公开(公告)号：US07408313B1

公开(公告)日：2008-08-05

申请号：US11321766

申请日：2005-12-28

申请人： Chan Sang Kong ,  Kien Beng Tan ,  Xiao Yu Miao

发明人： Chan Sang Kong ,  Kien Beng Tan ,  Xiao Yu Miao

IPC分类号： H02P3/00 ,  H03K3/00

CPC分类号： G11B5/09 ,  G11B5/022

摘要： A circuit is adapted to activate a writer head of a data storage media drive during both the boost periods as well as the steady state periods. The current supplied to the writer head during the boost periods exceeds the steady state current and flows between positive and negative voltage supplies so as to provide the required magnetic flux change in the inductor disposed in the write head. During the steady state periods, a switch circuit is turned on to provide a second current path across the writer head. During the steady state periods, the current flows between the positive voltage supply and the ground to reduce power consumption. The switch circuit is turned off during the boost periods.

摘要翻译： 电路适于在升压期间和稳定状态期间激活数据存储介质驱动器的写入头。 在升压期间提供给写入头的电流超过稳态电流，并且在正和负电压源之间流动，以便在设置在写入头中的电感器中提供所需的磁通量变化。 在稳定状态期间，开关电路导通以提供穿过写入头的第二电流路径。 在稳态期间，电流在正电源和地之间流动，以降低功耗。 开关电路在升压期间关闭。