发明名称 |
Enhancement of the efficiency of energy recovery during spindle motor step-up phases for parking the R/W head of a disk storage device upon external supply failure |
摘要 |
Energy recovery during recirculation phases of the phase windings of a multiphase spindle motor is increased when all the MOSFETs of the output bridge stage associated therewith are turned off (tristated) for charging a hold capacitor. This is accomplished by allowing the recirculation of the motor currents through the same MOSFETs of the output bridge stage that are turned on during the current recirculation phases. Recirculation of the currents and the charging of the hold capacitor takes place through fully saturated power MOSFETs.
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申请公布号 |
US7705548(B2) |
申请公布日期 |
2010.04.27 |
申请号 |
US20070754686 |
申请日期 |
2007.05.29 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
GALBIATI EZIO |
分类号 |
H02K7/14 |
主分类号 |
H02K7/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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