ETAS
Hardware Description
BR_XETK-S2.0
-
User Guide
19
4.4
Power Supply
The BR_XETK
-
S2.0 requires a permanent power supply. It is typically powered
directly from the car battery. The input voltage may vary between 4.3
V and
36
V. In case of higher input voltages to the BR_XETK
-
S2.0, additional voltage
protection is required. The BR_XETK
-
S2.0 will also accept voltage dips down to
3
V, for a maximum duration of 15ms (for additional details of low voltage oper
-
ation, see ISO standard 16750)
From the input battery voltage, switch-mode power supplies provide all neces
-
sary voltages on the BR_XETK
-
S2.0. The power supply of the ECU is not
affected by the BR_XETK
-
S2.0. An automatic switch ensures that the power
supply of the BR_XETK
-
S2.0 is automatically switched on and off when the
BR_XETK
-
S2.0 enters and leaves its standby (sleep) mode.
The BR_XETK
-
S2.0 is supplied with power through the connector CON4.
Fig.
4
-
5
Location of the BR_XETK
-
S2.0 Power Supply Connectors
CON4