首页>
外国专利>
Disk drive comprising a pulse width modulated demand limit circuit for enhancing power management during spin-down
Disk drive comprising a pulse width modulated demand limit circuit for enhancing power management during spin-down
展开▼
机译:磁盘驱动器包括一个脉宽调制的需求限制电路,用于在降速期间增强电源管理
展开▼
页面导航
摘要
著录项
相似文献
摘要
A disk drive is disclosed comprising a head, a disk and a spindle motor for rotating the disk. An internal supply voltage is generated from a back EMF (BEMF) voltage across the windings of the spindle motor. The internal supply voltage is applied to a voice coil motor for use in parking the head during a spin-down mode. The internal supply voltage is compared to a threshold in order to activate a demand limit control signal. A periodic signal periodically disconnects the internal supply voltage from the VCM while the demand limit control signal is active.
展开▼