Invention Grant
- Patent Title: Phase lock loop pre-charging system and method
- Patent Title (中): 锁相环预充电系统及方法
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Application No.: US12641121Application Date: 2009-12-17
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Publication No.: US08174332B1Publication Date: 2012-05-08
- Inventor: Carel J. Lombaard , Eugene O'Sullivan , Paul Walsh
- Applicant: Carel J. Lombaard , Eugene O'Sullivan , Paul Walsh
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H03B5/00
- IPC: H03B5/00

Abstract:
A phase lock loop pre-charging system and method are described. In one embodiment, a phase lock loop pre-charge system includes a bias component for generating a pre-charge voltage, and an activation component for activating the bias component. In one exemplary implementation the pre-charge voltage is utilized to facilitate pre-charging of a phase lock loop voltage controlled oscillator. In one embodiment, the bias component includes replica bias components that track the voltage controlled oscillation control voltage over varying process, voltage and temperature characteristics. The phase lock loop pre-charging systems and methods can be utilized to reduce lock time for a circuit.
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