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DCL12S0A0S03NFA Datasheet(PDF) 11 Page - Delta Electronics, Inc. |
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DCL12S0A0S03NFA Datasheet(HTML) 11 Page - Delta Electronics, Inc. |
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11 / 19 page  DS_DCT04S0A0S03NFA_05292012 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 maximum 6A fuse in the ungrounded 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 DCT 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 DCT series power modules. For negative 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 32). Negative logic On/Off signal turns the module ON during the logic high and turns the module OFF during the logic low. When the negative On/Off function is not used, tie the pin to GND (module will be On). For positive logic module, the On/Off pin is pulled high with an external pull-up 5k Ω resistor (see figure 33). Positive logic On/Off signal turns the module ON during logic high and turns the module OFF during logic low. If the Positive On/Off function is not used, tie the pin to Vin. (module will be On) Vo O n/O ff V in GND Q1 RL I O N /O F F Figure 32: Negaitive remote On/Off implementation Vo On/Off Vin GND Q1 RL Rpull- up I O N /O FF Figure 33: Positive 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. |
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