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DNK12SIP Datasheet(PDF) 10 Page - Delta Electronics, Inc.

Part No. DNK12SIP
Description  Voltage and resistor-based trim
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Manufacturer  DELTA [Delta Electronics, Inc.]
Direct Link  http://www.deltaww.com
Logo DELTA - Delta Electronics, Inc.

DNK12SIP Datasheet(HTML) 10 Page - Delta Electronics, Inc.

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DS_DNK12SIP_09062016
10
FEATURES DESCRIPTIONS
Remote On/Off
The DNK series power modules have an On/Off pin for
remote On/Off operation. Only negative On/Off logic
option is available in the DNK series power modules.
For negative logic module, the On/Off pin is suggested
to be pulled high with an external pull-up resistor (see
figure 36). Negative logic On/Off signal turns the module
OFF during logic high and turns the module ON during
logic low. If the negative On/Off function is not used,
leave the pin floating or tie to GND. (module will be On)
Vo
Vin
On/Off
GND
Rpull-up
RL
I
ON/OFF
Figure 36: Negative remote On/Off implementation
Over-Current Protection
To provide protection in an output over load fault
condition, the unit is equipped with internal over-current
protection.
When
the
over-current
protection
is
triggered, the unit enters hiccup mode. The units
operate normally once the fault condition is removed.
Over-Temperature Protection
The over-temperature protection consists of circuitry
that provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold
the module will shut down. The module will restart once
the temperature is within specification
Remote Sense
The DNK provide Vo remote sensing to achieve proper
regulation at the load points and reduce effects of
distribution losses on output line. In the event of an open
remote sense line, the module shall maintain local sense
regulation through an internal resistor.
FEATURES DESCRIPTIONS (CON.)
RL
Distribution Losses
Distribution Losses
Distribution Losses
Distribution Losses
Vo
Vin
GND
Sense
Figure 37: Effective circuit configuration for remote sense
operation
Output Voltage Programming
The output voltage of the DNK can be programmed to
any voltage between 0.8Vdc and 5.5Vdc by connecting
one resistor (shown as Rtrim in Figure 38) between the
TRIM and GND pins of the module. Without this external
resistor, the output voltage of the module is 0.8 Vdc. To
calculate the value of the resistor Rtrim for a particular
output voltage Vo, please use the following equation:
Rtrim
1200
Vo
0.80
100
:=
Rtrim is the external resistor in Ω
Vo is the desired output voltage
Vo
TRIM
GND
RLoad
Rtrim
Figure 38: Circuit configuration for programming output voltage
using an external resist


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