EATON HMCP250W5W
EATON HMCP250W5W
c、門極輸出端
門極輸出Gx端子接電力半導(dǎo)體的門極,當(dāng)SCALE驅(qū)動(dòng)器用15V供電的時(shí)候,門極輸出土15V.負(fù)的門極電壓由驅(qū)動(dòng)器內(nèi)部產(chǎn)生。使用如圖3-6 結(jié)構(gòu)的電路可以實(shí)現(xiàn)開(kāi)通和關(guān)斷的速度的不一樣,增加了用戶使用的靈活性。
d、布局和布線
驅(qū)動(dòng)器應(yīng)該盡可能近的和功率半導(dǎo)體放在一起,這樣從驅(qū)動(dòng)器到電力晶體管的引線就會(huì)盡可能的短,一般來(lái)說(shuō)驅(qū)動(dòng)器的連線盡量不要長(zhǎng) 過(guò)10厘米。同時(shí)一般要求到集電極和發(fā)射極的引線采用絞合線,還有可以在IGBT的門極和發(fā)射極之間連接一對(duì)齊納穩(wěn)壓二極管(15~18V) 來(lái)保護(hù)IGBT不會(huì)被擊穿。
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