End of Life See UG:901 for supported adapter. USER GUIDE UG:402 VIA Package PMBus Interface and Accessories User Guide Jon Siegers Ankur Patel Applications Engineering Contents Page Introduction 1 Connector Information - PMBus-USB Adapter 3 Application Details 4 Features 4 VIA to Adapter Bridge Board 5 GUI Configuration 8 Introduction The PMBus-USB Adapter (I2C-ADAPTER-A00) enables communication with the PMBus interface of Vicor power modules in a VIA package using a Host PC. The PMBus control interface provides digital management capabilities and access to the telemetry monitoring and status reporting offered by the product. The PMBus-USB Adapter converts the PMBus interface to a USB communication protocol using an internal isolated controller, allowing users to easily connect to a Host PC (no driver installation is required with Windows operating systems). A GUI, available for download on the Vicor website, provides a convenient means for monitoring and control of the power module. The signal interface of a VIA is used for PMBus communication purposes with the provided GUI installed on the user s PC. All PMBus capabilities and features of the connected power module are available through the GUI, allowing users to read and write into the status configuration registers of the module, observe input and output telemetry, monitor faults and obtain other additional device information. The PMBus-USB Adapter enables easy evaluation of the PMBus digital interface offered on select Vicor products in a test environment. Please note that this User Guide applies only to the operation of the I2C-ADAPTER-A00 PMBus-USB 2 Adapter with Vicor converters in a VIA package. Support for all other Vicor products that include I C or PMBus communication capabilities is provided by the I2C-ADAPTER-A02 PMBus-USB Adapter (see reference document UG:901). UG:402 Page 1End of Life IMPORTANT NOTICE: Hazardous voltages may be present on the interfaced Vicor power module. PERSONAL CONTACT WITH LINE VOLTAGE MAY RESULT IN SEVERE INJURY, DISABILITY, OR DEATH. IMPROPER OR UNSAFE HANDLING OF THIS ACCESSORY AND RELATED POWER MODULE(S) MAY RESULT IN SERIOUS INJURY OR DEATH Read the precautions below entirely BEFORE using the PMBus-USB Adapter. Do not operate the PMBus-USB Adapter unless you have the appropriate precautions in place on your bench to guarantee safety. The list below is not comprehensive and is not a substitute for common sense and good practice. nnDuring operation, the power devices and surrounding structures can be operated safely at high temperatures. nnRemove power from the converter and use caution when connecting and disconnecting test probes and interface lines to avoid inadvertent short circuits and contact with hot surfaces. nnNever use a jumper in place of a fuse. nnAlways use approved safety glasses when testing electronic products. Follow good laboratory practice and procedures. nnAvoid creating ground loops when making measurements of the isolated input or output voltage and signals. nnCare should be taken to protect the user from accidental contact with electrical terminals when operating under power. nnCare should be taken to avoid reversing polarities if connecting to the opposite (solder) side of the board. nnThe PMBus-USB Adapter described in this document is designed for general laboratory evaluation, and is not suitable for installation in end user equipment or applications. nnRefer to the specific Vicor power module data sheet of the interfaced product(s) for electrical, thermal, and mechanical product details. nnSignal cables 43503-01 and 43503-02 are rated up to five insertions and extractions into the VIA signal cable receptacle. Insert and extract the VIA signal connector cables by firmly grasping the connector body housing. To avoid unnecessary stress on the connector, the cable should be appropriately strain relieved. UG:402 Page 2