Data Sheet
JHC/JHW350 Power Module; dc-dc Converter
March 26, 2008
18 – 36Vdc or 36 – 75Vdc Input; 28Vdc Output; 350W
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Device
Symbol
Min
Max
Unit
Input Voltage
JHC
JHW
JHC
JHW
VIN
VIN
-0.3
-0.3
-0.3
-0.3
40
80
Vdc
Vdc
Vdc
Vdc
Continuous
Transient (100ms)
VIN, trans
VIN, trans
50
Transient (100ms)
100
Operating Ambient Temperature
(See Thermal Considerations section)
Storage Temperature
I/O Isolation Voltage
All
Tc
-40
100
°C
All
All
Tstg
-55
125
°C
1500
Vdc
⎯
⎯
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Device
Symbol
Min
Typ
Max
Unit
Operating Input Voltage
JHC
JHW
JHC
JHW
All
VIN
VIN
18
36
24
48
36
75
23
11
2
Vdc
Vdc
Adc
Adc
A2s
Maximum Input Current
IIN,max
IIN,max
I2t
(VIN=0V to 36V, IO=IO, max)/(VIN=0V to 75V, IO=IO, max
)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12μH source impedance; VIN=0V to
75V, IO= IOmax ; see Figure 13)
All
All
7
15
mAp-p
dB
Input Ripple Rejection (120Hz)
60
Fusing Considerations
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to an
integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included,
however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies
require a fast-acting fuse with a maximum rating of 20A for JHW series and 30A for JHC series(see Safety
Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc
input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for
further information.
LINEAGE POWER.
2
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
