PF-A Datasheet, PDF (9/14 Pages) –

PF-A SERIES
A. Basic Connection
Parallel operation is used when there is not enough current to
supply the load being used with one model, or when improv-
ing the reliability of the power supply by reducing the output
power. However, if one model goes down, the output will be
shut down. The basic connection is shown below.
●Basic Parallel Operation
'
' ^-
$
7JOÊ¢-Ê£
Ê´7
1'ʗ1'"
4FSJFT
7JOÊ¢/Ê£
3
ʵ7
#BTFQMBUF
4(
&/"
1$
*0(
"69
3 $ Ê´
$ $
$
' ^-
$
7JOÊ¢-Ê£
Ê´7
1'ʗ1'"
4FSJFT
7JOÊ¢/Ê£
3
ʵ7
#BTFQMBUF
4(
&/"
1$
*0(
"69
3 $ Ê´
$ $
$
- _{' %}
Ê´
$
- _{' %}
1)
4FSJFT
Ê´7JO
ʵ7JO
$/5
4(
Please refer to the connection between ENA and ON/
OFF control of PH series on page B-257.
PF-A
B. Parallel Redundant Operation
In power supply systems demanding high reliability, N+1 mod-
ules can be used for the N module power supply, increasing
the reliability of the system. In normal operation, the output
power of each module will be lower, also raising the reliability
of the system.
●N+1 Parallel Redundant Operation
'
' ^-
7JOÊ¢-Ê£
Ê´7
$
1'ʗ1'"
4FSJFT
7JOÊ¢/Ê£
3
ʵ7
#BTFQMBUF
4(
&/"
1$
*0(
"69
3 $ Ê´
$ $
$
' ^-
$
7JOÊ¢-Ê£
Ê´7
1'ʗ1'"
4FSJFT
7JOÊ¢/Ê£
3
ʵ7
#BTFQMBUF
4(
&/"O
1$
*0(O
"69O
3 $ Ê´
$ $
$
・All specifications are subject to change without notice.
If one module goes down within the N+1 modules, the remaining
N modules can still supply the load current and protection from the
system going down is accomplished. However, a bridge diode and
input fuse (standard DC) is required. When selecting the bridge
diode as well as input fuse, please consider not only the time in
standard operation, but also the inrush withstand current. The ba-
sic connection is shown below.
- _{' %}
Ê´
$
- _{' %}
1)
4FSJFT
Ê´7JO
ʵ7JO
$/5
4(
Please refer to the connection between ENA and ON/
OFF control of PH series on page B-257.
B-269