JQW Series Power Modules; dc-dc Converters
36 to 75 Vdc Input; Single Output up to 25A
Data Sheet
October 20, 2008
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
Input Voltage
Continuous
Transient (100ms)
Operating Ambient Temperature
(See Thermal Considerations section)
Storage Temperature
I/O Isolation Voltage
V
IN
V
IN, trans
T
A
T
stg
⎯
-0.3
-0.3
-40
-55
⎯
80
100
85
125
1500
Vdc
Vdc
°C
°C
Vdc
Symbol
Min
Max
Unit
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Input Over Voltage, turn-off threshold
Input Over Voltage, turn-on threshold
Maximum Input Current
(V
IN
=0V to 75V, I
O
=I
O, max
)
Quiescent Input Current, On/Off disabled (V
IN
= V
IN, NOM
)
Idle Input Current (V
IN
= V
IN, NOM
, I
O
= 0A)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 12µH source impedance; V
IN
=0V to
75V, I
O
= I
Omax
; see Figure 9)
Input Ripple Rejection (120Hz)
EMC, EN55022
I
IN, Q
I
IN, idle
It
2
Symbol
V
IN
V
OV/OFF
V
OV/ON
I
IN,max
Min
36
Typ
48
79
77
⎯
Max
75
Unit
Vdc
Vdc
Vdc
Adc
⎯
⎯
⎯
⎯
⎯
4.0
⎯
⎯
⎯
⎯
⎯
⎯
5
30
1.0
mA
mA
As
2
I
I
⎯
⎯
50
mAp-p
50
⎯
⎯
dB
See EMC Consideration Section
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 sophisticated power architectures. 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 8A (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.
2
LINEAGE
POWER.
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
