GE Industrial Solutions CP2000DC54-PE - Manual (Page 14)

GE Data Sheet
CP2000DC54-PE series dc-dc converter
Input: -40Vdc to -72Vdc; Outputs: ±54Vdc @ 2000W; 5Vdc @ 4W
August 20, 2013
©2013 General Electric Company. All rights reserved. Page 14
Signal Definitions
All hardware alarm signals (Fault, Power_OK, I_Limit, OTW) are open drain FETs. These signals should be pulled HI to either 3.3V or 5V. Maximum sink
current 5mA. An active LO signal (< 0.4Vdc) state is referenced to Logic GRD unless otherwise stated. Contact your Lineage Power representative for
more details.
Function Label Type Description
Output Enable Enable Input If shorted to LOGIC_GRD, the PEM output is enabled when using I 2 C mode of
operation. May also be toggled to reset a latched OFF PEM.
Output Good Power_OK Output An open drain FET; normally HI, indicating output power is present. Changes to LO
when the main output is OFF,
Current Limit I_Limit Output An open drain FET; normally HI, indicating normal operation. Changes to LO when
in current limit,
I 2 C Interrupt Alert#_0
Alert#_1 Output Interrupt signal via I 2 C lines indicating that service is requested from the host
controller. This signal pin is pulled up to 3.3V via a 10kΩ resistor and switches to
active LO when an interrupt occurs.
PEM Fault Fault Output Indicates that an internal fault exists. An open drain FET; normally HI, changes to
LO.
Module Present MOD_PRES Output Used to Indicate presence of PEM.
ON/OFF ON/OFF Input Short pin, connects last and breaks first; used to activate and deactivate output
during hot-insertion and extraction, respectively. Ref: V_OUT (-DC)
Margining Margin Input Allows changing of output voltage through an analog voltage input or via resistor
divider.
Over-Temperature Warning OTW Output An open drain FET; normally HI, changes to LO approximately 5°C prior to thermal
shutdown.
PEM address Unit_addr Input Voltage level addressing of PEMs within a single shelf. Ref: V_OUT (-DC).
Shelf Address Shelf_addr Input Voltage level addressing of PEMs within multiple shelves. Ref: V_OUT (-DC).
Back bias 8V_INT _ Diode OR’ed 8Vdc drain; used to back bias microprocessors and DSP of failed PEM
from operating PEMs. Ref: V_OUT (-DC).
Mux Reset Reset Input Resets the I 2 C lines to I 2 C line 0.
Standby power 5VA Output 5V at 0.75A provided for external use by either adjacent power supplies or the
using system.
Current Share Ishare - A single wire interface between each of the power unit forces them to share the
load current. Ref: V_OUT (-DC).
I 2 C Line 0 SCL_0, SDA_0 Input I 2 C line 0.
I 2 C Line 1 SCL_1, SDA_1 Input I 2 C line 1.