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EHHD006A0B41Z Datasheet(PDF) 7 Page - Lineage Power Corporation

Part No. EHHD006A0B41Z
Description  EHHD006A0B Series (Eighth-Brick) DC-DC Converter Power Modules
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Maker  LINEAGEPOWER [Lineage Power Corporation]
Homepage  http://www.lineagepower.com
Logo LINEAGEPOWER - Lineage Power Corporation

EHHD006A0B41Z Datasheet(HTML) 7 Page - Lineage Power Corporation

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Data Sheet
August 29, 2011
EHHD006A0B Series Eighth-Brick Power Modules
18 - 75Vdc Input; 12V/6Adc Output
Feature Descriptions
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
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 (Von/off) between the On/Off
terminal and the VIN(-) terminal (see Figure 10). Logic
low is 0V ≤ Von/off ≤ 1.2V. The maximum Ion/off during a
logic low is 1mA and the switch should maintain a
logic low level while sinking this current.
During a logic high, the typical maximum Von/off
generated by the module is 5.6V and the maximum
allowable leakage current at Von/off = 5.6V 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 VIN(-).
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:
[VO(+) – VO(–)] – [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, VUV/ON.
Once operating, the module will continue to operate
until the input voltage is taken below the undervoltage
turn-off threshold, VUV/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, exceeds 135
OC (Figure 13, typical) or 120 OC
(Figure 14, typical), but the thermal shutdown is not
intended as a guarantee that the unit will survive
temperatures beyond its rating. The module will
automatically restart upon cool-down to a safe
Output Overvoltage Protection
The output overvoltage protection scheme of the
modules has an independent overvoltage loop to
prevent single point of failure. This protection feature
latches in the event of overvoltage 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, it will latch off
following the overcurrent condition. The module can
be restarted by cycling the DC input power for at least

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