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VDMOS过温保护功能的实现
Realization of Over-Temperature Protection for VDMOS
【摘要】 提出一种内部集成过温保护功能的VDMOS器件。对传统过温保护原理进行了分析,在此基础上,提出了一种适用于功率器件过温保护的改进电路结构。仿真结果表明,该器件在温度超过174℃时实现自关断,在温度降回142℃时实现自重启。该温度迟滞功能可有效防止热振荡。
【Abstract】 A vertical double-diffusion MOSFET(VDMOS) integrated with over-temperature protection function was proposed.Mechanism of over-temperature protection was analyzed,and an improved over-temperature protection circuit was presented for power device.Simulation results showed that the proposed device could be turned off at 174 ℃ and restart at 142 ℃.This thermal hysteresis function could effectively prevent the device from thermal oscillation.
【关键词】 VDMOS;
过热保护;
可靠性;
热滞回;
【Key words】 VDMOS; Over-temperature protection; Reliability; Thermal hysteresis;
【Key words】 VDMOS; Over-temperature protection; Reliability; Thermal hysteresis;
- 【文献出处】 微电子学 ,Microelectronics , 编辑部邮箱 ,2012年03期
- 【分类号】TN386.1
- 【被引频次】2
- 【下载频次】182