Data Sheet
September 8, 2008
FNW500R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 500W Output
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Input Voltage (Continuous)
Operating Ambient Temperature
Note: When the operating ambient temperature is within
55C~85C, the application of the module refers to the
derating curves of Figure 16.
Operating Case Temperature
(See Thermal Considerations section)
Storage Temperature
I/O Isolation Voltage ,Input to case
Output to case
Device
All
All
Symbol
V
IN
Ta
Min
-0.3
-40
Max
80
85
Unit
Vdc
°C
All
All
All
All
Tc
T
stg
⎯
⎯
-40
-55
⎯
⎯
100
125
1500
500
°C
°C
Vdc
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
=36V to 75V, I
O
=I
O, max
)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; V
IN
=0V to
75V, I
O
= I
Omax
; see Figure 10)
Input Ripple Rejection (120Hz)
All
All
All
All
50
I
IN,max
It
2
Device
All
Symbol
V
IN
Min
36
Typ
48
Max
75
Unit
Vdc
18
2
40
Adc
As
mAp-p
dB
2
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being
an integrated part of complex power architecture. To preserve maximum flexibility, internal fusing is not included.
Always use an input line fuse, to achieve maximum safety and system protection. The safety agencies require a
time-delay or fast-acting fuse with a maximum rating of 30 A (see Safety Considerations section). Based on the
information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a
lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information.
LINEAGE
POWER
2
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
