MC55i Terminal Hardware Interface Description
4.6 Power Supply Ratings
41
MC55i_Terminal_HD_v01.201a
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2010-04-16
Confidential / Released
4.6
Power Supply Ratings
Table 21:
Power supply specifications (to be defined)
Parameter
Description
Conditions
Min. Typ
Max. Unit
V
PLUS
Allowed voltage ripple (peak-
peak), drop during transmit
burst peak current
TALK mode, power control
level for P
out
max
1
1.
Lowest voltage (minimum peak) incl. all ripple and drops >7.6V including voltage drop, ripple and spikes,
measured at western jack (6-pole) pin (1 to 6).
1
V
I
PLUS
2
2.
Typical values measured with antenna impedance = 50 Ohm (return loss >20dB).
Average supply current
(average time 3 min.)
Power Down
mode
@8V
480
µA
@12V
700
@30V
1750
SLEEP mode
(GSM/GPRS)
@8V
45
mA
@12V
30
@30V
17
Net searching
mode (no net)
@8V
70
mA
@12V
50
@30V
30
IDLE mode
(GSM/GPRS)
@8V
60
mA
@12V
45
@30V
25
GSM TALK mode @8V
270
mA
@12V
170
@30V
70
GPRS DATA
mode(1 Tx, 4 Rx)
@8V
290
mA
@12V
180
@30V
75
GPRS DATA
mode(2 Tx, 3 Rx)
@8V
370
mA
@12V
230
@30V
90
Peak supply current (during
577µs transmission slot every
4.6ms)
Power control
level for Pout max
@8V
1.7
A
@12V
1.2
@30V
0.7
t
PLUS-Fail
Allowed powerfail time without
terminal reset or power down
After this time the MC55i
Terminal will be reset or
switched off
1
ms
Allowed powerfail time without
RTC (real time clock) reset
After this time the RTC will
be reset
15
s
t
R_PLUS
Allowed rise time of V
PLUS
0% to 100%
20
ms
