Power Rails - Seco SBC-D23 User Manual

2.3.3

Power rails

In all the tables contained in this manual, the power rails are named with the following meaning:
V : Power In voltage (in the range +12V
IN
+12V_ALW: +12V power rail, directly generated from V
DC
between +12V and +16V , the 12V_ALW will not be equal to +12V
DC DC
+12V_BACKUP: external +12V power rail which can be supplied by an UPS Module plugged to connector CN3
DC
+5V_STBY:
+5V power rail, directly generated from VIN power rail, immediately available when VIN voltage is applied.
DC
+5V_SW:
main +5V power rail generated by the on-board PMIC from 5V_STBY power rail.
DC
+3P3V_RUN:
main +3.3V power rail generated by the on-board PMIC from 5V_STBY power rail.
DC
+3P3V_SW:
main +3.3V power rail generated by the on-board PMIC from +3P3V_RUN power rail.
DC
+3P0V_VDD_PMU: generic +3.0V
+1P8V_VDD: generic +1.8V power rail,
DC
+3V3_MOD: 3.3V power rail specific for M.2 and miniPCI-e slots, derived from +12V_ALW power rail upon SW enabling.
DC
+3P3V_OUT_EC:
3.3V power rail specific for the I/O connectors managed by the microcontroller, derived from +3P3V_SW power rail upon SW enabling.
+1P5V_PCIE: +1.5V power rail dedicated to the miniPCI-e slot, derived automatically from +3P3V_SW power rail
DC
VCC_uSD: dedicated +3.3V power rail for microSD slot,
DC
VDD_TOUCH: dedicated +5V power rail for external USB or I2C T/S controller, generated from the +5V_STBY Power rail once the +3P3V_RUN power rail is
DC
steady.
SBC-D23
SBC-D23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2021 SECO S.p.A.
..+24V ) directly coming from the Power Supply connectors CN44
DC DC
power rail, immediately available when V
IN
power rail,
generated by the on-board PMIC from +3P3V_RUN power rail.
DC
generated by the on-board PMIC from +3P3V_RUN power rail.
generated by the on-board PMIC from +3P3V_RUN power rail.
voltage is applied. Please be aware that with V
IN
but it will be equal to V Voltage
DC IN
voltage is
IN
18