Although　brushless　DC　motor　(BLDCM)　is　widely　used,　testing　its　drives　is　troublesome.　To　deal　with　the　problem,　the　power　hardware-in-the-loop　(PHIL)　simulator　is　necessary　to　replace　the　real　BLDCM,　which　can　exchange　not　only　signals　but　also　electric　power　with　the　drive.　However,　few　literatures　discussed　the　PHIL　simulator　for　BLDCM　applications.　Design　method　for　the　BLDCM　PHIL　simulator　is　proposed　in　this　paper.　The　line　voltage　based　BLDCM　transient　model　is　established,　which　can　improve　the　fidelity　during　commutation　and　predict　the　floating　phase　voltage.　The　derivation　of　BLDCM　numerical　model　is　based　on　the　bilinear　transform　and　inverse　Z-transform,　which　can　achieve　higher　accuracy　and　cost　low　computational　effort.　Moreover,　without　power　bus　connection　between　the　drive　and　PHIL　simulator,　the　overall　structure　of　PHIL　simulator　is　constructed　based　on　line　voltage　and　only　one　digital　signal　processor　(DSP).　In　addition,　the　analog　frond　end　(AFE)　for　measuring　the　high　speed　PWM　line　voltage　from　the　drive　and　the　linear　mode　power　stage　are　also　designed.　The　effectiveness　of　the　proposed　method　is　validated　by　experimental　results.