Invention Grant
US08283907B1 Boost regulator with pulse frequency mode of operation having substantially constant percentage output ripple and frequency
有权
具有脉冲频率工作模式的升压调节器具有基本恒定的输出纹波和频率百分比
- Patent Title: Boost regulator with pulse frequency mode of operation having substantially constant percentage output ripple and frequency
- Patent Title (中): 具有脉冲频率工作模式的升压调节器具有基本恒定的输出纹波和频率百分比
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Application No.: US12592260Application Date: 2009-11-20
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Publication No.: US08283907B1Publication Date: 2012-10-09
- Inventor: Vinit Jayaraj
- Applicant: Vinit Jayaraj
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Alan A. R. Cooper; Wade James Brady, III; Frederick J. Telecky, Jr.
- Main IPC: G05F1/44
- IPC: G05F1/44
Abstract:
A method includes receiving an input voltage at a voltage regulator and generating an output voltage using the voltage regulator, which includes an inductor. The method also includes controlling a current through the inductor using a current limit reference and modulating the current limit reference based on the input voltage and the output voltage. Modulating the current limit reference could include modulating a reference current based on a product of first and second input currents. The first input current may be based on the output voltage, and the second input current may be based on a difference between the output and input voltages. The voltage regulator may operate in a pulse frequency mode associated with a repetition rate. The repetition rate and a percentage ripple associated with the output voltage may be substantially constant over variations in the input voltage and variations in the output voltage.
Information query
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