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IGBT自发明至今已将近15年,它仍一直有望在中等电压范围(400～600V)的各种应用中取代MOSFET功率管.但它们迄今还未能如愿以偿,基本原因有二:首先是IGBT的速度还不够快,不足以应付许多应用;其次,尽管有迹象表明IGBT系统的成本应当更低,但实际上并不那么经济实惠——尤其是与MOSFET的极低价格相比更是如此.MOSFET能胜任许多应用,其价格在过去几年里已下降得很低.
IGBTs have been around for almost 15 years since their invention, and have been expected to replace MOSFET power tubes for a variety of applications in the medium voltage range (400-600V), but they have so far failed to do so for two basic reasons: first is the speed of the IGBT Not fast enough to handle many applications; and secondly, while there are indications that the cost of the IGBT system should be lower, it is actually less economical - especially when compared to the very low price of MOSFETs Competent for many applications, its price has dropped very low in the past few years.