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DNK12SIP Datasheet(PDF) 10 Page - Delta Electronics, Inc. |
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DNK12SIP Datasheet(HTML) 10 Page - Delta Electronics, Inc. |
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10 / 15 page  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 − Ω ⋅ := 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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