Presentation 2007/6/18
Accurate Physical DC and AC Models of High-Voltage LDMOSFETs
Ki-Soo Nam, Pyong-Su Kwag, Han-Sub Yoon, Oh-Kyong Kwon,
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Abstract(in English) Accurate physical DC and AC models of 60V lateral double diffused MOSFETs (LDMOSFETs) are presented in this paper. These models are based on physical analysis considering device geometry, carrier distributions, mobility degradation effect, the effect of impact ionization, and the phenomena of the electron accumulation. In DC model, we divide LDMOSFETs into two regions to obtain the physical conduction model: one is channel region and the other is drift region. The channel region model is modified BSIM3v3 model and the drift region is employed voltage dependent resistance model considering electron distributions, the depth of current path, and the depleted length in the drift region. In AC model, we focus on the electron distributions in the drift region. The model is voltage dependent capacitance model considering the electron accumulation at the gate edge and the depletion in the drift region. The modeling results are compared with measured I-V and C-V characteristics and show good agreements with the measured results of devices within 10% error.
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Keyword(in English) LDMOSFET / physical model / DC model / AC model
Paper # ED2007-124,SDM2007-129
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Committee ED
Conference Date 2007/6/18(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
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Title (in English) Accurate Physical DC and AC Models of High-Voltage LDMOSFETs
Sub Title (in English)
Keyword(1) LDMOSFET
Keyword(2) physical model
Keyword(3) DC model
Keyword(4) AC model
1st Author's Name Ki-Soo Nam
1st Author's Affiliation Division of Electrical and Computer Engineering, Hanyang University()
2nd Author's Name Pyong-Su Kwag
2nd Author's Affiliation Division of Electrical and Computer Engineering, Hanyang University
3rd Author's Name Han-Sub Yoon
3rd Author's Affiliation Division of Electrical and Computer Engineering, Hanyang University
4th Author's Name Oh-Kyong Kwon
4th Author's Affiliation Division of Electrical and Computer Engineering, Hanyang University
Date 2007/6/18
Paper # ED2007-124,SDM2007-129
Volume (vol) vol.107
Number (no) 110
Page pp.pp.-
#Pages 4
Date of Issue