Data Sheet
July 27, 2009
JNW350R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 350W Output
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN,nom
, I
O
=I
O, max
, T
c
=25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Output Regulation
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
c
= -40ºC to +100ºC)
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
(ESR > 50 mΩ)
1
Device
All
Symbol
V
O, set
Min
27.5
Typ
28
Max
28.5
Unit
V
dc
All
V
O
27.15
⎯
28.85
V
dc
All
All
All
⎯
⎯
⎯
0.1
0.1
0.25
0.2
0.2
0.5
%V
o,set
%V
o,set
%V
o,set
All
All
All, except
-T
-T
-T
All
All
All
All
C
O
C
O
C
O
I
o
I
O, lim
I
O, sc
η
f
sw
⎯
⎯
440
440
440
1.0
13.1
45
80
55
200
6500
470
8,000
12.5
mV
rms
mV
pk-pk
μF
μF
μF
A
dc
A
dc
A
rms
%
kHz
Without the Tunable Loop™
(ESR
MAX
= 80mΩ)
1
With the Tunable Loop™
(ESR > 50 mΩ)
2
Output Current
Output Current Limit Inception
Output Short Circuit Current (V
O
≤
0.25V
dc
)
Efficiency
V
IN
=V
IN, nom
, T
c
=25°C I
O
=I
O, max ,
V
O
= V
O,set
Switching Frequency
Dynamic Load Response
⎯
17.5
30
⎯
⎯
92
300
⎯
⎯
(ΔIo/Δt=1A/10μs; V
in
=V
in
,nom; T
c
=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
⎯
⎯
V
pk
2
%V
O, set
Settling Time (Vo<10% peak deviation)
ms
t
s
⎯
1.5
⎯
Load Change from Io= 25% to 50% of Io,max:
⎯
⎯
V
pk
2
%V
O, set
Peak Deviation
t
s
ms
⎯
1.5
⎯
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 C
O
.
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.
2
Isolation Specifications
Parameter
Isolation Capacitance
Isolation Resistance
Symbol
C
iso
R
iso
Min
⎯
10
Typ
15000
⎯
Max
⎯
⎯
Unit
pF
MΩ
General Specifications
Parameter
Calculated Reliability based upon Telcordia SR-
332 Issue 2: Method
I
Case 3 (I
O
=80%I
O, max
,
T
A
=40°C, airflow = 200 lfm, 90% confidence)
Weight
Device
All
MTBF
All
⎯
2,638,332
78
2.8
⎯
Hours
g
oz.
Symbol
FIT
Min
Typ
379
Max
Unit
10 /Hours
9
LINEAGE
POWER
3
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
