发明名称 |
Circuit and method for protecting emergency head-retract capacitor in a hard disk drive |
摘要 |
A protection circuit for a capacitor comprises a voltage pump that selectively charges the capacitor. A current source selectively charges the capacitor. A controller compares a charging voltage to a threshold charging voltage and selects at least one of the voltage pump and the current source based on the comparison.
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申请公布号 |
US7436618(B1) |
申请公布日期 |
2008.10.14 |
申请号 |
US20060485597 |
申请日期 |
2006.07.12 |
申请人 |
MARVELL INTERNATIONAL LTD. |
发明人 |
RANA SAKTI;ZHANG YAYUE;CHUI SIEW YONG |
分类号 |
G11B21/02;G11B21/12;H01G2/12;H02J7/00;H02J7/04;H02M3/07 |
主分类号 |
G11B21/02 |
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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