Data Sheet
JHC/JHW350 Power Module; dc-dc Converter
March 26, 2008
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Characteristic Curves
The following figures provide typical characteristics for the JHW350R (28V, 12.5A) at 25°C. The figures are identical
for either positive or negative Remote On/Off logic.
12
10
Io = 12.5A
8
6
Io = 6.5A
4
2
Io = 0A
0
25
35
45
55
65
75
INPUT VOLTAGE, VO (V)
TIME, t (10 ms/div)
Figure 1. Typical Input Characteristic at Room
Temperature.
Figure 4. Typical Start-Up Using Remote On/Off,
negative logic, Co,ext = 330µF.
96
94
92
90
88
86
84
82
80
78
Vi = 36V
Vi = 48V
Vi = 75V
76
74
72
70
0
1
2
3
4
5
6
7
8
9
10 11 12 13
OUTPUT CURRENT, IO (A)
TIME, t (200 μs /div)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature.
Figure 5. Typical Transient Response to Step
Decrease in Load from 50% to 25% of
Full Load at Room Temperature and 52
Vdc Input; Co,ext = 330µF.
75 Vin
48 Vin
36 Vin
TIME, t (1μs/div)
TIME, t (200μs /div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature, Io = Io,max, Co,ext = Co,min = 330µF.
Figure 6. Typical Transient Response to Step Increase
in Load from 50% to 75% of Full Load at Room
Temperature and 52 Vdc Input; Co,ext = 330µF.
LINEAGE POWER.
6
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
