ããããããã®èšäºãèªãã åŸããã©ã³ãžã¹ã¿ã«åããµã€ãºã®ã©ãžãšãŒã¿ãŒã眮ãå¿ èŠã¯ãªãã§ãããã
ãã®èšäºã®ç¿»èš³ã
翻蚳è
ããã®å°ããªé
åïŒ
ãŸãããã®ç¿»èš³ã§ã¯ãçšèªã®ç¿»èš³ã«é倧ãªåé¡ãçºçããå¯èœæ§ããããŸããé»æ°å·¥åŠãšåè·¯ãååã«æ±ã£ãŠããŸããã§ãããããŸã äœããç¥ã£ãŠããŸãã ãŸãããã¹ãŠãå¯èœãªéãæ確ã«ç¿»èš³ããããšãããããããŒãã¹ãã©ãããMOSãã©ã³ãžã¹ã¿ãªã©ã®æŠå¿µã¯äœ¿çšããŸããã§ããã 第äºã«ãã¹ãã«ãã¹ãééããç¯ãã«ããå ŽåïŒãšã©ãŒã瀺ãã¯ãŒãããžã®ç§°è³ïŒãå¥èªç¹ã®ééãã¯éåžžã«ç°¡åã§ãã
ãããŠããããã®2ã€ã®ç¹ã«ã€ããŠãã§ããéãã³ã¡ã³ãããé¡ãããŸãã
次ã«ããã®èšäºã®ãããã¯ã«ã€ããŠè©³ãã説æããŸããMKãArduinoã<ååã®æ¿å ¥>ãããã³åè·¯èªäœã®èšèšãããã«ã¯ãšã³ãžã³æ¥ç¶åè·¯ã®è©³çŽ°ã«ã€ããŠã¯èª¬æããŠããŸããã éåžžã次ã®ããã«ãªããŸãã
-ãšã³ãžã³ãåããŸã
-ã³ã³ããŒãã³ããåããŸã
-ã³ã³ããŒãã³ããšãšã³ãžã³ãæ¥ç¶ããŸã
-...
-å©çïŒ1ïŒ
ãã ããL239xãä»ããŠPWMã¢ãŒã¿ãŒãäžæ¹åã«åçŽã«ããããããè€éãªåè·¯ãæ§ç¯ããã«ã¯ãéåžžããã«ããªããžïŒãŸãã¯HããªããžïŒãé»çå¹æãã©ã³ãžã¹ã¿ïŒãŸãã¯MOSFETïŒãããã³ãããã®ãã©ã€ããŒã®ç¥èãå¿ èŠã§ãã äœãå¶éããªãå Žåãpãã£ã³ãã«ãšnãã£ã³ãã«ã®ãã©ã³ãžã¹ã¿ãŒããã«ããªããžã«äœ¿çšã§ããŸããããšã³ãžã³ãååã«åŒ·åãªå Žåãpãã£ã³ãã«ãã©ã³ãžã¹ã¿ãŒãå€æ°ã®ã©ãžãšãŒã¿ãŒã§åããå¿ èŠããããã¯ãŒã©ãŒãè¿œå ããå¿ èŠããããŸãããå®å šã«ç Žæ£ããå Žåã¯ããã®åŸãä»ã®ã¿ã€ãã®å·åŽãè©Šãããåè·¯ã§nãã£ãã«ãã©ã³ãžã¹ã¿ã®ã¿ã䜿çšã§ããŸãã ããããnãã£ãã«ãã©ã³ãžã¹ã¿ã«ã¯å°ããªåé¡ããããŸãããè¯ãæ¹æ³ã§ãããããéãããšã¯æã éåžžã«å°é£ã§ãã
ã ããç§ã¯æ£ããã¢ãŠãã©ã€ã³ãåŸãã®ã«åœ¹ç«ã€äœããæ¢ããŠããŸããããããŠãSyed Tahmid Mahbubãšããååã®è¥ãç·æ§ã®ããã®ããã°èšäºãèŠã€ããŸããã ãã®èšäºãå ±æããããšã«ããŸããã
ãããŠããããã®2ã€ã®ç¹ã«ã€ããŠãã§ããéãã³ã¡ã³ãããé¡ãããŸãã
次ã«ããã®èšäºã®ãããã¯ã«ã€ããŠè©³ãã説æããŸããMKãArduinoã<ååã®æ¿å ¥>ãããã³åè·¯èªäœã®èšèšãããã«ã¯ãšã³ãžã³æ¥ç¶åè·¯ã®è©³çŽ°ã«ã€ããŠã¯èª¬æããŠããŸããã éåžžã次ã®ããã«ãªããŸãã
-ãšã³ãžã³ãåããŸã
-ã³ã³ããŒãã³ããåããŸã
-ã³ã³ããŒãã³ããšãšã³ãžã³ãæ¥ç¶ããŸã
-...
-å©çïŒ1ïŒ
ãã ããL239xãä»ããŠPWMã¢ãŒã¿ãŒãäžæ¹åã«åçŽã«ããããããè€éãªåè·¯ãæ§ç¯ããã«ã¯ãéåžžããã«ããªããžïŒãŸãã¯HããªããžïŒãé»çå¹æãã©ã³ãžã¹ã¿ïŒãŸãã¯MOSFETïŒãããã³ãããã®ãã©ã€ããŒã®ç¥èãå¿ èŠã§ãã äœãå¶éããªãå Žåãpãã£ã³ãã«ãšnãã£ã³ãã«ã®ãã©ã³ãžã¹ã¿ãŒããã«ããªããžã«äœ¿çšã§ããŸããããšã³ãžã³ãååã«åŒ·åãªå Žåãpãã£ã³ãã«ãã©ã³ãžã¹ã¿ãŒãå€æ°ã®ã©ãžãšãŒã¿ãŒã§åããå¿ èŠããããã¯ãŒã©ãŒãè¿œå ããå¿ èŠããããŸãããå®å šã«ç Žæ£ããå Žåã¯ããã®åŸãä»ã®ã¿ã€ãã®å·åŽãè©Šãããåè·¯ã§nãã£ãã«ãã©ã³ãžã¹ã¿ã®ã¿ã䜿çšã§ããŸãã ããããnãã£ãã«ãã©ã³ãžã¹ã¿ã«ã¯å°ããªåé¡ããããŸãããè¯ãæ¹æ³ã§ãããããéãããšã¯æã éåžžã«å°é£ã§ãã
ã ããç§ã¯æ£ããã¢ãŠãã©ã€ã³ãåŸãã®ã«åœ¹ç«ã€äœããæ¢ããŠããŸããããããŠãSyed Tahmid Mahbubãšããååã®è¥ãç·æ§ã®ããã®ããã°èšäºãèŠã€ããŸããã ãã®èšäºãå ±æããããšã«ããŸããã
å€ãã®å Žåããããã¬ãã«ã¹ã€ãããšããŠé»çå¹æãã©ã³ãžã¹ã¿ã䜿çšããå¿ èŠããããŸãã ãŸããå€ãã®ç¶æ³ã§ãé»çå¹æãã©ã³ãžã¹ã¿ãäžäœã¬ãã«ãšäžäœã¬ãã«ã®äž¡æ¹ã®ããŒãšããŠäœ¿çšããå¿ èŠããããŸãã ããšãã°ãããªããžåè·¯ã éšåããªããžåè·¯ã«ã¯ã1ã€ã®äžäœã¬ãã«MOSFETãš1ã€ã®äžäœã¬ãã«MOSFETããããŸãã ãã«ããªããžèšèšã§ã¯ã2ã€ã®äžäœã¬ãã«MOSFETãš2ã€ã®äžäœã¬ãã«MOSFETããããŸãã ãã®ãããªç¶æ³ã§ã¯ãé«ã¬ãã«ãšäœã¬ãã«ã®äž¡æ¹ã®ãã©ã€ããŒãäžç·ã«äœ¿çšããå¿ èŠããããŸãã ãã®ãããªå Žåã«é»çå¹æãã©ã³ãžã¹ã¿ãå¶åŸ¡ããæãäžè¬çãªæ¹æ³ã¯ãMOSFETã®äžäœã¬ãã«ãšäžäœã¬ãã«ã®ãã©ã€ãããŒã䜿çšããããšã§ãã ééããªããæã人æ°ã®ãããã©ã€ããŒãããã¯IR2110ã§ãã ãããŠããã®èšäº/æç§æžã§ããã«ã€ããŠã話ããŸãã
IR Webãµã€ãããIR2110ã®ããã¥ã¡ã³ããããŠã³ããŒãã§ããŸãã ããŠã³ããŒããªã³ã¯ã¯ãã¡ãïŒ http : //www.irf.com/product-info/datasheets/data/ir2110.pdf
ãŸãããããã¯å³ãšãé£çµ¡å ã®èª¬æãšå ŽæãèŠãŠã¿ãŸãããã
å³1-IR2110ã®æ©èœãããã¯å³
å³2-IR2110ã®ãã³é å
å³3-IR2110ãã³ã®èª¬æ
ãŸããIR2110ã¯ãåºåå®è£ çšã®14ãã³PDIPãšè¡šé¢å®è£ çšã®16ãã³SOICã®2ã€ã®ã±ãŒã¹ã§å©çšã§ããããšã«ãèšåãã䟡å€ããããŸãã
次ã«ãããŸããŸãªé£çµ¡å ã«ã€ããŠèª¬æããŸãã
VCCã¯äœã¬ãã«ã®é»æºã§ã10Vã20Vã®ç¯å²ã§ããå¿ èŠããããŸãã VDDã¯IR2110ã®è«çé»æºã§ããã+ 3Vã+ 20VïŒVSSã«å¯ŸããŠïŒã§ãªããã°ãªããŸããã 䜿çšããããšãéžæããå®éã®é»å§ã¯ãå ¥åä¿¡å·ã®é»å§ã¬ãã«ã«ãã£ãŠç°ãªããŸãã ã¹ã±ãžã¥ãŒã«ã¯æ¬¡ã®ãšããã§ãã
å³4-è«ç1ã®é»åäŸåæ§
éåžžã+ 5Vã®VDDã䜿çšãããŸãã VDD = + 5Vã®å Žåãããžãã¯1ã®å ¥åãããå€ã¯3Vãããããã«é«ããªããŸãã ãããã£ãŠãé»å§ãVDD = + 5Vã®å ŽåãIR2110ã䜿çšããŠãå ¥åã1ãã3ïŒäžéšïŒãã«ãããé«ããšãã«è² è·ãå¶åŸ¡ã§ããŸãã ããã¯ãã»ãšãã©ã®åè·¯ãéåžžçŽ5Vã®é»åãæã£ãŠãããããIR2110ãã»ãšãã©ãã¹ãŠã®åè·¯ã«äœ¿çšã§ããããšãæå³ããŸãã ãã€ã¯ãã³ã³ãããŒã©ãŒã䜿çšããå Žåãåºåé»å§ã¯4Vããé«ããªããŸãïŒçµå±ããã€ã¯ãã³ã³ãããŒã©ãŒã®é»æºé»å§ã¯VDD = + 5Vã§ããããšãéåžžã«å€ãããã§ãïŒã SG3525ãŸãã¯TL494ãŸãã¯å¥ã®PWMã³ã³ãããŒã©ãŒã䜿çšããå Žåããããã10Vãè¶ ããé»å§ã§é»åãäŸçµŠããªããã°ãªããŸãããã€ãŸããè«çãŠãããã®åºåã«ã¯8Vãè¶ ããé»å§ãçºçããŸãã ãããã£ãŠãIR2110ã¯ã»ãŒã©ãã§ã䜿çšã§ããŸãã
ãã€ã¯ãã³ã³ãããŒã©ãŸãã¯3.3VåºåãçæãããããïŒdsPIC33ãªã©ïŒã䜿çšããå ŽåãVDDãçŽ+ 4Vã«äžããããšãã§ããŸãã IR2110ã䜿çšããŠåè·¯ãèšèšããéãIR2110ã®VDDã+ 4Væªæºã«éžæãããå Žåãåè·¯ãé©åã«åäœããªãããšãããããšã«æ°ä»ããŸããã ãããã£ãŠã+ 4Væªæºã®VDDã䜿çšããããšã¯ãå§ãããŸããã ã»ãšãã©ã®åè·¯ã§ã¯ãä¿¡å·ã¬ãã«ã®é»å§ãã1ããšããŠ4Væªæºã§ã¯ãªããããVDD = + 5Vã䜿çšããŸãã
åè·¯å ã®äœããã®çç±ã§è«çã1ãã®ä¿¡å·ã¬ãã«ã®é»å§ã3Væªæºã®å Žåãã¬ãã«ã³ã³ããŒã¿ãŒ/ã¬ãã«ãã©ã³ã¹ã¬ãŒã¿ãŒã䜿çšããå¿ èŠããããŸããé»å§ã蚱容ç¯å²ãŸã§äžããŸãã ãã®ãããªç¶æ³ã§ã¯ã4VãŸãã¯5Vã«äžããŠãIR2110 VDD = + 5Vã䜿çšããããšããå§ãããŸãã
次ã«ãVSSãšCOMã«ã€ããŠèª¬æããŸãã VSSã¯ããžãã¯ã®ã©ã³ãã§ãã COMã¯ãäœã¬ãã«ãªã¿ãŒã³ãã§ããåºæ¬çã«ããã©ã€ããŒã®äœã¬ãã«ã¢ãŒã¹ã§ãã ãããã¯ç¬ç«ããŠããããã«èŠãããããããŸãããããã©ã€ããŒåºåãšãã©ã€ããŒä¿¡å·ããžãã¯ãåé¢ããããšã¯ããããå¯èœã§ãããšèãããããããŸããã ããããããã¯ééã£ãŠããã§ãããã å éšçã«ã¯æ¥ç¶ãããŠããŸããããIR2110ã¯é絶çžãã©ã€ããŒã§ããã€ãŸããVSSãšCOMã®äž¡æ¹ãã°ã©ã³ãã«æ¥ç¶ããå¿ èŠããããŸãã
HINãšLINã¯è«çå ¥åã§ãã HINã®é«ä¿¡å·ã¯ãäžäœããŒãå¶åŸ¡ããããšãæå³ããŸããã€ãŸããHOã§é«ã¬ãã«åºåãå®è¡ãããŸãã HINã®äœä¿¡å·ã¯ãé«ã¬ãã«MOSFETãç¡å¹ã«ããããšãæå³ããŸããã€ãŸããäœã¬ãã«åºåã¯HOã«ãããŸãã HOãžã®åºå£ã¯ãé«äœã«ããããããå°é¢ãšã®é¢ä¿ã§ã¯ãªããVSãšã®é¢ä¿ã§èæ ®ãããŸãã VCCãVBãããã³VSã䜿çšããã¢ã³ãåè·¯ïŒãã€ãªãŒã+ã³ã³ãã³ãµïŒããMOSFETãå¶åŸ¡ããããã®ãããŒãã£ã³ã°é»æºãã©ã®ããã«æäŸãããã«ã€ããŠã¯ãããã«èª¬æããŸãã VSã¯ãããŒãã£ã³ã°ãã¯ãŒãªã¿ãŒã³ã§ãã é«ãã¬ãã«ã§ã¯ãVSã«å¯ŸããHOã®ã¬ãã«ã¯VBã®ã¬ãã«ã«çãããªããŸãã äœã¬ãã«ã§ã¯ãHOã®ã¬ãã«ã¯VSã«å¯ŸããŠVSã«ã»ãŒçãããå®è³ªçã«ãŒãã§ãã
é«ãLINä¿¡å·ã¯ãäœãããŒãå¶åŸ¡ããããšãæå³ããŸããã€ãŸããLOã§é«ã¬ãã«åºåãå®è¡ãããŸãã äœLINä¿¡å·ã¯ãäœã¬ãã«MOSFETãç¡å¹ã«ããããšãæå³ããŸããã€ãŸããäœã¬ãã«åºåã¯LOã«ãããŸãã LOãžã®åºå£ã¯æ¯èŒçéžå°ãšèŠãªãããŸãã ä¿¡å·ãé«ãå ŽåãLOã®ã¬ãã«ã¯ãVSSãå®éã«ã¯ã°ã©ã³ããšæ¯èŒããŠãVCCã®ã¬ãã«ãšåãã§ãã ä¿¡å·ãäœãå ŽåãLOã®ã¬ãã«ã¯VSSã®ã¬ãã«ãšåãã§ãVSSãåºæºã«ããŠå®éã¯ãŒãã§ãã
SDã¯åæ¢å¶åŸ¡ãšããŠäœ¿çšãããŸãã ã¬ãã«ãäœãå ŽåãIR2110ã¯ãªã³ã«ãªããŸã-åæ¢æ©èœã¯ç¡å¹ã«ãªããŸãã ãã®ãã³ããã€ã®ãšããåºåããªãã«ãªããIR2110å¶åŸ¡ãç¡å¹ã«ãªããŸãã
ããã§ãMOSFETãäžäžããŒãšããŠå¶åŸ¡ããããã®IR2110ã®é »ç¹ãªæ§æïŒããŒãããªããžåè·¯ïŒãèŠãŠã¿ãŸãããã
å³5-ããŒãããªããžãå¶åŸ¡ããIR2110ã®åºæ¬åè·¯
D1ãC1ãC2ãšIR2110ãå¢å¹ åè·¯ã圢æããŸãã LIN = 1ã§Q2ããªã³ã«ãªããšã1ã€ã®ãã€ãªãŒãã+ VCCããäžã«ãããããC1ãšC2ãVBã¬ãã«ã«å é»ãããŸãã LIN = 0ããã³HIN = 1ã®å ŽåãC1ããã³C2ã®é»è·ã䜿çšããŠããœãŒã¹ã¬ãã«Q1ãè¶ ããé»å§ïŒãã®å Žåã¯VBïŒãè¿œå ãããããããŒæ§æã®Q1ãå¶åŸ¡ããŸãã Q1ã«å¿ èŠãªé»è·ãäŸçµŠããã®ã«ååã§ããããã«ãC1ã§ååã«å€§ããªå®¹éãéžæããå¿ èŠããããŸããããã«ãããQ1ãåžžã«ãªã³ã«ãªããŸãã ãŸããå é»ããã»ã¹ã«ã¯æéãããããMOSFETããªã³ã«ç¶æããã®ã«ååãªé»å§ã¬ãã«ã«ãªããªããããC1ã®å®¹éã倧ããããªãããã«ããå¿ èŠããããŸãã é»æºãå ¥ãããšãã«æéããããã»ã©ãå¿ èŠãªå®¹éã倧ãããªããŸãã ãããã£ãŠãåšæ³¢æ°ãäœãããã«ã¯ãC1ã®å®¹éã倧ããããå¿ èŠããããŸãã ãã¥ãŒãã£ãµã€ã¯ã«ã倧ããããã«ã¯ããã倧ããªC1容éãå¿ èŠã§ãã ãã¡ããã容éãèšç®ããããã®å ¬åŒããããŸããããã®ããã«ã¯å€ãã®ãã©ã¡ãŒã¿ãç¥ãå¿ èŠãããããããã®ããã€ãã¯ãããšãã°ã³ã³ãã³ãµã®æŒãé»æµãç¥ããªãå ŽåããããŸãã ãããã£ãŠãããããã®å®¹éãè©äŸ¡ããŸããã 50Hzãªã©ã®äœåšæ³¢æ°ã§ã¯ã47uFãã68uFã®å®¹éã䜿çšããŸãã 30ã50kHzãªã©ã®é«åšæ³¢ã§ã¯ã4.7uFã22uFã®å®¹éã䜿çšããŸãã é»è§£ã³ã³ãã³ãµã䜿çšããŠããããããã®ã³ã³ãã³ãµãšäžŠåã«ã»ã©ããã¯ã³ã³ãã³ãµã䜿çšããå¿ èŠããããŸãã å¢å¹ ã³ã³ãã³ãµãã¿ã³ã¿ã«ã®å Žåãã»ã©ããã¯ã³ã³ãã³ãµã¯ãªãã·ã§ã³ã§ãã
D2ãšD3ã¯MOSFETã²ãŒããè¿ éã«æŸé»ããã²ãŒãæµæããã€ãã¹ããŠããªããæéãççž®ããŸãã R1ãšR2ã¯é»æµå¶éã²ãŒãæµæã§ãã
+ MOSVã¯æ倧500Vã§ãã
+ VCCã¯å¹²æžãåããã«ãœãŒã¹ããäŸçµŠãããå¿ èŠããããŸãã ãã£ã«ã¿ãªã³ã°ã®ããã«ã+ VCCããã°ã©ã³ãã«ãã£ã«ã¿ãªã³ã°ããã³çµ¶çžã³ã³ãã³ãµãåãä»ããå¿ èŠããããŸãã
次ã«ãIR2110ã䜿çšããããã€ãã®åè·¯äŸãèŠãŠã¿ãŸãããã
å³6-é«é»å§ããŒãããªããžçšã®IR2110ã䜿çšããã¹ããŒã
å³7-ç¬ç«ããããŒç®¡çãåããé«é»å§ãã«ããªããžã®IR2110ã®å³ïŒã¯ãªãã¯å¯èœïŒ
å³7ã§ã¯ããã«ããªããžã®å¶åŸ¡ã«IR2110ã䜿çšãããŠããŸãã è€éãªããšã¯äœããããŸããããããã§ç解ã§ãããšæããŸãã ããã§ããªãäžè¬çãªç°¡ç¥åãé©çšããããšãã§ããŸããHIN1ãLIN2ã«æ¥ç¶ããHIN2ãLIN1ã«æ¥ç¶ããŸããããã«ããã4ã§ã¯ãªã2ã€ã®å ¥åä¿¡å·ã®ã¿ã䜿çšããŠ4ã€ã®ããŒãã¹ãŠãå¶åŸ¡ã§ããŸãããããå³8ã«ç€ºããŸãã
å³8-2ã€ã®å ¥åãåããããŒç®¡çãåããé«é»å§ãã«ããªããžã®IR2110ã«ããã¹ããŒã ïŒã¯ãªãã¯å¯èœïŒ
å³9-é«é»å§ãããã¬ãã«ãã©ã€ããŒãšããŠIR2110ã䜿çšããå³
å³9ã§ã¯ãIR2110ããããã¬ãã«ãã©ã€ããŒãšããŠäœ¿çšãããŠããŸãã åè·¯ã¯éåžžã«ã·ã³ãã«ã§ãäžèšãšåãæ©èœãåããŠããŸãã èæ ®ããå¿ èŠããããã®ããããŸã-äžäœã¬ãã«ã®ããŒããªããªã£ããããOUTããã°ã©ã³ãã«æ¥ç¶ãããè² è·ãå¿ èŠã§ãã ããããªããšãã¢ã³ãã®ã³ã³ãã³ãµãå é»ã§ããªããªããŸãã
å³10-äžäœã¬ãã«ã®ãã©ã€ããŒãšããŠIR2110ã䜿çšããå³
å³11-ãã¥ã¢ã«äœã¬ãã«ãã©ã€ããŒãšããŠIR2110ã䜿çšããå³
IR2110ã«åé¡ãããããã¹ãŠã絶ããã¯ã©ãã·ã¥ãççŒããŸãã¯ççºããå Žåã¯ããã¡ããããã¹ãŠãæ éã«èšèšããã®ã«ãã²ãŒããœãŒã¹æµæã䜿çšããŠããªãããã§ãã ã²ãŒããŠã§ã€ãœãŒã¹ã®æµæã«ã€ããŠæ±ºããŠå¿ããªãã§ãã ãã ã èå³ãããå Žåã¯ãããã§ã®ç§ã®çµéšã«ã€ããŠèªãããšãã§ããŸãïŒæµæåšãæå·ãé²ãçç±ã説æããŸãïŒïŒ http : //tahmidmc.blogspot.com/2012/10/magic-of-knowledge.html
ããã«èªãã«ã¯ãããããå§ãããŸãïŒ http : //www.irf.com/technical-info/appnotes/an-978.pdf
å€ãã®ãã©ãŒã©ã ã§ã人ã ãIR2110ã®åè·¯èšèšã«èŠåŽããŠããã®ãèŠãŸããã ãŸããèªä¿¡ãæã£ãŠäžè²«ããŠæåãããã©ã€ããŒåè·¯ãIR2110ã§æ§ç¯ããåã«ãå€ãã®å°é£ãæ±ããŠããŸããã IR2110ã®ã¢ããªã±ãŒã·ã§ã³ãšäœ¿çšæ¹æ³ãéåžžã«æ éã«èª¬æããéäžã§ãã¹ãŠã説æããå€æ°ã®äŸã䜿çšããŠã¿ãŸããããããIR2110ã§ã®åãçµã¿ã«åœ¹ç«ã€ããšãé¡ã£ãŠããŸãã