DNM10SMD10 datasheet(7/15 Pages) DELTA

7 / 15 page

DS_DNM10SMD10_07182012

DESIGN CONSIDERATIONS (CON.)

The power module should be connected to a low

ac-impedance input source. Highly inductive source

impedances can affect the stability of the module. An

input capacitance must be placed close to the modules

input pins to filter ripple current and ensure module

stability in the presence of inductive traces that supply

the input voltage to the module.

Safety Considerations

For safety-agency approval the power module must be

installed in compliance with the spacing and separation

requirements of the end-use safety agency standards.

For the converter output to be considered meeting the

requirements of safety extra-low voltage (SELV), the

input must meet SELV requirements. The power module

has extra-low voltage (ELV) outputs when all inputs are

ELV.

The input to these units is to be provided with a

maximum 15A of glass type fast-acting fuse in the

ungrounded lead.

FEATURES DESCRIPTIONS

Remote On/Off

The DNM series power modules have an On/Off pin for

remote On/Off operation. Both positive and negative

On/Off logic options are available in the DNM series

power modules.

For positive logic module, connect an open collector

(NPN) transistor or open drain (N channel) MOSFET

between the On/Off pin and the GND pin (see figure 21).

Positive logic On/Off signal turns the module ON during

the logic high and turns the module OFF during the logic

low. When the positive On/Off function is not used, leave

the pin floating or tie to Vin (module will be On).

For negative logic module, the On/Off pin is pulled high

with an external pull-up resistor (see figure 22) 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)

Vin

On/Off

GND

ON/OFF

Figure 21: Positive remote On/Off implementation

Vin

On/Off

GND

Rpull-up

ON/OFF

Figure 22: 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

triggered, the unit enters hiccup mode. The units

operate normally once the fault condition is removed.

DNM10SMD10 Datasheet(PDF) 7 Page - Delta Electronics, Inc.

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