Data Sheet
March 26, 2008
JHC/JHW350 Power Module; dc-dc Converter
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=V
IN,nom
, I
O
=I
O, max
, T
c
=25°C)
Device
R
Symbol
V
O, set
Min
27.5
Typ
28
Max
28.5
Unit
V
dc
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
= -40°C to +100°C)
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max,
C
O
=C
O,min
)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
(type electrolytic)
Output Current
Output Current Limit Inception
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
(ΔIo/Δt=1A/10μs; V
in
=V
in
,nom; T
c
=25°C; Tested
with a 330
μF
aluminum and a 1.0
μF
tantalum
capacitor across the load.)
Load Change from Io= 50% to 75% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
Load Change from Io= 75% to 50% of Io,max:
Peak Deviation
Settling Time (Vo<10% peak deviation)
R
V
O
27.16
⎯
28.84
V
dc
All
All
All
⎯
⎯
⎯
0.02
0.05
100
0.1
0.2
300
%Vo
%Vo
mV
All
All
All
R
R
C
O, max
I
o
I
O, lim
⎯
⎯
1000
0
⎯
27
45
⎯
40
150
3600
12.5
mV
rms
mV
pk-pk
μF
Adc
Adc
13.5
92.5
93.5
⎯
JHC350R
JHW350R
η
η
f
sw
⎯
⎯
%
%
All
⎯
350
⎯
kHz
All
All
All
All
V
pk
t
s
V
pk
t
s
⎯
__
__
⎯
2
500
2
500
⎯
__
__
⎯
%V
O, set
μs
%V
O, set
μs
LINEAGE
POWER
3
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
