
RESET_MOCI#
POWER_ENABLE_MOCI
WAKE1_MICO#
5V
Analog
Circuit
AVCC
VCC_BACKUP
VCC
3.3V
Filter
5V
Buck
3.3V
Buck
Peripheral
Devices on
Carrier Board
Power Management
RTC
Battery
7-24 V
input
Jack
For better quality use
dedicated LDO from 5V rail
100k
(optional)

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