发明授权
US5557550A Junction temperature status sensing and reduction for integrated power
devices, such as a head positioning system in a magnetic disc drive
失效
用于集成功率器件的结温状态感测和还原，例如磁盘驱动器中的头部定位系统
- 专利标题： Junction temperature status sensing and reduction for integrated power devices, such as a head positioning system in a magnetic disc drive
- 专利标题（中）： 用于集成功率器件的结温状态感测和还原，例如磁盘驱动器中的头部定位系统
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申请号： US212201申请日： 1994-03-11
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公开(公告)号： US5557550A公开(公告)日： 1996-09-17
- 发明人: Daniel R. Vigil , LeRoy A. Volz
- 申请人： Daniel R. Vigil , LeRoy A. Volz
- 申请人地址： CA Scotts Valley
- 专利权人： Seagate Technology, Inc.
- 当前专利权人： Seagate Technology, Inc.
- 当前专利权人地址： CA Scotts Valley
- 主分类号： G11B5/55
- IPC分类号： G11B5/55 ; G11B19/04 ; H02H5/04 ; H02H9/00 ; G08B21/00
摘要：
Junction overheating in an actuator controller IC used to position read/write heads in a magnetic disc storage device is prevented by temporarily decreasing actuator controller IC output signal duty cycle when excessive junction temperature is present. The present invention includes means for monitoring and comparing actuator controller IC junction temperature to a reference temperature, and for outputting a warning signal when junction temperature exceeds the reference temperature by too large a margin. The present invention introduces a time delay into the output signal from the actuator controller IC when the warning signal is present. The time delay may be fixed or variable in duration, and may be varied progressively in duration. The time delay may be generated using circuitry, software, firmware, or a combination thereof.