Semiconductor power module and power conversion device
A semiconductor power module which provides reliable overvoltage protection including an overvoltage protection device which functions so that when an overcurrent flows to an IGBT (1), a sink transistor (10) turns on and the IGBT (1) turns off accordingly. As the IGBT (1) turns off to cut off the ov...
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| creator | TANAKA TAKESHI GOURAB MAJUMDAR HIRAMOTO TAKAHIRO |
| description | A semiconductor power module which provides reliable overvoltage protection including an overvoltage protection device which functions so that when an overcurrent flows to an IGBT (1), a sink transistor (10) turns on and the IGBT (1) turns off accordingly. As the IGBT (1) turns off to cut off the overcurrent, a high surge voltage is applied to the IGBT (1). At this time, however, a clamp current flows trough a clamping circuit including a Zener diode (6), a diode (7) and a resistance (8) and part of it is divided to a transistor (Q11), so that a transistor (Q12) turns on and the sink transistor (10) turns off as the result. Accordingly, the clamp current increases a gate voltage of the IGBT (1). Hence, large part of the load current flows in the IGBT (1), and only a little flows to the clamping circuit. Accordingly, overheat of and damage by burning to the clamping circuit will not be caused even if both the overcurrent and overvoltage are applied. |
| format | Patent |
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As the IGBT (1) turns off to cut off the overcurrent, a high surge voltage is applied to the IGBT (1). At this time, however, a clamp current flows trough a clamping circuit including a Zener diode (6), a diode (7) and a resistance (8) and part of it is divided to a transistor (Q11), so that a transistor (Q12) turns on and the sink transistor (10) turns off as the result. Accordingly, the clamp current increases a gate voltage of the IGBT (1). Hence, large part of the load current flows in the IGBT (1), and only a little flows to the clamping circuit. Accordingly, overheat of and damage by burning to the clamping circuit will not be caused even if both the overcurrent and overvoltage are applied.</description><edition>6</edition><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; BASIC ELECTRONIC CIRCUITRY ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; PULSE TECHNIQUE ; SEMICONDUCTOR DEVICES</subject><creationdate>1997</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970304&DB=EPODOC&CC=US&NR=5608595A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970304&DB=EPODOC&CC=US&NR=5608595A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TANAKA; TAKESHI</creatorcontrib><creatorcontrib>GOURAB; MAJUMDAR</creatorcontrib><creatorcontrib>HIRAMOTO; TAKAHIRO</creatorcontrib><title>Semiconductor power module and power conversion device</title><description>A semiconductor power module which provides reliable overvoltage protection including an overvoltage protection device which functions so that when an overcurrent flows to an IGBT (1), a sink transistor (10) turns on and the IGBT (1) turns off accordingly. As the IGBT (1) turns off to cut off the overcurrent, a high surge voltage is applied to the IGBT (1). At this time, however, a clamp current flows trough a clamping circuit including a Zener diode (6), a diode (7) and a resistance (8) and part of it is divided to a transistor (Q11), so that a transistor (Q12) turns on and the sink transistor (10) turns off as the result. Accordingly, the clamp current increases a gate voltage of the IGBT (1). Hence, large part of the load current flows in the IGBT (1), and only a little flows to the clamping circuit. Accordingly, overheat of and damage by burning to the clamping circuit will not be caused even if both the overcurrent and overvoltage are applied.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>PULSE TECHNIQUE</subject><subject>SEMICONDUCTOR DEVICES</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDALTs3NTM7PSylNLskvUijIL08tUsjNTynNSVVIzEuBCgAVlKUWFWfm5ymkpJZlJqfyMLCmJeYUp_JCaW4GeTfXEGcP3dSC_PjU4oLE5NS81JL40GBTMwMLU0tTR2PCKgAuHC17</recordid><startdate>19970304</startdate><enddate>19970304</enddate><creator>TANAKA; TAKESHI</creator><creator>GOURAB; MAJUMDAR</creator><creator>HIRAMOTO; TAKAHIRO</creator><scope>EVB</scope></search><sort><creationdate>19970304</creationdate><title>Semiconductor power module and power conversion device</title><author>TANAKA; TAKESHI ; GOURAB; MAJUMDAR ; HIRAMOTO; TAKAHIRO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US5608595A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>PULSE TECHNIQUE</topic><topic>SEMICONDUCTOR DEVICES</topic><toplevel>online_resources</toplevel><creatorcontrib>TANAKA; TAKESHI</creatorcontrib><creatorcontrib>GOURAB; MAJUMDAR</creatorcontrib><creatorcontrib>HIRAMOTO; TAKAHIRO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TANAKA; TAKESHI</au><au>GOURAB; MAJUMDAR</au><au>HIRAMOTO; TAKAHIRO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Semiconductor power module and power conversion device</title><date>1997-03-04</date><risdate>1997</risdate><abstract>A semiconductor power module which provides reliable overvoltage protection including an overvoltage protection device which functions so that when an overcurrent flows to an IGBT (1), a sink transistor (10) turns on and the IGBT (1) turns off accordingly. As the IGBT (1) turns off to cut off the overcurrent, a high surge voltage is applied to the IGBT (1). At this time, however, a clamp current flows trough a clamping circuit including a Zener diode (6), a diode (7) and a resistance (8) and part of it is divided to a transistor (Q11), so that a transistor (Q12) turns on and the sink transistor (10) turns off as the result. Accordingly, the clamp current increases a gate voltage of the IGBT (1). Hence, large part of the load current flows in the IGBT (1), and only a little flows to the clamping circuit. Accordingly, overheat of and damage by burning to the clamping circuit will not be caused even if both the overcurrent and overvoltage are applied.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY PULSE TECHNIQUE SEMICONDUCTOR DEVICES |
| title | Semiconductor power module and power conversion device |
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