Data Sheet
JNW350R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 350W Output
July 27, 2009
Electrical Specifications (continued)
Parameter
Device
Symbol
Min
Typ
Max
Unit
Output Voltage Set-point
(VIN=VIN,nom, IO=IO, max, Tc =25°C)
All
VO, set
27.5
28
28.5
Vdc
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
All
VO
27.15
28.85
Vdc
⎯
Output Regulation
Line (VIN=VIN, min to VIN, max
)
All
All
All
0.1
0.1
0.2
0.2
0.5
%Vo,set
%Vo,set
%Vo,set
⎯
⎯
⎯
Load (IO=IO, min to IO, max
)
Temperature (Tc = -40ºC to +100ºC)
0.25
Output Ripple and Noise on nominal output
(VIN=VIN, nom and IO=IO, min to IO, max
)
RMS (5Hz to 20MHz bandwidth)
All
All
45
80
55
mVrms
⎯
⎯
Peak-to-Peak (5Hz to 20MHz bandwidth)
200
mVpk-pk
External Capacitance (ESR > 50 mΩ)1
All, except
CO
440
6500
μF
-T
-T
Without the Tunable Loop™ (ESRMAX = 80mΩ)1
With the Tunable Loop™ (ESR > 50 mΩ)2
CO
CO
440
440
470
μF
μF
-T
All
All
All
8,000
Output Current
Io
1.0
12.5
17.5
30
Adc
Adc
Output Current Limit Inception
Output Short Circuit Current (VO≤ 0.25Vdc)
IO, lim
IO, sc
13.1
⎯
Arms
Efficiency
All
η
92
%
⎯
⎯
⎯
⎯
VIN=VIN, nom, Tc=25°C IO=IO, max , VO= VO,set
Switching Frequency
fsw
300
kHz
Dynamic Load Response
(ΔIo/Δt=1A/10μs; Vin=Vin,nom; Tc=25°C;
Tested with a 470 μF aluminum and a 10 µF
ceramic capacitor across the load.)
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
All
⎯
⎯
⎯
⎯
Vpk
ts
2
1.5
%VO, set
ms
Settling Time (Vo<10% peak deviation)
Load Change from Io= 25% to 50% of Io,max:
Peak Deviation
⎯
⎯
⎯
⎯
Vpk
ts
2
1.5
%VO, set
ms
Settling Time (Vo<10% peak deviation)
1 Note: use a minimum 2 x 220uF output capacitor. Recommended capacitor is Nichicon CD series, 220uF/35V. If the ambient
temperature is less than 0°C, use 3x of the minimum CO.
2 External capacitors may require using the new Tunable Loop™ feature to ensure that the module is stable as well as getting the
best transient response. See the Tunable Loop™ section for details.
Isolation Specifications
Parameter
Symbol
Ciso
Min
⎯
Typ
15000
⎯
Max
⎯
Unit
pF
Isolation Capacitance
Isolation Resistance
Riso
10
Mꢀ
⎯
General Specifications
Parameter
Device
Symbol
Min
Typ
Max
Unit
109/Hours
Calculated Reliability based upon Telcordia SR-
FIT
379
All
332 Issue 2: Method I Case 3 (IO=80%IO, max
,
TA=40°C, airflow = 200 lfm, 90% confidence)
MTBF
2,638,332
Hours
78
g
⎯
⎯
Weight
All
2.8
oz.
LINEAGE POWER
3
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
