J9¼¯ÍÅ|¹ú¼ÊÕ¾¹ÙÍø

Blog

ÐÂÎÅ×ÊѶ

¶«Ö¥ÃæÏòµçѹгÕñµç·ÍƳöпî·ÖÁ¢IGBT £¬ÓÐÖúÓÚ½µµÍ¹¦ºÄ²¢¼ò»¯É豸Éè¼Æ

2020-02-10 09:23

½üÈÕ¶«Ö¥µç×ÓÔª¼þ¼°´æ´¢×°ÖÃÖêʽ»áÉ磨“¶«Ö¥”£©°ä·¢ÍƳö“GT20N135SRA” £¬ÕâÊÇÒ»¿îÓÃÓÚ×ÀÃæµç´Å¯¡¢µç·¹ìÒ¡¢Î¢²¨Â¯µÈ¼ÒÓõçÆ÷µçѹгÕñµç·µÄ1350V·ÖÁ¢IGBT¡£¸Ã²úÆ·ÓÚ¿ËÈÕÆðÆðÍ·³ö»õ¡£

624f89c7-d5b5-4bb0-b8c6-dc1bc3cf48d5

GT20N135SRA²úƷͼ

 

GT20N135SRAµÄ¼¯µç¼«-·¢É伫µÄ¹ÄºÍµçѹ[1]Ϊ1.75V £¬¶þ¼«¹ÜÕýÏòµçѹ[2]Ϊ1.8V £¬±ðÀë±È¶«Ö¥µ±Ç°²úÆ·[3]µÍ10%ºÍ21%¡£IGBTºÍ¶þ¼«¹Ü¶¼Õë¶Ô¸ßΣ¨TC=100¡æ£©Ç°Ìáϵĵ¼Í¨ËðºÄ¸öÐÔ½øÐÐÁ˸Ľø £¬²¢ÇÒпîIGBT»¹ÓÐÖúÓÚ½µµÍÉ豸¹¦ºÄ¡£¸Ã²úÆ·µÄ½á¿ÇÈÈ×èΪ0.48¡æ/W£¨×î´óÖµ£© £¬±Èµ±Ç°²úÆ·[3]µÍ26% £¬ÓÐÖúÓÚ¼ò»¯ÈÈÉè¼Æ¡£

 

пîIGBTÔÚÉ豸¿ª»úʱÄÜÒÖÔìͨ¹ýгÕñµçÈݵĶÌ·µçÁ÷¡£Æäµç·µçÁ÷[4]·åֵΪ129A £¬±Èµ±Ç°²úÆ·[3]µÍ31%¡£ÓÉÓÚÆ䰲ȫ¹¤×÷ÁìÓòÀ©´ó £¬Ïà¶ÔÓÚµ±Ç°²úÆ·[3]¶øÑÔ £¬É豸Éè¼ÆÒ²ÓÐËù¼ò»¯¡£

 

ÀûÓÃ:

•        Ê¹ÓõçѹгÕñµç·µÄ¼ÒÓõçÆ÷£¨Èç×ÀÃæµç´Å¯¡¢µç·¹ìÒºÍ΢²¨Â¯µÈ£©¡£

 

¸öÐÔ:

•        µÍµ¼Í¨ËðºÄ£º

VCE(sat)=1.6V£¨µäÐÍÖµ£©£¨@IC=20A¡¢VGE=15V¡¢Ta=25¡æ£©

VF=1.75V£¨µäÐÍÖµ£©£¨@IF=20A¡¢VGE=0V¡¢Ta=25¡æ£©

•        µÍ½á¿ÇÈÈ×裺Rth(j-C)=0.48¡æ/W£¨×î´óÖµ£©

•        ÔÚÉ豸¿ª»úʱÄÜÒÖÔìͨ¹ýгÕñµçÈݵĶÌ·µçÁ÷

•        ½Ï´óµÄ°²È«¹¤×÷ÁìÓò

 

ÖØÒª¹æ¸ñ:

£¨³ý·Ç»¹ÓÐ×¢Ã÷ £¬@Ta=25¡æ£©

 

Æ÷¼þÐͺÅ

GT20N135SRA

·â×°

TO-247

¾ø¶Ô×î´ó¶î¶¨Öµ

¼¯µç¼«-·¢É伫µçѹ

VCES

£¨V£©

1350

¼¯µç¼«µçÁ÷

£¨DC£©

I£Ã

@TC=25¡æ

£¨A£©

40

¼¯µç¼«µçÁ÷

£¨DC£©

I£Ã

@TC=100¡æ

£¨A£©

20

½áÎÂ

Tj

£¨¡æ£©

175

¼¯µç¼«-·¢É伫¹ÄºÍµçѹ

VCE(sat)

µäÐÍÖµ

@IC=20A¡¢

VGE=15V

£¨V£©

1.60

¶þ¼«¹ÜÕýÏòµçѹ

VF

µäÐÍÖµ

@IF=20A¡¢

VGE=0V

£¨V£©

1.75

Çл»¹¦·ò

£¨½µÂ书·ò£©

tf

µäÐÍÖµ

@µç×踺ÔØ

£¨μs£©

0.25

½á¿ÇÈÈ×è

Rth(j-C)

×î´óÖµ

£¨¡æ/W£©

0.48

 

×¢½â£º

[1] ½ØÖÁ2019Äê6Ô £¬¶«Ö¥ÕÉÁ¿µÄÊýÖµ¡££¨²âÊÔÇ°Ì᣺IC=20A¡¢VGE=15V¡¢TC=100¡æ£©

[2] ½ØÖÁ2019Äê6Ô £¬¶«Ö¥ÕÉÁ¿µÄÊýÖµ¡££¨²âÊÔÇ°Ì᣺IF=20A¡¢VGE=0V¡¢TC=100¡æ£©

[3] ¶«Ö¥È·µ±Ç°²úÆ·“GT40RR21”

[4] ½ØÖÁ2019Äê6Ô £¬¶«Ö¥ÕÉÁ¿µÄÊýÖµ¡££¨²âÊÔÇ°Ì᣺VCC=300V¡¢VGG=15V¡¢C=0.33μF¡¢t=5μs¡¢Ta=25¡æ£©

 

¡¾ÍøÕ¾µØͼ¡¿