Invention Grant
US08232790B2 Architecture for controlling a dual polarity, single inductor boost regulator used as a dual polarity supply in a hard disk drive dual stage actuator (DSA) device
有权
用于控制双极性单电感升压稳压器的架构，用作硬盘驱动器双级执行器（DSA）器件中的双极性电源
- Patent Title: Architecture for controlling a dual polarity, single inductor boost regulator used as a dual polarity supply in a hard disk drive dual stage actuator (DSA) device
- Patent Title (中): 用于控制双极性单电感升压稳压器的架构，用作硬盘驱动器双级执行器（DSA）器件中的双极性电源
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Application No.: US12580157Application Date: 2009-10-15
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Publication No.: US08232790B2Publication Date: 2012-07-31
- Inventor: Kong Yin Leong , Soon Hwei Tan
- Applicant: Kong Yin Leong , Soon Hwei Tan
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Asia Pacific Pte Ltd.
- Current Assignee: STMicroelectronics Asia Pacific Pte Ltd.
- Current Assignee Address: SG Singapore
- Agency: Hogan Lovells US LLP
- Main IPC: G05F1/40
- IPC: G05F1/40
Abstract:
A dual supply circuit uses a dual feedback control, single inductor, dual polarity boost architecture with a low side power FET for end of current recirculation sensing. A dual feedback system tracks the output voltage variations and a low side power FET end of current recirculation sensing utilizes the internal current limit sensing system. Logic defining the state of operations allows the regulator to operate in both single and dual mode to cater to wide application ranges. The positive boost regulator can be operated in a buck mode making the output voltage constant with high input supply.
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