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公开(公告)号：US20210194605A1
公开(公告)日：2021-06-24
申请号：US17127055
申请日：2020-12-18
Applicant: Infineon Technologies AG
Inventor： Siegfried Albel , Michael Aichner , Reinhard-Wolfgang Jungmaier , Dennis Noppeney , Christoph Rumpler , Saverio Trotta
Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.
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公开(公告)号：US11316597B2
公开(公告)日：2022-04-26
申请号：US17127055
申请日：2020-12-18
Applicant: Infineon Technologies AG
Inventor： Siegfried Albel , Michael Aichner , Reinhard-Wolfgang Jungmaier , Dennis Noppeney , Christoph Rumpler , Saverio Trotta
IPC: H03B5/12 , H04B17/21 , H03K5/00 , H03K3/017 , H03M1/12 , H04L7/00 , H03K19/20 , H04L7/033 , H03L7/197
Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.
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公开(公告)号：US10911165B1
公开(公告)日：2021-02-02
申请号：US16724888
申请日：2019-12-23
Applicant: Infineon Technologies AG
Inventor： Siegfried Albel , Michael Aichner , Reinhard-Wolfgang Jungmaier , Dennis Noppeney , Christoph Rumpler , Saverio Trotta
Abstract: In accordance with an embodiment, a method includes: receiving, by an adjustable frequency doubling circuit, a first clock signal having a first clock frequency; using the adjustable frequency doubling circuit, generating a second clock signal having a second clock frequency that is twice the first clock frequency; measuring a duty cycle parameter of the second clock signal, where the duty cycle parameter is dependent on a duty cycle of the first clock signal or a duty cycle of the second clock signal; and using the adjustable frequency doubling circuit, adjusting the duty cycle of the first clock signal or the second clock signal based on the measuring.
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公开(公告)号：US10574258B1
公开(公告)日：2020-02-25
申请号：US16387050
申请日：2019-04-17
Applicant: Infineon Technologies AG
Inventor： Siegfried Albel , Matthias Bogus , Christian Heiling , Jaafar Mejri , Markus Zannoth
Abstract: A method includes applying a current to an input pin of an integrated circuit; converting an analog signal at the input pin to a digital stream using a Sigma-Delta modulator; converting the digital stream to a first digital output signal proportional to the analog signal in a first input range between a first analog signal value and a second analog signal value, where the first input range corresponds to a pre-determined range of the analog signal smaller than a full-scale input range of the analog signal; converting the digital stream to a second output signal; comparing the second output signal to a first threshold corresponding to a third analog signal value at the input pin that is outside of the first input range; and providing an indication of an open circuit condition at the input pin when the second output signal crosses the first threshold.
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