GS5AC-40

ISDN AC-DC CONVERTER

20 January 1997

1/4

PRELIMINARY DATA

Type

GS5AC-40

180 to 264 V

out 1: 40 V 110 mA

out 2: 40 V

10 mA

FEATURES

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

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.