17895587. POWER SUPPLY NOISE REDUCTION BY CURRENT CANCELLATION CIRCUIT simplified abstract (Apple Inc.)
Contents
POWER SUPPLY NOISE REDUCTION BY CURRENT CANCELLATION CIRCUIT
Organization Name
Inventor(s)
Meei-Ling Chiang of Cupertino CA (US)
Khaled M. Alashmouny of Sunnyvale CA (US)
POWER SUPPLY NOISE REDUCTION BY CURRENT CANCELLATION CIRCUIT - A simplified explanation of the abstract
This abstract first appeared for US patent application 17895587 titled 'POWER SUPPLY NOISE REDUCTION BY CURRENT CANCELLATION CIRCUIT
Simplified Explanation
The circuit described in the patent application includes a current source and a load circuit coupled to the current source. The current source generates a cancellation current with a certain rate of change, while the load circuit generates a load current with an inverse rate of change during the same time interval.
- The circuit includes a transistor connected to a voltage supply to generate the cancellation current.
- The load circuit is configured to generate the load current with an inverse rate of change compared to the cancellation current.
- A power management unit in a power system controls the current rate of change during the time interval.
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- Potential Applications
- Power management systems
- Electronic devices with efficient power usage
- Problems Solved
- Efficient power generation and usage
- Minimizing power wastage
- Benefits
- Improved power efficiency
- Better control over power supply
- Reduced energy costs
Original Abstract Submitted
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.
