High-temperature,high-power converters have gained importance in industrial applications given their ability to operate in adverse environments,such as in petroleum exploration,multi-electric aircrafts,and electric ve...High-temperature,high-power converters have gained importance in industrial applications given their ability to operate in adverse environments,such as in petroleum exploration,multi-electric aircrafts,and electric vehicles.SiC metaloxide-semiconductor field-effect transistor(MOSFET),a new,wide bandgap,high-temperature device,is the key component of these converters.In this study,the static and dynamic characteristics of the SiC MOSFET,half-bridge module,are investigated at the junction temperature of 180℃.A simplified experimental method is then proposed pertaining to the power operation of the SiC module at 180℃.This method is based on the use of a thermal resistance test platform and is proven convenient for the study of heat dissipation characteristics.The high-temperature characteristics of the module are verified based on the conducted experiments.Accordingly,a 100 kW high-temperature converter is built,and the test results show that the SiC converter can operate at a junction temperature of 180℃in a stable manner in compliance with the requirements of high-temperature,high-power applications.展开更多
加利福尼亚州米尔皮塔斯（MILPITAS,CA）凌力尔特公司（Linear Technology Corporation）推出1.5 W输出的DC/DC微型模块（Module）转换器LTM8047和LTM8048,这两款器件具有725 V DC电流隔离,采用9 mm×11.25 mm×4.92 mm BGA（...加利福尼亚州米尔皮塔斯（MILPITAS,CA）凌力尔特公司（Linear Technology Corporation）推出1.5 W输出的DC/DC微型模块（Module）转换器LTM8047和LTM8048,这两款器件具有725 V DC电流隔离,采用9 mm×11.25 mm×4.92 mm BGA（球栅阵列）封装。展开更多
基金supported by the National Key R&D Program of China (grant no. 2017YFB0903303)
文摘High-temperature,high-power converters have gained importance in industrial applications given their ability to operate in adverse environments,such as in petroleum exploration,multi-electric aircrafts,and electric vehicles.SiC metaloxide-semiconductor field-effect transistor(MOSFET),a new,wide bandgap,high-temperature device,is the key component of these converters.In this study,the static and dynamic characteristics of the SiC MOSFET,half-bridge module,are investigated at the junction temperature of 180℃.A simplified experimental method is then proposed pertaining to the power operation of the SiC module at 180℃.This method is based on the use of a thermal resistance test platform and is proven convenient for the study of heat dissipation characteristics.The high-temperature characteristics of the module are verified based on the conducted experiments.Accordingly,a 100 kW high-temperature converter is built,and the test results show that the SiC converter can operate at a junction temperature of 180℃in a stable manner in compliance with the requirements of high-temperature,high-power applications.
文摘凌力尔特公司（Linear Technology Corporation）推出完整的3ADC／DC微型模块（μModule）器系统LTM8033。该器件除了有内置电感器、DC／DC转换器和支持电路外，它还含有一个EMI（电磁干扰）滤波器，因而使其在EMI指标上远远优于EN55022 Class B标准的要求。该电路内置于一个小外形11．25mm×15mm×4．32mm封闭式塑料LGA（焊盘网格阵列）封装，而重量仅为2．3g。
文摘加利福尼亚州米尔皮塔斯（MILPITAS,CA）凌力尔特公司（Linear Technology Corporation）推出1.5 W输出的DC/DC微型模块（Module）转换器LTM8047和LTM8048,这两款器件具有725 V DC电流隔离,采用9 mm×11.25 mm×4.92 mm BGA（球栅阵列）封装。
文摘此振荡器专门针对恒压恒流(CV-CC)控制、频率抖动(Frequency Shuffling)技术。采用电流模脉宽调制控制方案的电池充电芯片设计,锯齿波信号的线性度较好,当负载电路减小时,自动进入Burst Mode状态提高系统的效率。整个电路基于1.0μm40 V CMOS工艺设计,通过Hspice完成了整体电路前仿真验证和后仿真,仿真结果表明,振荡电路的性能较好,可广泛应用在PWM等各种电子电路中。
