vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 1 vi brick ? ac front end evaluation board user guide november 2012 features > oscilloscope probe jack for output voltage and ripple measurements > simple to use > ring lug, screw terminal, and solder connection options > replaceable fuse (5a, 216 littelfuse recommended) important notice: please read this user guide before operating evaluation board. introduction the vi brick ac front end evaluation board ofers a convenient means to evaluate the performance of vicors vi brick ac front end module and has been optimized for user convenience. refer to the table below for operating conditions and limits. this product contains an input line flter. it is important to remember the response of the ac line flter is dependent upon the wiring connected to the evaluation board. care should be exercised to minimize stray source impedances in order to fully exercise the features of the converter. contents page features 1 introduction 1 set up 3 bill of materials 5 recommended 6 hardware thermals 6 ordering info 6
vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 2 basic specifcations and operating limits please use the following table for operating limits: please refer to figure 1 for locations of the input and output connections as viewed from the component side. wires may be soldered directly to the pads instead of ring lugs if desired to minimize circuit impedances. figure 1 vi brick ac front end evaluation board layout and dimensional drawing, component side. (click on drawing to view larger.) table 1 operating limits description specifcation notes input range 85 C 264 vac universal input output voltage 48 vdc partially regulated, selv output power 330 w over entire input range operating temperature -40 to 100 c case temperature output capacitance 6,000 to 12,000f 63v rating
vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 3 danger! high voltage! danger! hot surface! the vi brick ac front end evaluation board contains exposed hazardous voltages. these voltages are within the area marked by the hashed line on the board. the vi brick ac front end evaluation board may be operated at surface temperatures which may pose a thermal hazard to the operator. because of the thermal and voltage hazards, be careful not to touch any exposed surface unless the power is disconnected and the evaluation board has been given sufcient time to cool. the evaluation board is not intended for use in end item equipment. set up the customer evaluation board should be set up as follows: note: care should be taken to avoid reversing polarities if connecting to the opposite (solder) side of the board. ac input connections (j01) danger! high voltage! j01, the screw terminal connector, is for connection of ac input to the ac-dc converter evaluation board. the interconnect leads should be appropriate for the current and voltage supplied to the board. for single phase power, connect line to the pin marked l, neutral to the pin marked n and earth ground to the pin marked earth. corresponding wires in an iec cable are brown, blue, and yellow with a green stripe. the board can be used with three phase power. connect line1 to l and line2 to n. earth ground should still be connected to the earth terminal of j1. +out, Cout there are several connections available on the vi brick ac front end evaluation board. table 1 lists the available connectors and their current rating. do not exceed the rating of the connector or the module. output bulk (electrolytic) capacitance must be attached across the output of the vi brick ac front end evaluation board. refer to table 1 from previous page for the appropriate range of output capacitance. table 2 output connector ratings connector rating recommended connection j02 10 a hold-up capacitor j03 12 a (3 a/contact) mating prm and bcm eval boards ring lugs 100 a general purpose h03 (+out) & h07 (-out) 12 a hold-up capacitor
vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 4 the load should be connected to +out and Cout terminals of the evaluation board with short leads of suitable gauge to carry the output current and minimize losses. a sufcient number of terminal connections should be used to ensure that no terminal sees more than its maximum rated current. the evaluation board can be connected directly to the application for which the module is intended. however the interconnect impedances between the evaluation board and the application can greatly afect the transient response. for applications where transient response is critical, the user should consider mounting the vi brick ac front end module directly to the target application pcb. test points tp12 (Cout) and tp07 (+out) can be used to monitor the output and are located on the pcb adjacent to the output terminals of the ac front end module. earth connections there are several earth connections available on the board. earth must be connected via a low impedance connection in order for the internal line flter to function. these earth connections also provide a safety ground for the baseplate of the module. earth may optionally be connected to either of the vi brick ac front end outputs in order to provide a positive or negative voltage rail with respect to earth. output voltage measurement jack (j12) this connector is provided to make accurate measurements of the output ripple voltage of the vi brick ac front end. many types of scope probes may be directly connected to this point if the probe is equipped with a removable plastic sheath. to avoid creating ground loops when making measurements of the output or input voltage, these measurements should be made separately. figure 2 vi brick ac front end output capacitor (c29) can be added to reduce switching frequency voltage ripple at the probe. (click on drawing to view larger.)
vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 5 table 3 bill of materials ref. description digi-key digi-key future future desc. manufacturer part # manufacturer part # c01 cap x7r 2200pf murata 490-3480-2-nd murata ga355qr7gf222kw01l 10% 250v 2220 c12 capy x7r 4700pf murata 490-3482-2-nd murata ga355dr7gf472kw01l 10% 250v 2220 c13 c29 c30 c31 c32 not applied not applied not applied not applied not applied c33 c34 c35 c36 cap x7r .1uf c37 10% 25v 0805 murata 490-1673-2-nd murata grm21br71e104ka01l c38 c39 cap alum 100uf nichicon uvy1j101mpd-nd nichicon uvy1j101mpd 63v 20% radial f01 fuse holder, wickmann f4546-nd schurter 31.8225 smd, 5x20 h03 & cap alel 6800uf kemet 493-1135-nd nichicon uvz1j682mrd h07 20% 63v 25x50 j01 con 3ckt term no stock no stock weco 140-a-126-smd/03 blk smd j02 con 2 ckt term no stock no stock weco 140-a-126-smd/02 blk smd conn 10pos sullins sullins j03 90deg thruhole electronics s5519-nd electronics PPTC052LJBN-RC female 0.1spc conn 5pos j05 single row molex wm1893-nd te connectivity 1445057-5 right angle jp02 res 0 ohm 3/4w vishay dale 541-0.0wtr-nd vishay dale crcw20100000z0ef 5% 2010 jp03 not applied not applied not applied not applied not applied l01 ind 15.0uh stocked by mouser, part#: mlf2012c150kt 10% 5ma 0805 l05 ind com mode stocked by vicor, part#: 37052-601 600uh 30% 10a ps01 model specifc vicor model specifc vicor model specifc r01 res 6.81 ohm vishay dale 541-6.81cctrnd vishay dale crcw08056r81fkea 1/8w 1% 0805 r09 res 2.2 ohm vishay dale 541-2.20fftrnd vishay dale crcw12062r20fkea 1/4w 1% 1206 r10 not applied not applied not applied not applied not applied var mov, 300v z01 10ka 20mm littelfuse tmov20rp30 littelfuse tmov20rp300e dia radial 0el2t7-nd
vicorpower.com applications engineering: 800 735.6200 rev 1.2 page 6 input current measurement a current probe can be passed around either input lead connected to the vi brick ac front end evaluation board. note that an input capacitor on the evaluation board is downstream of this measurement point. enable (en) danger! high voltage! the en pin can be used to disable the vi brick ac front end module. connecting en to the Cin-pfm pin will disable the module. this will also clear any latching output ovp fault if one has occurred. note that the en pin is referenced to the primary (hazardous voltage) side of the converter. warning: the en pin, or the Cin pfm pin must not be connected to line or output of the vibrick ac front end. effciency measurement as the vi brick ac front end module can deliver and consume large currents, the ef - fect of the pcb must be considered when making an efciency measurement. be certain to accurately measure the voltage using test points tp08 (line1) , tp14 (line2/neu - tral), tp18 (Cout), and tp01 (+out). using these test points will more closely repre - sent the efciency of the vi brick ac front end module. hardware the hardware kit provided with the evaluation board includes the following: > (10) #10 internal tooth lock washers > (10) #10-32 hex nuts > (10) #10 external tooth lock washers > (4) f-f standofs > (10) #10-32 screws > (8) m3 x 5 mm screws > (4) rubber feet ring lugs are also recommended for making output connections. thermals for most lab environments a fan blowing across the evaluation board is recommended. see vi brick thermal management application note at: vicorpower.com/documents/application_notes/an_vibrick%20%20thermmanage.pdf or contact vicor applications engineering for assistance (800) 927-9474. ordering information the evaluation board is specifed by replacing the C00 sufx with Ccb on the vi brick ac front end model number (fe175d480c033fp-cb). the power behind performance 12/2012
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