OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

FNW700R64-18Z

P1-P3P4-P6P7-P9P10-P12P13-P14
GE
Data Sheet
FNW700R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 700W Output
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 7
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:
The input source is to be provided with reinforced
insulation from any hazardous voltage, including the
ac mains.
One V
I
pin and one V
o
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.
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
30 A fast-acting fuse in the unearthed lead.
Feature Description
Remote On/Off
Remote ON/OFF control is available as standard and has
positive logic remote On/Off mode only. The converter will
be active as long as a current Ion/off (1 to 5mA) is flowing
into the ON/OFF+ (pin 4) and from the ON/OFF- (pin 3), and
inactive when no current is flowing. Remote control pins
are isolated up to 1.5 kV. The voltage to drive this current
can be derived from the input voltage, the output voltage,
or an external supply with an appropriate current limit
resistor. The maximum forward current allowable without
damage is 5 mA, and the maximum reverse current is
10mA. A typical remote ON/OFF circuit is shown as Figure
10. The current limit resistor (R1) is connected from Vin (+)
pin to ON/OFF + pin, an open collector or an equivalent
switch can be connected between ON/OFF - and V
I
(-) pins
to control ON/OFF operation. A 0 Ohm resistor (R2) can be
used if no open collector or switch used. For 48Vin, an
appropriate R1 value is recommended to be 30Kohm
(0.5W).
Figure 10. Circuit configuration for using Remote
On/Off Implementation.
Overcurrent Protection
To provide protection in a fault output overload condition,
the module is equipped with internal current-limiting
circuitry and can endure current limit for few milli-
seconds. A latching shutdown option is standard. If
overcurrent persists for few milli-seconds, 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 auto-restart option (4) is also available in a case where
an auto recovery is required. If overcurrent persists for few
milli-seconds, the module will shut down and auto restart
until the fault condition is corrected. If the output overload
condition still exists when the module restarts, it will shut
down again. This operation will continue indefinitely, until
the overcurrent condition is corrected.
Over Voltage Protection
The output overvoltage 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 overvoltage 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 auto-restart option (4) is also available in a case where
an auto recovery is required.
Output Voltage Programming
Trimming allows the user to increase or decrease the
output voltage set point of a module. Trimming down is
accomplished by connecting an external resistor between
the TRIM pin and the SENSE(-) pin. Trimming up is
accomplished by connecting external resistor between the
SENSE(+) pin and V
o
(+) pin. The trim resistor should be
positioned close to the module.
Be sure to use a zero resistor or short SENSE(+) and V
o
(+)
pins when the trim up function is not used.
If not using the trim down feature, leave the TRIM pin
open.
GE
Data Sheet
FNW700R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 700W Output
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 8
Feature Description (continued)
With an external resistor between the TRIM and SENSE(-)
pins (R
adj-down
), the output voltage set point (V
o,adj
)
decreases (see Figure 11). The following equation
determines the required external-resistor value to obtain a
percentage output voltage change of %.
For output voltages: 28V
K1
%
100
97.5R
downadj
Where,
100
V
VV
%
nom,o
desirednom,o
V
desired
= Desired output voltage set point (V).
Figure 11. Circuit Configuration to Decrease Output
Voltage.
Trim Up – Increase Output Voltage
With an external resistor connected between the Vo(+) and
SENSE(+) pins
(R
adj-up
), the output voltage set point (V
o,adj
)
increases (see Figure 12).
The following equation determines the required external-
resistor value to obtain a percentage output voltage
change of %.
For output voltages: 28V
K
100
%nom,Vo
R upadj
Where,
100
V
VV
%
nom,o
nom,odesired
V
desired
= Desired output voltage set point (V).
Figure 12. Circuit Configuration to Increase Output
Voltage.
The voltage between the V
o
(+) and V
o
(-) terminals must not
exceed the minimum output overvoltage shut-down value
indicated in the Feature Specifications table. This limit
includes any increase in voltage due to remote- sense
compensation and output voltage set-point adjustment
(trim). See Figure 13.
Although the output voltage can be increased by both the
remote sense and by the trim, the maximum increase for
the output voltage is not the sum of both. The maximum
increase is the larger of either the remote sense or the
trim.
The amount of power delivered by the module is defined
as the voltage at the output terminals multiplied by the
output current. When using remote sense and trim, the
output voltage of the module can be increased, which the
same output current would increase the power output of
the module. Care should be taken to ensure that the
maximum output power of the module remains at or
below the maximum rated power.
Examples:
To trim down the output of a nominal 28V module to 16.8V
100
28
8.1628
%
V
VV
% = 40
K1
40
100
97.5R downadj
R
adj-down
= 8.96 k
To trim up the output of a nominal 28V module to 30.8V
100
V28
V28V8.30
%
% = 10
K
100
1028
R
upadj
R
adj-up
= 2.8 K
GE
Data Sheet
FNW700R Power Modules; DC-DC Converters
36 – 75 Vdc Input; 28Vdc Output; 700W Output
October 1, 2015 ©2012 General Electric Company. All rights reserved. Page 9
Feature Description (continued)
Remote sense
Remote sense minimizes the effects of distribution losses
by regulating the voltage at the remote-sense connections
(see Figure 13). For No Trim or Trim down application, the
voltage between the remote-sense pins and the output
terminals must not exceed the output voltage sense range
given in the Feature Specifications table i.e.:
[Vo(+) – Vo(-)] – [SENSE(+) – SENSE(-)]  2% of V
o,nom
.
The voltage between the Vo(+) and Vo(-) terminals must
not exceed the minimum output overvoltage shut-down
value indicated in the Feature Specifications table. This
limit includes any increase in voltage due to remote-sense
compensation and output voltage set-point adjustment
(trim). See Figure 13. If not using the remote-sense feature
to regulate the output at the point of load, then connect
SENSE(+) to Vo(+) and SENSE(-) to Vo(-) at the module.
Although the output voltage can be increased by both the
remote sense and by the trim, the maximum increase for
the output voltage is not the sum of both. The maximum
increase is the larger of either the remote sense or the
trim. The amount of power delivered by the module is
defined as the voltage at the output terminals multiplied
by the output current. When using remote sense and trim:
the output voltage of the module can be increased, which
at the same output current would increase the power
output of the module. Care should be taken to ensure that
the maximum output power of the module remains at or
below the maximum rated power.
Figure 13. Effective Circuit Configuration for Single-
Module Remote-Sense Operation Output Voltage.
Over Temperature Protection
The FNW700R module provides with non-latching over
temperature protection. A temperature sensor monitors
the operating temperature of the converter. If the
reference temperature exceeds a threshold of 106 °C
(typical) at the center of the baseplate, the converter will
shut down and disable the output. When the baseplate
temperature has decreased by approximately 20 ºC the
converter will automatically restart.
The module can be restarted by cycling the dc input
power for at least one second or by toggling the remote
on/off signal for at least one second.
Auxiliary Power Output
The module has an auxiliary power output, available on
pin 16, referenced to the Sense- pin. The output is derived
from the internal secondary bias supply and is capable of
delivering up to 15 mA, with a voltage range that varies
between 9V
dc
and 13 V
dc
. This supply is typically used to
drive LEDs. To prevent internal module damage, do not
connect or short this pin to any other pin on the module.
Power Good Signal
The module contains a power good signal on pin 15,
consisting of an open collector circuit that is referenced to
the Sense- pin on the secondary side of the module. The
power good signal is active low, when the module is
operating normally. The maximum current that can sunk
at this pin, during normal operation active low, is 35 mA
dc
,
and the maximum voltage allowed on the pin, during
module abnormal operation active high, is 35V
dc
. During
transient load changes or during overcurrent hiccup
events, the sanity of the power good signal is not
guaranteed.
P1-P3P4-P6P7-P9P10-P12P13-P14

FNW700R64-18Z

Mfr. #:
Buy FNW700R64-18Z
Manufacturer:
Description:
Isolated DC/DC Converters 36-75Vin 28Vout 25A TH Pin 3.68mm
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet