COMBI/F3
POWER MANAGEMENT MODULE FOR ISDN NT1
REV. 01
Type
V
i
195 to 253
V
ac
and 28 to
115 V
dc
V
o
out 1:3.3V
out 2:40V
I
o
100 mA
120 mA
COMBI/F3
FEATURE
s
Uko INTERFACE (DC) and MAINS (AC) inputs
to enable NPM (Normal Power Mode) and RPM
(Restricted Power Mode) CONDITIONS
s
INPUT FILTER TO MEET EMI requirements
s
PEAK INPUT OVERVOLTAGE
WITHSTANDING
s
AC INPUT PROTECTION FUSE
s
INPUTS TO OUTPUTS INSULATION
s
2 INSULATED OUTPUTS:
V
o1
=3.3 V for NT1 logics
s
ORDERING NUMBER: GS-COMBI/F3-3.3
DESCRIPTION
The NT1 Power Management Module COMBI/F3 is a
comprehensive solution for ISDN-NT1 (Network Ter-
mination Basic Access NTBA) equipment, combining
both AC-DC and DC-DC functions.
The GS-COMBI/F3 provide the NTBA with all neces-
sary supply voltages as well as control signals to op-
erate in the different operating modes, typically the
Normal Power Mode (NPM) and Restricted Power
Mode (RPM).
Connected to the main, Input 1 (2 poles AC connec-
tor) is the AC input power to the COMBI/F3, source
of the whole necessary power in normal operating
mode, namely in NPM. Input 2 is the DC power
source when in RPM, therefore to connect to the U-
INTERFACE.
The device supply 3.3V (out 1) for logics and 40V (out
2) for the S interface both in Normal Power Mode
(NPM) and in Restricted Power Mode (RPM).
RPM mode is the emergency condition that occurs if
the mains (AC) input is not available. An internal 鈥渞e-
lay function鈥?is available to reverse the 40 V output
polarity. A third auxiliary output can be used for LEDs
driving and RPM/NPM mode acknowledge (Logic
output), referred to 3.3 V output and a fourth auxiliary
output can be used for LEDs driving and RPM/NPM
1/7
V
o2
=40 V for 鈥淪鈥?interface
AUXILIARY LOGIC OUTPUT TTL-
COMPATTIBLE for LED & NPM/RPM MODE
indication, share the same ground of V
o1
AUXILIARY LOGIC OUTPUT TTL-
COMPATTIBLE for LED & NPM/RPM MODE
indication, share the same ground of V
o2
INTERNAL RELAY FUNCTION FOR V
o2
POLARITY REVERSE
鈥淪鈥?INTERFACE OUTPUT
CHARACTERISTICS:
- Peak output of 220 mA for 150 ms
- Typical output power 4,5 W
- Output filtering to meet ETSI requirements
- Hold up time: 20 ms with 4,5 W output power
- Continuous short circuit protection
- Peak overvoltage withstand: 1KV for 10/700 us
transversal
U-INTERFACE ACCORDING TO ETR080
S-INTERFACE ACCORDING TO ETS 300 012
MTBF: 300 Kh, according to MIL HDBK 217-F
Operating Temperature: -10 to +70
o
C
s
s
s
s
s
s
s
October 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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