GS5AC-40
ISDN AC-DC CONVERTER
PRELIMINARY DATA
Type
GS5AC-40
V
i
180 to 264 V
V
o
I
o
out 1: 40 V 110 mA
out 2: 40 V
10 mA
FEATURES
Large Input voltage range: 180 to 264 V
RMS
Input filter to meet EMI requirements
Peak input overvoltage whitstanding
Input fuse
Input to output insulation
2 insulated outputs:
Vo1 = 35 to 42 V for ”S” interface
Vo2 = 36 to 47 V for external relay and LED driver
”S” interface output characteristics:
Peak output of 8 W 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: 250 V for 10/700
µs
Mechanical dimensions (LxWxH): 80x43x30 mm
DESCRIPTION
The GS5AC-40 converter has been designed for
an ISDN-NTBA (Network Termination Basic Ac-
cess) system with either 4B3T or 2B1Q standard
trasmission.
The converter is able to deliver 40V/110 mA for ”S”
interface and is equipped also with a second, aux-
iliary 40V/10 mA output for relay and LED driving.
The converter offers short-circuit protection on both
outputs (short-circuit on 40V output doesn’t affect
relay/LED output and the input power never ex-
ceeds the limit of 15 W) and also provides to
remove the auxiliary (relay & LED) output when the
mains is missing, thus allowing the use of a second
”emergency” voltage source (relay contacts are
released). 3000 V
RMS
insulation voltage for 60
seconds is provided between input and the outputs.
Output 1 and Output 2 share the same common
ground (pin 4 is internally connected with pin 6).
The design of the module has been conducted
using, as reference standards, the following:
EN 60950, VDE0878 part 1 class B (EMC),
EN55022 class B (EMC), CCITT 430, ETS 300 012
and ETS 300 047 (ISDN BASIC ACCESS, Safety
and Protection); anyway, please note that no certi-
fication processes have been carried out on the
module itself.
20 January 1997
1/4
GS5AC-40
ELECTRICAL CHARACTERISTICS
(T
amb
= 25°C unless otherwise specified)
Std. Conditions:
Vin = 180 to 264 V
RMS
Po1 = 0 to 4.5 W Io2 = 0 to 10 mA
Parameter
Input Voltage
Input Frequency
Input Power
Input Power
Start up Input Voltage
Output Voltage 1
Output Voltage 2
Output Voltage 2
Output Ripple Voltage 1
Output Current 1
Output Overcurrent
Output 1 short circuit current
Output current 2
Power Fail Vo1 threshold
Power Fail Vi threshold
Input Transient Overvoltage
Out 1 Transient Overvoltage
Insulation Voltage
Insulation Voltage (pulse)
Hold-up time
Mean Time Before Failure
Operating Ambient
Temperature Range
Storage
Temperature Range
Standard Conditions
Vo2 fails below 1 V
Output parameters as per
Standard Conditions
t = 10/700
µs
t = 10/700
µs
Input to outputs, t=60 s
Input to outputs,
t = 10/700
µs
(pulse)
Vin = 180 VRMS
Loads as per Std. Conditions
Ground Fixed, MIL-HDBK-217E
2.5
250
3000
4
20
1
-5
- 40
+70
+85
Vi = 230 VRMS
Standard Conditions
Abnormal Conditions
Output parameters as per
Standard Conditions
Standard Conditions
Standard Conditions
Emergency Conditions
Standard Conditions
B W: 0 - 20 MHz
Standard Conditions
t = 150 ms, Vo1 = 35.5 to 42 V
at Switch-On
0
180
10
0
35.5
150
50
100
36
36
0
38
38
Vo2 = 36 to 47 V
Min
180
43
7
15
150
42
47
1
100
110
250
80
10
36.5
180
Typ
Max
264
56
Unit
VRMS
Hz
W
W
VRMS
V
V
V
mVRMS
mA
mA
mA
mA
V
VRMS
kV
V
VRMS
kV
ms
Mhours
°C
°C
Symbol
Vi
fi
Pi
Pi
Vist
Vo1
Vo2
Vo2
Vor1
Io1
Ioo1
Io1sc
Io2
Vo1pf
Vipf
Vipk
Vo1pk
Vis
Vis
th
MTBF
Top
Tstg
Test Conditions
2/4
20 January 1997
GS5AC-40
Figure 2.
Typical application example
3
1
GS5AC-40
40 V
+
-
4
5
1
Led
2
+
Relay/Led
Mains
input
GS1T70-D540/2
5
6
3
AC/DC converter
-
6
2
+
40 V
-
Relay
DC/DC converter
+
5V
-
4
So
Uo
”S”
interf.
”U”
interf.
NT1 board
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specification mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectronics.
©
1997 SGS-THOMSON Microelectronics – All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - China - Canada - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands -
Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
4/4
20 January 1997
Analog electronics
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