LW015C91 Lineage Power, LW015C91 Datasheet - Page 15

• Manufacturer Part Number: LW015C91
• Description: CONVERTER DC/DC 15V 15W OUT
• Manufacturer: Lineage Power
• Series: LW015r
• Type: Isolated with UVLOr

Specifications of LW015C91

• Output: 15V
• Number Of Outputs: 1
• Power (watts): 15W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 6-DIP Module
• 1st Output: 15 VDC @ 1A
• Size / Dimension: 2.00" L x 1.00" W x 0.40" H (50.8mm x 25.4mm x 10.2mm)
• Power (watts) - Rated: 15W
• Operating Temperature: -40°C ~ 105°C
• Efficiency: 78%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

March 27, 2008
Design Considerations
Input Source Impedance
The power module should be connected to a low
ac-impedance input source. Highly inductive source
impedances can affect the stability of the power mod-
ule. If the source inductance exceeds 4 µH, a 33 µF
electrolytic capacitor (ESR < 0.7 Ω at 100 kHz)
mounted close to the power module helps ensure
stability of the unit.
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., UL 1950, CSA 22.2 No. 950-95, EN60950, and
IEC950.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), one of
the following must be true of the dc input:
n
n
n
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 5 A normal-blow fuse in the ungrounded lead.
Feature Descriptions
Output Overvoltage Clamp
The output overvoltage clamp consists of control cir-
cuitry, independent of the primary regulation loop, that
monitors the voltage on the output terminals. This con-
trol loop has a higher voltage set point than the primary
loop (see Feature Specifications table). In a fault condi-
tion, the overvoltage clamp ensures that the output
voltage does not exceed V
redundant voltage-control that reduces the risk of
output overvoltage.
Lineage Power
All inputs are SELV and floating, with the output also
floating.
All inputs are SELV and grounded, with the output
also grounded.
Any non-SELV input must be provided with rein-
forced insulation from any other hazardous voltages,
including the ac mains, and must have a SELV reli-
ability test performed on it in combination with the
converters.
O, clamp, max
18 Vdc to 36 Vdc or 36 Vdc to 75 Vdc Inputs, 10 W and 15 W
. This provides a
Current Limit
To provide protection in a fault (output overload) condi-
tion, the unit is equipped with internal current-limiting
circuitry and can endure current limiting for an unlim-
ited duration. At the point of current-limit inception, the
unit shifts from voltage control to current control. If the
output voltage is pulled very low during a severe fault,
the current-limit circuit can exhibit either foldback or
tailout characteristics (output-current decrease or
increase). The unit operates normally once the output
current is brought back into its specified range.
Remote On/Off (Optional)
Two remote on/off options are available. Positive logic,
device code suffix “4”, remote on/off turns the module
on during a logic-high voltage on the remote ON/OFF
pin, and off during a logic low. Negative logic, device
code suffix “1”, remote on/off turns the module off dur-
ing a logic high and on during a logic low.
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 may be an open collector or equivalent (see
Figure 38). 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 10 V. The maximum allowable
leakage current of the switch at V
The module has internal capacitance to reduce noise
at the ON/OFF pin. Additional capacitance is not gen-
erally needed and may degrade the start-up character-
istics of the module.
Figure 38. Remote On/Off Implementation
on/off
during a logic low is 1 mA. The switch
V
I
on/off
on/off
+
-
I
(–) terminal (V
on/off
V
V
REMOTE
ON/OFF
I
I
(+)
(-)
= –0.7 V to +1.2 V. The
on/off
on/off
= 10 V is 50 µA.
on/off
generated by
). The
8-758(C).a
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