亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频

蟲蟲首頁(yè)| 資源下載| 資源專輯| 精品軟件
登錄| 注冊(cè)

您現(xiàn)在的位置是:蟲蟲下載站 > 資源下載 > 技術(shù)資料 > IGBT圖解

IGBT圖解

  • 資源大小:9541 K
  • 上傳時(shí)間: 2022-06-20
  • 上傳用戶:wangshoupeng199
  • 資源積分:2 下載積分
  • 標(biāo)      簽: igbt

資 源 簡(jiǎn) 介

le flows through MOS channel while Ih flows across PNP transistor Ih= a/(1-a) le, IE-le+lh=1/(1-a)' le Since IGBT has a long base PNP, a is mainly determined by ar si0 2

ar= 1/cosh(1/La), La: ambipolar diff length a-0.5 (typical value)

p MOSFET channel current (saturation), le=U"Cox"W(2"Lch)"(Vc-Vth)

le Thus, saturated collector current Ic, sat=1/(1-a)"le=-1/(1-a)"UCox"W/(2Lch)"(Vo-Vth)2

Also, transconductance gm, gm= 1/(1-a)"u' Cox W/Lch*(Vo-Vth)

Turn-On

1. Inversion layer is formed when Vge>Vth

2. Apply positive collector bias, +Vce

3. Electrons flow from N+ emitter to N-drift layer providing the base current for the PNP transistor

4. Since J1 is forward blased, hole carriers are injected from the collector (acts as an emitter).

5. Injected hole carriers exceed the doping level of N-drift region (conductivity modulation)

. Turn-Off

1. Remove gate bias (discharge gate)

2. Cut off electron current (base current, le, of pnp transistor)


相 關(guān) 資 源

主站蜘蛛池模板: 汕头市| 固原市| 台东市| 张掖市| 搜索| 莆田市| 夏河县| 若尔盖县| 乐昌市| 都兰县| 涿州市| 高安市| 崇文区| 铅山县| 玉门市| 错那县| 孝感市| 会昌县| 襄城县| 景谷| 湟中县| 舟山市| 青神县| 慈溪市| 湾仔区| 合川市| 芦溪县| 澎湖县| 普陀区| 博罗县| 邹城市| 会昌县| 曲麻莱县| 玉田县| 什邡市| 丰镇市| 万年县| 铁力市| 永城市| 大化| 进贤县|