【摘要】 讨论高压LDMOS阈值电压的温度特性,并给出了它的温度系数计算公式.根据计算结果,可以得到以下结论:通过提高沟道掺杂浓度或减少栅氧化层能够降低阈值电压随温度的变化.阈值电压的温度系数可以用温度的线性表达式来计算,从而可以得出功率LDMOS阈值电压的温度系数最优化分析.更多还原

【Abstract】 The paper has analyzed temperature characteristics on high voltage power LDMOST’s threshold voltage and given a calculation formula of its temperature coefficient from computing results.It can reduce the change of threshold voltage with the temperature by enhance the consistence of chaneel intermingle or depress the thick of cxiadtion.It may be concluded that a threshold voltage temperature coefficient of a high voltage power LDMOST is a constant at a wide temperature range,and a linear expression can be used to describe its temperature characteristics.At last,we can get the optimization analysis of threshold voltage temperature coefficient for power LDMOSTs.更多还原