24644R Vicor

BRICK FAMILY USER GUIDE Maxi and Mini DC-DC Converter Evaluation Board Features ...........................................................................1 Features Introduction .....................................................................2 Oscilloscope probe jack for output voltage and Set Up ripple measurements + OUT, OUT................................................................3 Provisions for fusing + S, S..........................................................................3 Bypass capacitors Secondary Control (SC).................................................3 Primary Control (PC).....................................................4 Kelvin voltage sense points Parallel (PR) ..................................................................4 Easy to parallel for higher power Input Fusing .................................................................4 Recommended Hardware.................................................4 Thermals ..........................................................................5 Basic Evaluation ...............................................................5 Output Voltage Measurement Jack (J1).........................5 Input Current Measurement .........................................6 Efficiency Measurement................................................6 Paralleling ....................................................................6 Caution............................................................................9 Maxi and Mini DC-DC Converter Evaluation Board Rev. 1.0 Page 1Introduction Set Up The Maxi and Mini Evaluation Boards offer a convenient The Customer Evaluation Board should be set up as means to evaluate the performance of Vicors DC-DC follows: converters and have been optimized for user convenience. Note: Care should be taken to avoid reversing polarities if Refer to the appropriate DC-DC converter data sheet for connecting to the opposite (solder) side of the board. performance and operating limits. The data sheets are available for downloading at www.vicorpower.com/dc-dc- + IN, IN converters-board-mount/maxi-mini-micro-dc-dc-converters. Connect a high-quality, low-noise power supply to the +IN and IN terminals of the Evaluation Board. The interconnect It is important to remember the fast response of most leads should be heavy gauge and as short as possible. DC-DC converters can readily show the limitations of the Additional capacitance may have to be added on the source, load, and associated wiring connected to the evaluation board to make up for impedances in the evaluation board. Care should be exercised to minimize interconnect leads as well as deficiencies in the source. stray source and load impedances in order to fully exercise Kelvin connections IN(K) and +IN(K) can be used to the converter. Please refer to Figure 1 for locations of the monitor the input and are located on the PCB adjacent to input and output connections as viewed from the the input terminals. component side. Figure 1: Maxi Evaluation Board layout and dimensional drawing, component side. Figure 2: Basic Evaluation Board Connections, high voltage input and output Maxi and Mini DC-DC Converter Evaluation Board Rev. 1.0 Page 2