JC075B1 Lineage Power, JC075B1 Datasheet - Page 8

• Manufacturer Part Number: JC075B1
• Description: CONVERTER DC/DC 12V 75W OUT
• Manufacturer: Lineage Power
• Series: JC075r
• Type: Isolated with Remote On/Offr

Specifications of JC075B1

• Output: 12V
• Number Of Outputs: 1
• Power (watts): 75W
• Mounting Type: Through Hole
• Voltage - Input: 18 ~ 36V
• Package / Case: 9-DIP Module
• 1st Output: 12 VDC @ 6.3A
• Size / Dimension: 2.40" L x 2.28" W x 0.52" H (61mm x 57.9mm x 13.2mm)
• Power (watts) - Rated: 75W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 85%
• Approvals: CSA, UL, VDE
• Product: Isolated
• Output Power: 84 W
• Input Voltage Range: 18 V to 36 V
• Input Voltage (nominal): 28 V
• Output Voltage (channel 1): 12 V
• Output Current (channel 1): 7 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: DIP
• Output Type: Isolated
• Output Voltage: 12 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: No

18 Vdc to 36 Vdc Input, 12 Vdc Output; 50 W to 100 W
8 8
Test Configurations
Note: All measurements are taken at the module terminals. When
Figure 13. Output Voltage and Efficiency
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. For the test configuration in Figure 11, a 33 µF
electrolytic capacitor (ESR < 0.7 Ω at 100 kHz)
mounted close to the power module helps ensure sta-
bility of the unit. For other highly inductive source
impedances, consult the factory for further application
guidelines.
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 22.2-950, and EN60950.
For the converter output to be considered meeting the
requirements of safety extra-low voltage (SELV), the
input must meet SELV requirements.
If the input meets extra-low voltage (ELV) require-
ments, then the converter’s output is considered ELV.
The input to these units is to be provided with a maxi-
mum 20 A normal-blow fuse in the ungrounded lead.
SUPPLY
RESISTANCE
socketing, place Kelvin connections at module terminals to
avoid measurement errors due to socket contact resistance.
CONTACT
Measurement Test Setup
I
η
I
=
⎛
⎝
[Vo(+) – Vo(-)]Io
------------------------------------------ -
[Vi(+) – Vi(-)]Ii
V
V
I
I
(+)
(
–
)
SENSE(+)
SENSE(
(continued)
V
V
O
O
(
(+)
–
–
)
)
⎞
⎠
DISTRIBUTION LOSSES
×
I
O
100
CONTACT AND
LOAD
8-749 (C)
Electrical Descriptions
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 tai-
lout characteristics (output current decrease or
increase). The unit operates normally once the output
current is brought back into its specified range.
Feature Descriptions
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 (code suffix “1”) is the factory-preferred configura-
tion.
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 14). A logic low is V
imum 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 fol-
lowing:
n
n
For negative logic, short ON/OFF pin to V
For positive logic, leave ON/OFF pin open.
on/off
during a logic low is 1 mA. The switch
I
(-) terminal (V
on/off
= 0 V to 1.2 V. The max-
Lineage Power
March 2008
on/off
on/off
= 15 V is 50 μA.
on/off
generated by
). The
I
(-)