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1.3
Power section
The power section involves the power supply voltage (CN1, pin 1 for V
(eight loads can be connected between each pin of CN2, CN3, CN4, and CN12 and pin 2 of CN1), EMC
protections (U2), and supply reverse polarity protection (D1).
1.
ISO808-1
2.
Output and power supply connector
3.
Output channels - green LEDs
4.
Status (overtemperature) red LED
5.
Output Enable yellow LED
For EMC:
•
the
SM15T39CA
GND tracks to protect the
coupling;
•
in the common mode surge testing, two single-layer capacitors (C11 and C12 - not included) must be
soldered at the predisposed locations;
•
the
ISO808-1
IEC61000-4-3, IEC61000-4-4, IEC61000-4-5, IEC61000-4-8 standards.
The EMC performance of the
•
for emission (when the DC input port of the board is powered by an AC-DC, DC-DC or battery with a cable
that does not exceed a three-meter length), compliance with standards:
–
EN IEC 61000-6-3:2021
–
EN 55032:2015 +A1:2020
•
for immunity, compliance with standards:
–
EN IEC 61000-6-1:2019
–
EN 55035:2017 +A11:2020
UM3081 - Rev 1
Figure 3.
X-NUCLEO-OUT13A1 expansion board: power section components
transient voltage suppressor (U2), enabled by closing J9, is placed between V
ISO808-1
against surge discharge on the supply rail path up to ±1 kV/2 Ω
output stages do not require additional EMC protections with respect to the IEC61000-4-2,
X-NUCLEO-OUT13A1
, pin 2 for GND), the load connection
CC
is detailed below:
UM3081
Power section
and
CC
page 4/19
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