FNW500R4 Datasheet, PDF (5/13 Pages) Lineage Power Corporation – 36 - 75 Vdc Input; 28Vdc Output; 500W Output

Data Sheet
September 8, 2008
FNW500R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 500W Output
Characteristic Curves
The following figures provide typical characteristics for the FNW500R (28V, 18A) at 25ºC. The figures are identical for
either positive or negative Remote On/Off logic.
93.0
91.0
89.0
Vin=36V
87.0
Vin=48V
85.0
Vin=75V
83.0
81.0
0
5
10
15
OUTPUT CURRENT, I_o (A)
Figure 1. Converter Efficiency versus Output
Current.
20
TIME, t (10ms/div)
Figure 4. Typical Start-Up Using Remote On/Off,
R1=30Kohm; C_o,ext = 470µF.
TIME, t (1μs/div)
Figure 2. Typical Output Ripple and Noise at Room
Temperature and 48Vin; I_o = I_o,max; C_o,ext = 470µF.
TIME, t (50ms/div)
Figure 5. Typical Start-Up Using from V_IN, positive
logic version shown; C_o,ext = 470µF.
TIME, t (1ms/div)
Figure 3. Transient Response to Dynamic Load
Change from 25% to 50% to 25% of Full Load at
Room Temperature and 48 Vdc Input; 0.1A/uS
TIME, t (1ms/div)
Figure 6. Transient Response to Dynamic Load
Change from 50% to 75% to 50% of Full Load at
Room Temperature and 48 Vdc Input; 0.1A/uS
5