Invention Grant
- Patent Title: Subscriber line interface circuit with intra-operational state selectable supply
- Patent Title (中): 用户线接口电路，具有工作状态可选择供电
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Application No.: US12910782Application Date: 2010-10-23
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Publication No.: US08467520B2Publication Date: 2013-06-18
- Inventor: Yan Zhou , Sean A. Lofthouse , Jonathan C. Grigsby
- Applicant: Yan Zhou , Sean A. Lofthouse , Jonathan C. Grigsby
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: O'Keefe, Egan, Peterman & Enders LLP.
- Main IPC: H04M1/00
- IPC: H04M1/00
Abstract:
A method of generating a plurality of supply voltages for a plurality of subscriber line channels includes generating a first target VBAT value for a first associated linefeed driver from a first VBAT control. A second target VBAT value for a second associated linefeed driver is generated from a second VBAT control. A selected target VBAT value is generated based upon the first and second target VBAT values. A magnitude of the selected target VBAT value is not less than any maximum of a magnitude of the first and second target VBAT values. A switching regulator is controlled to provide a first generated VBAT corresponding to the selected target VBAT value, wherein the switching regulator provides a second generated VBAT having a pre-determined proportional relationship (p) to the first generated VBAT.
Public/Granted literature
- US20120098333A1 Subscriber Line Interface Circuit with Intra-Operational State Selectable Supply Public/Granted day:2012-04-26
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