ETAS
Hardware Description
XETK-S30.0 - User’s Guide
20
4.4
Power Supply
The XETK-S30.0 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 XETK, additional voltage protection
is required. The XETK-S30.0 will also accept voltage dips down to 3 V, for a
maximum duration of 15ms (for additional details of low voltage operation, see
ISO standard 16750)
From the input battery voltage, switch-mode power supplies provide all neces-
sary voltages on the XETK-S30.0. The power supply of the ECU is not affected
by the XETK-S30.0. An automatic switch ensures that the power supply of the
XETK-S30.0 is automatically switched on and off when the XETK enters and
leaves its standby (sleep) mode.
The XETK-S30.0 is supplied with power through the connector CON4.
Fig. 4-5
Location of the XETK-S30.0 Power Supply Connectors
CON4
CON1
CON2
CON3