PEB 2023
PEF 2023
1.5
System Integration
Figure 2 shows an example out of the wide application field of the PEB/F 2023. In
network termination applications, the PEB/F 2023 supplies the internal IC’s directly from
the U–interface. If the local main supply of the NT is out of order, then the PEB/F 2023
will also supplies the S-interface (restricted power mode).
In the subscriber terminal the PEB/F 2023 is used for feeding the internal circuits.
The PEB/F 2023 accommodates both galvanically isolated and non-isolated
configurations. Considering the diversity of DC/DC-converter applications, this part of
the specification only shows how to use the special ISDN-features of the PEB/F 2023.
6
S
Transceiver
U
Transceiver
8
Current
Limiter
Current
Limiter
5V
40VRPM
40VNPM
reverse Polarity
DC/DC
Converter
PEB 2023
PEF 2023
AC/DC
Converter
Figure 2 PEB/F 2023 in ISDN-Concept
$& 9
Data Sheet
9
04.99