JAHW075F1 Lineage Power, JAHW075F1 Datasheet - Page 10

• Manufacturer Part Number: JAHW075F1
• Description: CONVERTER DC/DC 3.3V 50W OUT
• Manufacturer: Lineage Power
• Series: JAHWr
• Type: Isolated with Remote On/Offr

Specifications of JAHW075F1

• Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 9-DIP Module
• 1st Output: 3.3 VDC @ 15A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 88.6%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

dc-dc Converters; 36 to 75 Vdc Input, 3.3 Output; 33 W to 66 W
Safety Considerations
For safety-agency approval of the system in which the
power module is used, the power module must be
installed in compliance with the spacing and separation
requirements of the end-use safety agency standard,
i.e., UL60950, CSA C22.2 No. 60950-00, and VDE
0805 (IEC60950, IEC950).
If the input source is non-SELV (ELV or a hazardous
voltage greater than 60 Vdc and less than or equal to
75 Vdc), for the module’s output to be considered
meeting the requirements of safety extra-low voltage
(SELV), all of the following must be true:
n
n
n
n
Note: Do not ground either of the input pins of the
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
The input to these units is to be provided with a maxi-
mum 6 A normal-blow fuse in the ungrounded lead.
Feature Descriptions
Overcurrent Protection
To provide protection in an output overload condition,
the unit is provided with internal shutdown and auto-
restart mechanism.
At the instance of current-limit inception, the module
enters a "hiccup" mode of operation whereby it shuts
down and automatically attempts to restart. As long as
the fault persists, the module remains in this mode.
The protection mechanism is such that the unit can
continue in this condition for a sufficient interval of time
until the fault is cleared.
A latch-off option is also available.
10
10
The input source is to be provided with reinforced
insulation from any hazardous voltages, including the
ac mains.
One V
both the input and output pins are to be kept floating.
The input pins of the module are not operator acces-
sible.
Another SELV reliability test is conducted on the
whole system, as required by the safety agencies, on
the combination of supply source and the subject
module to verify that under a single fault, hazardous
voltages do not appear at the module’s output.
module without grounding one of the output pins.
This may allow a non-SELV voltage to appear
between the output pin and ground.
I
pin and one V
O
pin are to be grounded, or
Remote On/Off
Two remote on/off options are available. Positive logic
remote on/off turns the module on during a logic-high
voltage on the ON/OFF pin, and off during a logic low.
Negative logic remote on/off turns the module off dur-
ing a logic high and on during a logic low. Negative
logic, device code suffix “1,” is the factory-preferred
configuration.
To turn the power module on and off, the user must
supply a switch to control the voltage between the
on/off terminal and the V
switch can be an open collector or equivalent (see
Figure 19). A logic low is V
maximum I
should maintain a logic-low voltage while sinking 1 mA.
During a logic high, the maximum V
the power module is 15 V. The maximum allowable
leakage current of the switch at V
If not using the remote on/off feature, do one of the
following to turn the unit on:
n
n
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the out-
put voltage sense range given in the Feature Specifica-
tions table, i.e.:
For negative logic, short ON/OFF pin to V
For positive logic, leave ON/OFF pin open.
[V
Figure 19. Remote On/Off Implementation
O
(+) – V
V
I
on/off
on/off
+
on/off
–
O
(–)] – [SENSE(+) – SENSE(–)] ≤ 0.5 V
during a logic low is 1 mA. The switch
ON/OFF
V
V
I
I
(+)
(–)
I
(–) terminal (V
on/off
SENSE(+)
SENSE(–)
= 0 V to 1.2 V. The
on/off
V
V
O
O
on/off
(+)
(–)
= 15 V is 50 µA.
on/off
Lineage Power
generated by
I
April 2008
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