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MCD10074 Rev. 1.2, 15-Apr-10
Page 7 of 17
www.power-one.com
FNP1500/1800 Front-Ends
& FNR-3 Power Shelf Data Sheet
Output Connector Pinning and Signal Specification
Output Connector
Description
Pin
Location
Type
Low level
High level
V max
I max
Overtemperature /
Fan Fail
U1
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
15 V
20 mA
AC Fail /
Power down warning
U2
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
15 V
20 mA
Power Supply Present
U3
Resistor (1 k) connected to logic GND
Open
Pull up
10 V
10 mA
DC Fail /
Output voltage fault
U4
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
15 V
20 mA
Internal ground
U5
Internal ground (Vo1– line before the output filter).
Do not connect the internal grounds in
systems with several units.
ADDR0, I
2C address
bus
T1
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k).
Switch closed
Switch open
5V
ADDR1, I
2C address
bus
T2
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k).
Switch closed
Switch open
5V
ADDR2, I
2C address
bus
T3
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k).
Switch closed
Switch open
5V
ADDR3, I
2C address
bus
T4
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k).
Switch closed
Switch open
5V
ADDR4, I
2C address
bus
T5
DIP switch or wire to internal ground,
Internally pull up to 5V (10 k).
Switch closed
Switch open
5V
DATA, I
2C data line
S1
I
2C compatible signal
referenced to logic GND
5 V or 3.3 V logic
CLOCK, I
2C clock line
S2
I
2C compatible signal
referenced to logic GND
5 V or 3.3 V logic
Vo2 + output
S3
Auxiliary power pin, insulated from main output
Vo2 – output
S4
Auxiliary ground pin, insulated from main output
Logic ground
S5
Internally connected over 10 to Auxiliary GND. Wire
separately form Auxiliary - and main output GND to
minimize noise on signals and I
2C.
Leave open if not used.
Output inhibit
R1
PS active when pulled low (DC-DC stage off when left
open) Referenced to logic GND
< 0.8 V
> 2.0 V
10 V
3.5 mA
V sense +
R2
Open or connected to Vo1+ at the load
(Internally connected to Vo1+ over 100 )
dU < 3 Vpp
30 mA
V sense -
R3
Open or connected to Vo1- at the load
(Internally connected to Vo1- over 100 )
dU < 3 Vpp
30 mA
12V
models
Output margin
48V
models
R4
Open or connected over resistor to internal ground.
Do not connect the margin pins in
systems with several units.
3 VDC
R4
Open or connected to internal ground
(+8 % Vo1) or V sense+ (-8 % Vo1)
Do not connect the margin pins in
systems with several units.
60 VDC
12V
models
Synch. startup
48V
models
R5
Open or connected to synch startup circuit,
referenced to Vo1 - at the output connector
12V
3mA
R5
Open or connected to synch startup circuit,
referenced to Vo1 - at the output connector
12V
2mA
Vo1 + output
12V
models
P2, P4, P6, P8,
P10, P12
Main output + pins
Vo1 – output
12V
models
P1, P3, P5,
P7, P9, P11
Main output – pins
Vo1 + output
48V
models
P2, P4, P6
Main output + pins
Vo1 – output
48V
models
P1, P3, P5
Main output – pins