Invention Grant
US5977569A Bidirectional lateral insulated gate bipolar transistor having increased voltage blocking capability 失效
具有增加的电压阻断能力的双向横向绝缘栅双极晶体管

Bidirectional lateral insulated gate bipolar transistor having increased
voltage blocking capability
Abstract:
A bidirectional lateral insulated gate bipolar transistor (IGBT) includes two gate electrodes. The IGBT can conduct current in two directions. The IGBT relies on a double RESURF structure to provide high voltage blocking in both directions. The IGBT is symmetrical, having an N-type drift region in contact with an oxide layer. A P-type region is provided above the N-type drift region, having a portion more heavily doped with P-type dopants. The double RESURF structure can be provided by a buried oxide layer, a floating doped region, or a horizontal PN junction. The IGBT can be utilized in various power operations, including a matrix switch or a voltage source converter.
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