Csmc Technologies Fab2 Co., Ltd.

Jing Zhou

Nan Zhang

Hao Wang

Shuming Guo

Yong Huang

Cheng Zhou

Zhan Gao

Zhijin Li

Maoqian Zhu

Lin Wu

The present application relates to a resistance simulation method for a power device, comprising: establishing an equivalent resistance model of a power device, wherein the connection relationship of N fingers is equivalent to N resistors Rconnected in parallel, input ends of adjacent resistors Rare connected by means of a resistor R, output ends of adjacent resistors Rare connected by means of a resistor R, and R=R*N+R+R, wherein Rand Rare respectively resistances of a source metal strip and a drain metal strip, Ris a metal resistor of a first intermediate layer connecting one source region to the source metal strip, Ris a metal resistor of a second intermediate layer connecting one drain region to the drain metal strip, and Ris the channel resistance of the power device; and calculating the resistance of the equivalent resistance model as the resistance of the power device.

Power device and resistance simulation method therefor, and power device simulation tool

A low dropout linear regulator circuit comprises a voltage reference source module (), an error amplifier (), a reference voltage determining module (), a power transmission device () and a feedback module (); wherein the voltage reference source module () provides a reference voltage for the error amplifier (), the reference voltage determining module () controls an enablement of the error amplifier () according to whether the voltage reference source module () is completely started, the error amplifier () controls ON/OFF of the power transmission device () according to the reference voltage provided by the voltage reference source module () and a feedback voltage provided by the feedback module (). A chip having the above low dropout linear regulator circuit and a electronic device having the above chip are provided.

Low drop-out regulator circuit, chip and electronic device

Growing community of inventors

Wuxi, China

Jing Zhou