13-000210

Technology in connectors Power Module Input ConnectorMicroTC A Power Module Input Connector Member of Following on the heals of the ATCA standard which was developed by the PICMG subcommittee, the MicroTCA version defines a specification for small, low-cost systems which over time are expected to find their way into a whole range of new applications. Quality in Connection Power Input Connectors for MicroTCA Power Modules An inherent part of a MicroTCA system is at least one power The connector has two high-current contacts and two signal module. Power input connectors are located on the front of a contacts in a conventional D-SUB housing. The signal contacts power module. A cable is installed between the connectors and act as control contacts used for hot swapping, and the specifi - the external power source. cation states that they should be shunted at the cable connec- The MicroTCA specification defines the interface which tor end. should be applied. At the maximum rated current of 24A per power pin for the 7W2 version and 49A for the 9W4 type, the temperature rise at Specification for Power Input Connectors the contact must not exceed 30 C. Furthermore the specification claims, that the connector should The 7W2 combination D-SUB connector was selected for be designed for 200 mating cycles and additional EMI filtering power supplies with -48 V and -60 V inputs. options should be available. For coding purposes, the 9W4 was chosen for +24V inputs.