Gemalto M2M GmbH BGS5 Manuel D’Utilisation
Cinterion
®
Java Terminals Hardware Interface Overview
3.8 Power Supply
32
EHSxT_BGS5T_HIO_v01
2014-02-26
Confidential / Preliminary
Page 26 of 41
3.8
Power Supply
The power supply of the Java Terminals has to be a single voltage source of V
PLUS
=8V…30V
capable of providing a peak current (pulsed 2x577ms at T=4.615ms) of about TBD.A at 12V
during an active transmission. The uplink burst causes strong ripple (drop) on the power lines.
The drop voltage should not exceed 1V, but the absolute minimum voltage during drops must
be >7.6V.
during an active transmission. The uplink burst causes strong ripple (drop) on the power lines.
The drop voltage should not exceed 1V, but the absolute minimum voltage during drops must
be >7.6V.
The Java Terminals are protected from supply voltage reversal. An external fast acting fuse
>0.4A with melting integral I
>0.4A with melting integral I
2
t (0.15 … 0.25)A
2
s is necessary to use the Java Terminals at a
12V or 24V unlimited power supply system.
The power supply must be compliant with the EN60950 guidelines. A switching regulator reg-
ulates the input voltage for the internal supply.
ulates the input voltage for the internal supply.
When power fails for >1ms, Java Terminals reset or switch off. When power fails for >15s the
RTC will be reset.
RTC will be reset.
Figure 6: 6-pole Western jack for power supply, ignition, reset, typical connection
Mains adapter: If it fits into the design of your application we recommend the plug-in supply unit
used with the type approved Gemalto M2M reference setup. Ordering information can be found
in
used with the type approved Gemalto M2M reference setup. Ordering information can be found
in
. This 12V mains adapter comes with a 6-pole Western plug and provides an inter-
nal connection between IGT_IN pin and PLUS pin for auto ignition (power up).
Table 13: Female 6-pole Western plug for power supply, ignition, power down
Pin
Signal name
Use
Parameters
1
PLUS
Power supply
8V – 30V DC, max. 33V for 1 min
2
PLUS
Power supply
8V – 30V DC, max. 33V for 1 min
3
RST_IN
Signal for module reset
U
IH
> 8V for t>10ms resets the terminal.
U
IL
<2V and low level for normal operation.
4
IGT_IN
Ignition
U
IH
>8V
Ignition >8V for more than 200ms switches
the Java Terminals on. Ignition is activated
only by a rising edge. The rise time is
<20ms
the Java Terminals on. Ignition is activated
only by a rising edge. The rise time is
<20ms
5
GND
Ground
0V
6
GND
Ground
0V
Pin assignmment and typical connection:
1 PLUS
2 PLUS
3 RST_IN
4 IGT_IN
5 GND
6 GND
2 PLUS
3 RST_IN
4 IGT_IN
5 GND
6 GND
V
PLUS
DC
6 5 4 3 2 1