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CP2000DC54 Datasheet(PDF) 5 Page - Lineage Power Corporation |
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CP2000DC54 Datasheet(HTML) 5 Page - Lineage Power Corporation |
5 / 8 page Data Sheet Compact Power Line CP2000DC54-PE DC/DC Converter Lineage Power 5 Status and Control The PEM provides two means for monitor/control: analog or I 2C. Details of analog controls are provided in this data sheet under Signal Definitions. Lineage Power will provide separate application notes on the I 2C protocol for users to interface to the CPL PEMs. Contact your local Lineage Power representative for details. Hot Plug When rapidly extracting and reinserting modules care should be taken to allow for discharging the internal bias supply so that a predictable restart could be achieved. The way to ensure that the circuit sufficiently discharges is to observe the spinning of the fans after an extraction. The unit should not be reinserted until the fans stop spinning. Without bleeding down internal bias the module may remember its last assigned address and may not configure itself properly if reinserted into another slot. Control Definitions All signals are referenced to Logic_GRD unless otherwise noted. See the Signal Definitions Table at the end of this document for further description of all the signals. Input Signals Margining: Set point of the PEM can be changed via this input pin. Programming can be either a voltage source or a resistance divider. The margining pin is connected to 3.3Vdc via a 10kΩ resistor inside the PEM. See graphs below. -58 -46 0.1 3.3Vdc Vcontrol -44 0 An open circuit on this pin reverts the voltage level back to the original setting. Software commanded margining overrides the hardware set point indefinitely or until the default setting is reinstated for example if input power and bias power have been removed from the module. Module Present Signal: The power supply alerts the system when it is properly plugged in via a 500Ω resistor in series between this signal and Logic GRD. Protocol Select: This pin must remain a no- connect. Do not connect to either output or Logic_GRD. Enable: On/Off control when I 2C communications are utilized as configured by the Protocol pin. This pin must be pulled low to turn ON the power supply. The power supply will turn OFF if either the Enable or the ON/OFF pin is released. This signal is referenced to Logic_GRD. ON/OFF: This is a short pin utilized for hot-plug applications to ensure that the power supply turns OFF before the power pins are disengaged. It also ensures that the power supply turns ON only after the power pins have been engaged. Must be connected to V_OUT (-DC). Output Signals Power_OK: This signal is HI when the main output is present and goes LO when the main output is not present. I_limit: This signal is HI when the main output is not in current limit and goes LO when current limit has activated. Alert #: I 2C interrupt signal. Fault: This signal goes LO for any failure that requires PEM replacement. Some of these faults may be due to: Fan failure Over-temperature condition Over-temperature shutdown Over-voltage shutdown Internal PEM Fault |
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