Semiconductor switch control device

Semiconductor switch control device

申请(专利)号： US20090458434

专利号： US8243407B2 主分类号： H02H3/00 申请权利人： IKUO FUKAMI 公开国代码： US 优先权国家： JP

摘 要：

A semiconductor switch control device includes a current detecting unit that detects a current that flows in a

semiconductor switch, a voltage detecting unit that detects a voltage, and a

temperature detecting unit that detects a temperature. A transient thermal

resistance value providing unit provides a transient thermal resistance value

Z_th in accordance with an elapsed time from reception of an excess voltage signal to a computing unit. A temperature detecting unit detects an initial temperature T_J0

when an excess voltage is

produced. The computing unit calculates a temperature of the semiconductor switch by a following expression when a detected current value is represented by I_ds, and a detected voltage value is represented by

V_ds: (expression):

temperature of the semiconductor switch T_J=I_ds×V_ds×Z_th+T_J0.

申请日： 2009-07-13 公开公告日： 2012-08-14

分类号： H02H3/00 发明设计人： IKUO FUKAMI 申请国代码： US

优先权： 20080819 JP 2008-210648

摘 要 附 图：

主权项：

1. A semiconductor switch control device that performs switching control of a semiconductor switch t

权 利 要 求 说 明 书

【Semiconductor switch control device】的权利说明书内容是......请下载后查看