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DCL12S0A0S12NFA Datasheet(PDF) 11 Page - Delta Electronics, Inc. |
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DCL12S0A0S12NFA Datasheet(HTML) 11 Page - Delta Electronics, Inc. |
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11 / 20 page  DS_DCM12S0A0S12NFA_10022013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P11 DESIGN CONSIDERATIONS (CON.) 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 fast acting fuse with a maximum rating of 15A in the positive input lead. Input Under voltage Lockout At input voltages below the input under voltage lockout limit, the module operation is disabled. The module will begin to operate at an input voltage above the under voltage lockout turn-on threshold. 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. FEATURES DESCRIPTIONS Remote On/Off The DCM 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 DCM 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 40). 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 5kΩ resistor (see figure 41). 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 O n/O ff V in GND Q1 RL I O N /O F F Figure 40: Positive remote On/Off implementation Vo O n/O ff V in GND Q1 RL R pull- up I O N /O FF Figure 41: Negative remote On/Off implementation |
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