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DCM04S0A0S12PFA Datasheet(PDF) 8 Page - Delta Electronics, Inc. |
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DCM04S0A0S12PFA Datasheet(HTML) 8 Page - Delta Electronics, Inc. |
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8 / 17 page  DS_ DCM04S0A0S12PFA_10022013 E-mail: DCDC@delta.com.tw http://www.deltaww.com/dcdc P8 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 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 28). Negative logic On/Off signal turns the module ON during the logic low and turns the module OFF during the logic high. 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 29). 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 28: Negaitive remote On/Off implementation Vo O n/O ff V in GND Q1 RL R pull- up I O N /O FF Figure 29: Positive remote On/Off implementation Remote Sense The DCM 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. The module shall correct for a total of 0.5V of loss. The remote sense line impedance shall be < 10 . Vo Sense Vin GND RL Distribution Losses Distribution Losses Distribution Losses Distribution Losses Figure 30: Effective circuit configuration for remote sense operation Output Voltage Programming The output voltage of the DCM can be programmed to any voltage between 0.6Vdc and 3.3Vdc by connecting one resistor (shown as Rtrim in Figure 31) between the TRIM and GND pins of the module. Without this external resistor, the output voltage of the module is 0.6 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, please use the following equation: k Vo Rtrim 6 . 0 2 . 1 For example, to program the output voltage of the DCM module to 1.8Vdc, Rtrim is calculated as follows: K k Rtrim 1 6 . 0 8 . 1 2 . 1 Vo TRIM GND RLoad Rtrim Figure 31: Circuit configuration for programming output voltage using an external resistor |
Similar Part No. - DCM04S0A0S12PFA_14 |
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Similar Description - DCM04S0A0S12PFA_14 |
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