医疗仪器、焊机和等离子切割机用电源的市场在不断扩大,这些设备工作在20~50kHz或更高的高频范围。本文讲述了近来开发的、用于这一高频领域的I G BT模块的设计理念。由于在这些应用中工作频段为高频范围,因此器件的开关损耗(开通、关...医疗仪器、焊机和等离子切割机用电源的市场在不断扩大,这些设备工作在20~50kHz或更高的高频范围。本文讲述了近来开发的、用于这一高频领域的I G BT模块的设计理念。由于在这些应用中工作频段为高频范围,因此器件的开关损耗(开通、关断以及反向恢复损耗)是主要的功耗。通过降低背P+层载流子密度(注**——见正文),减小IGBT芯片中元胞的重复步距,并优化IGBT/FWD通态电压与开关损耗之间的折衷关系,可以得到更低的开关损耗。因而,这种新开发的IGBT模块的总功耗比标准IGBT模块(第5代系列)降低了25%。使用这种模块,能进一步提高效率、实现系统的小型化。展开更多
The structural characteristic and manufactural process of SCLB10 series resin insulation transformers are introduced. The measures are described which are made for improving the reliability of inner insulation, reduci...The structural characteristic and manufactural process of SCLB10 series resin insulation transformers are introduced. The measures are described which are made for improving the reliability of inner insulation, reducing the partial discharge, increasing the life of winding, preventing the crack of winding and decreasing the no-load loss. The impulse strength of withstanding short circuit is calculated and verified.展开更多
文摘医疗仪器、焊机和等离子切割机用电源的市场在不断扩大,这些设备工作在20~50kHz或更高的高频范围。本文讲述了近来开发的、用于这一高频领域的I G BT模块的设计理念。由于在这些应用中工作频段为高频范围,因此器件的开关损耗(开通、关断以及反向恢复损耗)是主要的功耗。通过降低背P+层载流子密度(注**——见正文),减小IGBT芯片中元胞的重复步距,并优化IGBT/FWD通态电压与开关损耗之间的折衷关系,可以得到更低的开关损耗。因而,这种新开发的IGBT模块的总功耗比标准IGBT模块(第5代系列)降低了25%。使用这种模块,能进一步提高效率、实现系统的小型化。
文摘The structural characteristic and manufactural process of SCLB10 series resin insulation transformers are introduced. The measures are described which are made for improving the reliability of inner insulation, reducing the partial discharge, increasing the life of winding, preventing the crack of winding and decreasing the no-load loss. The impulse strength of withstanding short circuit is calculated and verified.