DISCO-B4 H
ARDWARE
M
ANUAL
V
ERSION
1.0.3
5 DISCO-B4 APPLICATION INTERFACE
5.1 Power supply
The power supply for the DISCO-B4 unit has to be a single voltage source of V
+IN
=
+10.8 V
...
+32.0 V
DC. The operating voltage (V
+IN
) has to be permanently applied
to the
DISCO-B4
unit and able to provide sufficient current of up to
1.9 A
.
The operating voltage (V
+IN
and GND) is protected
against voltage spikes and reverse
polarity, but not against continuous-overvoltage.
NOTE: Operating voltage range must never be exceeded; care must be taken in
order to fulfill min/max voltage requirements.
5.1.1 Power supply pins (1 and 2) on the 8-pin connector
One
+IN
pin on the 8-pin double row connector is dedicated to connect the supply
voltage, and the GND pin for grounding.
Both
+IN
and
GND
pins serve for charging the internal Li-Polymer battery
(option) and powering the DISCO-B4 device.
DISCO-B4
has an automatic
power ON-function when external power is applied. The power supply for the
DISCO-B4 is capable of utilizing current ranging from
V
+IN
=
+10.8 V
...
+32.0 VDC
designed for automotive application.
Signal name
I/O
Parameter
Description
+IN
I
+10.8 V...+32.0 VDC.
The
operating voltage must never
be exceeded.
Positive operating voltage.
For security reason, it is recommended to integrate
externally a 2A fuse link between interconnection plug (8-
pin connector) and d.c.-power source (see Fig 15).
GND
-
0 V
Ground
5.1.2 Automatic shutdown
Automatic shutdown takes effect if:
•
battery voltage level runs low and external power
supply is
disconnected.
•
supply voltage is below the specified input voltage range.
This confidential document is a property of FALCOM and may not be copied or circulated without previous permission.
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