Power supply noise reduction by current cancellation circuit

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12249909
APP PUB NO 20240072651A1
SERIAL NO

17895587

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present disclosure describes a circuit having a current source and a load circuit coupled to the current source. The current source can include a transistor electrically coupled to a voltage supply and can be configured to generate a first current with a first current rate-of-change during a time interval, where the first current can be a cancellation current. In addition, the load circuit can be configured to generate a second current with a second current rate-of-change during the same time interval, where the second current can be a load current. The second current rate-of-change can be substantially an inverse of the first current rate-of-change. A power system can include a power management unit configured to generate a power supply voltage at an output, a current source and a load circuit electrically coupled to the output, and a control circuit controls the first current rate-of-change during the time interval.

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Patent Owner(s)

  • APPLE INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alashmouny, Khaled M Sunnyvale, US 5 12
Chiang, Meei-Ling Cupertino, US 14 183
Hu, Zhi San Jose, US 12 27

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