![](http://datasheet.mmic.net.cn/280000/FXP1500_datasheet_16056300/FXP1500_7.png)
DEC 12, 2006 revised to FEB 22, 2007
Page 7 of 15
www.power-one.com
FNP1500/1800 and FXP1500/1800 Front-Ends
& FNR-3 and FXR-3 Power Shelves Data Sheet
Output Connector Pinning and Signal Specification (12V Models)
Output
Connector
Description
Overtemperature /
Fan Fail
AC Fail /
Power down warning
Power Supply
Present
DC Fail /
Output voltage fault
Pin
Location
Type
Low level
High level
U max
I max
U1
OC-output, protected by 16 V Zener diode and a
10
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode and a
10
resistor in series, referenced to logic GND
< 0.4 V @ 20 mA
Pull up
< 0.4 V @ 20 mA
Pull up
Open
Pull up
< 0.4 V @ 20 mA
Pull up
-
15 V
20 mA
15 V
20 mA
10 V
10 mA
15 V
20 mA
-
U2
U3
Resistor (1 k
) connected to logic GND
U4
OC-output, protected by 16 V Zener diode and a
10
resistor in series, referenced to logic GND
Internal ground (V
o1
– line before the output filter).
Do not connect the internal grounds in
systems with several units.
Internal ground
U5
ADDR0, I
2
C address
bus
ADDR1, I
2
C address
bus
ADDR2, I
2
C address
bus
ADDR3, I
2
C address
bus
ADDR4, I
2
C address
bus
T1
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k
).
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k
).
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k
).
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k
).
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k
).
Switch closed
Switch open
Switch closed
Switch open
Switch closed
Switch open
Switch closed
Switch open
Switch closed
Switch open
5V
-
5V
-
5V
-
5V
-
5V
-
T2
T3
T4
T5
DATA, I
2
C data line
S1
I
2
C compatible signal
referenced to logic GND
I
2
C compatible signal
referenced to logic GND
Auxiliary power pin, insulated from main output
5 V or 3.3 V logic
-
CLOCK, I
2
C clock
line
V
o2
+ output
S2
5 V or 3.3 V logic
-
S3
-
-
V
o2
– output
S4
Auxiliary ground pin, insulated from main output
Internally connected over 10
to Auxiliary GND.
Wire separately form Auxiliary - and main output
GND to minimize noise on signals and I
C.
Leave open if not used.
-
-
Logic ground
S5
-
-
Output inhibit
R1
PS active when pulled low
(DC-DC stage off when left open)
Referenced to logic GND
Open or connected to
V
o1
+ at the load
(Internally connected to
V
o1
+ over 100
)
Open or connected to
V
o1
- at the load
(Internally connected to
V
o1
- over 100
)
Open or connected over resistor to internal
ground. Do not connect the margin pins in
systems with several units.
Open or connected to synch startup circuit,
referenced to V
o1
- at the output connector
< 0.8 V
> 2.0 V
10 V
3.5 mA
V sense +
R2
dU < 3 V
pp
30 mA
dU < 3 V
pp
30 mA
3 VDC
-
V sense -
R3
Output margin
R4
-
-
Synch. Startup
R5
-
-
12V
3mA
V
o1
+ output
P2, P4, P6,
P8, P10, P12
P1, P3, P5,
P7, P9, P11
Main output + pins
-
-
V
o1
– output
Main output – pins
-
-