Panasonic EVB-NN30312A User Manual

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Panasonic EVB-NN30312A User Manual Manual pdf 8 page image

814EVB-NN30312AUser’s Guidefor Evaluation BoardRevisedTotal Pages PageTentativeIndustrial Devices Company, Panasonic CorporationRegulationsNo. 312A805E2012-04-17This section describes how to properly connect, set up and use the Evaluation Board.4 Test Setup4.1 Main Test Points and JumpersThe Evaluation Board is provided with test points and jumpers as shown in Table 6.A power supply cable of supplying 7A must be connected to the pad PVIN. The load must be connected to the padDCDCOUT. Wire lengths must be minimized to reduce losses in the wires.Test point PVIN provides a place to monitor the input voltages with GND providing a convenient ground reference.Test point DCDCOUT is used to monitor the output voltage with GND as the ground reference.Jumper Setup is shown in Table 7.Reference Designator Default FunctionMainTestPointsPVIN - PVIN test point at PVIN connectorDCDCOUT - DCDCOUT test point at DCDCOUT connectorV-EN - Test point supplying voltage to EN pinJumpers J-EN V-EN 3-pin headers for enable of NN30312A. Connect EN to GND todisable, to V-EN to enable.J-MODE VREG 3-pin headers to choose mode. Connect MODE to GND to chooseSKIP mode, to VREG to choose FCCM mode.J-FSEL - 3-pin headers to choose frequency. Connect FSEL to GND tochoose 1250kHz, open to choose 750kHz, to VREG to choose250kHz.J-PGOOD open 3-pin headers for pull-up of PGOOD. Connect to VREG to allowpull up to VREG pin, to V-EXT to allow pull up to V-EXT pin.Table 6. Function of Main Test points and JumpersJumper Setup Mode Setup Mode Setup ModeJ-ENenable disable disableJ-MODEFCCMmodeSKIP mode SKIP modeJ-FSEL250kHz 750kHz 1250kHzJ-PGOOD Pull up toVREG openPull up toV-EXTTable 7. Jumper SetupV-ENEN pinGNDJ-ENV-ENEN pinGNDJ-ENV-ENEN pinGNDJ-ENVREGMODE pinGNDJ-MODEVREGMODE pinGNDJ-MODEVREGMODE pinGNDJ-MODEVREGFSEL pinGNDJ-FSELVREGFSEL pinGNDJ-FSELVREGFSEL pinGNDJ-FSELPull up to VREGPGOOD pinPull up to V-EXTJ-PGOODPull up to VREGPGOOD pinPull up to V-EXTJ-PGOODPull up to VREGPGOOD pinPull up to V-EXTJ-PGOODNote: The parameters above is subject to change without notice for improvement.