GE Industrial Solutions KBVW006A0B Series - Manual (Page 7)

GE
Data Sheet
KBVW006A0B Series Sixteenth-Brick Power Modules
36–75Vdc Input; 12.0Vdc Output; 6A Output Current
July 9, 2013 ©2012 General Electric Company. All rights reserved. Page 7
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.
ON/OFF
Vin+
Vin-
I
on/off
V
on/off
Vout+
TRIM
Vout-
Figure 10. Remote On/Off Implementation.
To turn the power module on and off, the user must
supply a switch (open collector or equivalent) to control
the voltage (V
on/off
) between the ON/OFF terminal and the
V
IN
(-) terminal (see Figure 10). Logic low is -
0.75V ≤ V
on/off
≤ 0.6V. The maximum I
on/off
during a logic
low is 0.15mA; the switch should maintain a logic low
level whilst sinking this current.
During a logic high, the typical maximum V
on/off
generated by the module is 3.9V, and the maximum
allowable leakage current at V
on/off
= 2.4V is 25μA.
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
IN
(-).
Remote Sense
Remote sense minimizes the effects of distribution losses
by regulating the voltage at the remote-sense
connections (See Figure 11). 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:
[V
O
(+) – V
O
(–)] – [SENSE(+) – SENSE(–)]  0.5 V
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
(Maximum rated power = Vo,set x Io,max).
Figure 11. Circuit Configuration for remote sense .
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, the module operation is disabled. The module will
only begin to operate once the input voltage is raised
above the undervoltage lockout turn-on threshold,
V
UV/ON
.
Once operating, the module will continue to operate until
the input voltage is taken below the undervoltage turn-
off threshold, V
UV/OFF
.
Overtemperature Protection
To provide protection under certain fault conditions, the
unit is equipped with a thermal shutdown circuit. The
unit will shutdown if the thermal reference point Tref
(Figure 13), exceeds 125
o C (typical), but the thermal
shutdown is not intended as a guarantee that the unit
will survive temperatures beyond its rating. 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. If the auto-restart option (4) is
ordered, the module will automatically restart upon cool-
down to a safe temperature.
Output Overvoltage Protection
The output over voltage protection scheme of the
modules has an independent over voltage loop to
prevent single point of failure. This protection feature
latches in the event of over voltage across the output.
Cycling the on/off pin or input voltage resets the latching
protection feature. If the auto-restart option (4) is
ordered, the module will automatically restart upon an
internally programmed time elapsing.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current
limiting continuously. At the point of current-limit
inception, the unit enters hiccup mode. If the unit is
not configured with auto–restart, then it will latch off
following the over current condition. 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.
If the unit is configured with the auto-restart option (4), it
will remain in the hiccup mode as long as the
overcurrent condition exists; it operates normally, once
the output current is brought back into its specified
range. The average output current during hiccup is 10%
I
O, max
.
V O (+)
SENSE(+)
SENSE(–)
V O (–)
V I (+)
V I (-)
I O LOAD
CONTACT AND
DISTRIBUTION LOSSE
SUPPLY
I I
CONTACT
RESISTANCE