- 专利标题: Trench transistors and methods with low-voltage-drop shunt to body diode
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申请号: US15809863申请日: 2017-11-10
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公开(公告)号: US10128353B2公开(公告)日: 2018-11-13
- 发明人: Mohamed N. Darwish , Jun Zeng , Richard A. Blanchard
- 申请人: MaxPower Semiconductor Inc.
- 申请人地址: US CA San Jose
- 专利权人: MaxPower Semiconductor Inc.
- 当前专利权人: MaxPower Semiconductor Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Groover & Associates PLLC
- 代理商 Robert O. Groover, III; Gwendolyn G. Corcoran
- 主分类号: H01L27/088
- IPC分类号: H01L27/088 ; H01L29/66 ; H01L29/417 ; H01L29/78 ; H01L29/40 ; H01L29/10 ; H01L21/265 ; H01L21/8234 ; H01L29/16 ; H01L29/36 ; H01L29/739 ; H01L29/423 ; H01L29/06 ; H01L29/08
摘要:
Methods and systems for power semiconductor devices integrating multiple trench transistors on a single chip. Multiple power transistors (or active regions) are paralleled, but one transistor has a lower threshold voltage. This reduces the voltage drop when the transistor is forward-biased. In an alternative embodiment, the power device with lower threshold voltage is simply connected as a depletion diode, to thereby shunt the body diodes of the active transistors, without affecting turn-on and ON-state behavior.
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