Active compensation device for providing electromagnetic wave noise data
US-2024405545-A1 · Dec 5, 2024 · US
Power supply with continuous spread-spectrum switching signal
US9350232B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9350232-B2 |
| Application number | US-201313854805-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2013 |
| Priority date | Mar 14, 2013 |
| Publication date | May 24, 2016 |
| Grant date | May 24, 2016 |
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Abstract
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A switched-mode power supply with reduced electromagnetic interference (EMI) is described. This switched-mode power supply includes a modulation circuit that continuously frequency modulates a control signal over a bandwidth associated with a spread-spectrum modulation signal. By frequency modulating the control signal in the switched-mode power supply, spectral content associated with a modulated switching signal is spread evenly over the bandwidth, thereby reducing the EMI.
First claim
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What is claimed is: 1. A switched-mode power supply, comprising: a control circuit configured to provide a control signal; a modulation circuit, electrically coupled to the control circuit, configured to provide a modulated switching signal by frequency modulating the control signal over a bandwidth using a spread-spectrum modulation signal so that spectral content associated with the modulated switching signal is spread over the bandwidth in the spread-spectrum modulation signa…
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Electricity · mapped topic
Electricity · mapped topic
- H02M1/44Primary
Electricity · mapped topic
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- What does patent US9350232B2 cover?
- A switched-mode power supply with reduced electromagnetic interference (EMI) is described. This switched-mode power supply includes a modulation circuit that continuously frequency modulates a control signal over a bandwidth associated with a spread-spectrum modulation signal. By frequency modulating the control signal in the switched-mode power supply, spectral content associated with a modula…
- Who is the assignee on this patent?
- Apple Inc
- What technology area does this patent fall under?
- Primary CPC classification H02M1/44. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue May 24 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).