FNP1500/1800 Front-Ends
& FNR-3 Power Shelves Data Sheet
Features
RoHS compliant for all six substances
High density front-ends 15.2 to 18.3 W/in
3
Wide input voltage range 85 to 264 VAC
12 V standby voltage, 1A per front-end
Highly efficient topology reduces operating costs
I
2
C interface status and control
I
2
C voltage and current limit setting
Analog output voltage setting
Overtemperature, output overvoltage, and output
overcurrent protection
ORing circuits for true redundant operation:
V
o1
: ORing FETs; V
o2
: ORing Diodes
Status LEDs: AC OK, DC OK, and
Fan Fail/Overtemperature Fail
FNP1500/1800 front-ends have
front-mounted AC input receptacles.
Applications
Telecommunications
Data communications
Servers
Distributed power
FNR-3
Power Shelf
FNR-3 shelves provide up to 5400 watts in a 19" rack.
(See the Rack section for power shelf details.)
Description
The FNP1500/1800 front-ends are power-factor-corrected (PFC) which (depending on model type) provide a 12 VDC or 48 VDC
(1500 or 1800 watt) output, and can be used in hot-swap redundant systems. Their very small dimensions allow configuration of
up to three units in a 1U rack. The FNP front-ends have a front-mounted AC receptacle. The highly efficient thermal design with
internal-fan cooling permits their use over wide temperature ranges and provides very high reliability.
Status information is provided with front panel LEDs, logic signals, and via an I
2
C management interface. In addition, the I
2
C bus
can enable the power supply, set high fan speed, adjust the output voltage, and set the output current limit. The FNP1500/1800's
meet international safety standards and display the CE-Mark for the European Low Voltage Directive (LVD).
FNR-3-12G and FNR-3-48G power-shelf solutions provide rectification, system management, and power distribution, while
maintaining high reliability and offering flexibility for future expansion. The power shelves can be configured with up to three hot-
swappable 1500 or 1800-watt AC-DC front-ends.
MCD10074 Rev. 1.2, 15-Apr-10
Page 1 of 17
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