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公开(公告)号：US20180309431A1
公开(公告)日：2018-10-25
申请号：US16023643
申请日：2018-06-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
CPC classification number: H03K5/1565 , H02M3/07
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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公开(公告)号：US20190267979A1
公开(公告)日：2019-08-29
申请号：US16410508
申请日：2019-05-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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公开(公告)号：US20170257087A1
公开(公告)日：2017-09-07
申请号：US15598339
申请日：2017-05-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
CPC classification number: H03K5/1565 , H02M3/07
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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Patent Agency Ranking
公开(公告)号：US09692403B2
公开(公告)日：2017-06-27
申请号：US14927929
申请日：2015-10-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry
CPC classification number: H03K7/08 , H03K5/1565
Abstract: A clock generator includes a duty cycle correction circuit. The duty cycle correction circuit includes a duty cycle detector. The duty cycle detector, includes a first programmable delay element and a controller. The first programmable delay element is configured to delay a clock signal. The controller is configured to vary an amount of delay applied to the clock signal by the first programmable delay element, and to apply a delayed version of the clock signal, provided by the first programmable delay element, to locate an edge of a different version of the clock signal and measure time during which the different version of the clock is high. The controller is also configured to generate a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock signal based on measured time during which the different version of the clock is high.
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公开(公告)号：US10547297B2
公开(公告)日：2020-01-28
申请号：US16410508
申请日：2019-05-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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公开(公告)号：US10033365B2
公开(公告)日：2018-07-24
申请号：US15598339
申请日：2017-05-18
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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公开(公告)号：US09780768B2
公开(公告)日：2017-10-03
申请号：US14927949
申请日：2015-10-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
CPC classification number: H03K5/1565 , H02M3/07
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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公开(公告)号：US10291218B2
公开(公告)日：2019-05-14
申请号：US16023643
申请日：2018-06-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mohammad Elbadry , Robert Floyd Payne , Gerd Schuppener
Abstract: A duty cycle correction circuit includes a charge pump and a controller. The charge pump includes a current source, a first output, and a second output. The charge pump routes current from the current source to the first output during a positive portion of a clock, and routes current from the current source to the second output during a negative portion of the clock. The controller compares charge accumulated from the first output to charge accumulated from the second output over a plurality of clock cycles to determine which of the positive portion of the clock and the negative portion of the clock is longer. The controller also generates a digital value that indicates an amount of adjustment to apply to a duty cycle of the clock based on which of the positive portion of the clock and the negative portion of the clock is longer.
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