日立开关电源用功率MOS场效应晶体管和控制集成电路Renesas

简介：日立开关电源用功率MOS场效应晶体管和控制集成电路

问：1、开关电源功率MOS场效应晶体管工作在高频(20KHz/5A)、大电流时，其散热问题如何解决？
2、有无高频特性好、热量小的MOS场效应管？
谢谢！
答： The most important characteristics of this condition is On
resistance RDS(on). So you must choose Low RDS(on) MOSFET.

If the high frequency operation, you must choose Low Qgd  and Low thermal resistance type MOSFET. Because switchin

问：mosfet如何解决低驱动损耗和低开关损耗？
答： If the low voltage drive use. You must choose low voltage drive MOSFET. See below.

1.Logic level MOSFET
  4V Drive or 2.5V Drive
  You can see data sheet RDS(on) test condition.
  and see the characteristi

问：请推荐一些用于线路驱动的放大器，输出电流大于500mA，工作频率在40kHz-30MHz.
答： Could you tell us.which application ?
Which Vdss level do you request ?

问：在3KW~10KW的开关电源(输入3相380V)上,日立推荐什么MOSFET?
答： 500V Voltage series.

We recommend currently device that is 2SK1518(500V/20A,0.22ohm),2SK1522(500V/50A,0.085ohm).
Then, New device H5N5004PL(500V/50A,0.09ohm) and H5N5005PL(500V/60A,0.07ohm)

问：请问日立的功率MOS场效应晶体管和控制集成电路在医用设备电源的应用效果和范围。能否提供300W至500W的功率。控制电路和保护电路的功能有哪些。
答： Yes, applicable to medical equipment. power of 300W to 500W possible

问：在使用开关电源供电地情况下，视频运放在使用中非常容易出现自激现象。如何克服自激现象。谢谢！
答： (1) In case of  SW mode power supply, it will be  solved by compensation  of the phase,
Capacitor will be used  between input and output for error amplifier  

问：请问日立开关电源用功率MOS场效应晶体管和控制集成电路是否可用在汽车领域？如果有，请指出用在什么地方？
答： Yes, Hitachi mosfets can be used in automobile system, such as anti-lock brake ststem, electrical power steering system, vehicle stability control sysem

问：日立的新封装的LFPAK技术在同类的厂商中是专利吗？
答： Yes Hitachi possesses that patent. Actually Hitachi has many technology patents in mosfets and control ICs

问：这些产品适合UPS吗？请具体谈谈？
答： Yes.

问：怎样获取贵公司产品用于小型马达驱动的资料？
答： We have no IC for samll motor application and no material.