JNW350R631-18Z Lineage Power, JNW350R631-18Z Datasheet - Page 7

• Manufacturer Part Number: JNW350R631-18Z
• Description: DC/DC Converters & Regulators 36-75V 28Vout 12.5A Neg TH Pin 3.68mm
• Manufacturer: Lineage Power

Specifications of JNW350R631-18Z

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: CC109161931

Data Sheet
August 9, 2010
Safety Considerations (continued)
For all input sources, other than DC MAINS, where
the input voltage is between 60 and 75V dc
(Classified as TNV-2 in Europe), the following must
be meet, if the converter’s output is to be evaluated
for SELV:



All flammable materials used in the manufacturing of
these modules are rated 94V-0, or tested to the
UL60950 A.2 for reduced thickness.
The input to these units is to be provided with a
maximum 20 A fast-acting or time-delay fuse in the
unearthed lead.
Feature Description
Remote On/Off
Two remote on/off options are available. Positive logic
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, device code suffix “1”, turns the
module off during a logic high and on during a logic
low.
To turn the power module on and off, the user must
supply a switch (open collector or equivalent) to
control the voltage (V
terminal and the V
low is 0V ≤ V
logic low is 1mA, the switch should be maintain a
logic low level whilst sinking this current.
During a logic high, the typical maximum V
generated by the module is 5V, and the maximum
allowable leakage current at V
If not using the remote on/off feature:
For positive logic, leave the ON/OFF pin open.
For negative logic, short the ON/OFF pin to V
Over-Current Protection (OCP)
To provide protection in a fault output overload
LINEAGE
The input source is to be provided with reinforced
insulation from any hazardous voltage, including
the ac mains.
One Vi pin and one Vo pin are to be reliably
earthed, or both the input and output pins are to
be kept floating.
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.
POWER
on/off
≤ 1.2V. The maximum I
IN
(-) terminal (see Figure 10). Logic
on/off
) between the ON/OFF
on/off
= 5V is 50μA.
on/off
on/off
during a
IN
(-).
36 – 75 Vdc Input; 28Vdc Output; 350W Output
JNW350R Power Modules; DC-DC Converters
Figure 10. Circuit configuration for using Remote
On/Off Implementation.
condition, the module is equipped with internal current
limiting protection circuitry, and can endure over-
current transient overloads depending upon the
duration and amplitude of the overload. An internal
buffer measures the relative product of the duration
and amplitude of the overload and allows operation
until a limit threshold is reached. For lower amplitude
overloads, the module will operate without shutdown
for a longer transient overload. If the overload
amplitude is larger, the module will reach shutdown in
a shorter period of time.
A latching shutdown option is standard. If over-current
persists for beyond the overload buffer, the module
will shut down and remain off until the module is reset
by either cycling the input power or by toggling the
on/off pin for one second.
An OCP auto-restart option (code = 3 or 4, see Table
2) is also available in a case where an auto recovery
is required. Once the module has shutdown, after a
period of several 100’s of milliseconds, the module
will restart. If the output overload condition still exists
when the module restarts, it will shut down again. This
operation will continue indefinitely, until the over-
current condition is corrected.
Over-Voltage Protection (OVP)
The output over-voltage protection consists of circuitry
that monitors the voltage on the output terminals. If
the voltage on the output terminals exceeds the over
voltage protection threshold, then the module will
shutdown and latch off. The over-voltage latch is reset
by either cycling the input power for one second or by
toggling the on/off signal for one second. The
protection mechanism is such that the unit can
continue in this condition until the fault is cleared.
An OVP auto-restart option (code = 3, see Table 2) is
also available in a case where an auto recovery is
required. Once the module has shutdown, after a
period of several 100’s of milliseconds, the module
will restart. If the output overload condition still exists
when the module restarts, it will shut down again. This
operation will continue indefinitely, until the over-
current condition is corrected.
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