Power supply control device
US-2024305205-A1 · Sep 12, 2024 · US
Switching power supply device
US9184663B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9184663-B2 |
| Application number | US-201313940471-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 12, 2013 |
| Priority date | Jul 13, 2012 |
| Publication date | Nov 10, 2015 |
| Grant date | Nov 10, 2015 |
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Abstract
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In some aspects of the invention, a load state detecting circuit is configured so that a threshold voltage for determining the size of a load of a DC-DC converter is set in the load state detecting circuit based on a maximum value of an output voltage of a power factor correction converter in an operation-stopped state of the power factor correction converter, so that the load state detecting circuit outputs an operation-enable signal when a feedback voltage indicating the size of the load of the DC-DC converter exceeds the threshold voltage. Thus, by way of some aspects of the invention, it is possible to provide a switching power supply device which can control enabling and stopping operation of a power factor correction converter reliably in accordance with a load state of a DC-DC converter obtaining a predetermined DC output voltage by switching an output voltage of the correction converter.
First claim
Opening claim text (preview).
What is claimed is: 1. A switching power supply device comprising: a power factor correction converter which obtains a DC voltage by switching an input AC voltage; a DC-DC converter which obtains a predetermined DC output voltage by switching an output voltage of the power factor correction converter; and a load state detecting circuit which outputs an operation-enable signal for the power factor correction converter in accordance with a load state of the DC-DC converter to t…
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Electricity · mapped topic
- H02M3/33507Primary
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9184663B2 cover?
- In some aspects of the invention, a load state detecting circuit is configured so that a threshold voltage for determining the size of a load of a DC-DC converter is set in the load state detecting circuit based on a maximum value of an output voltage of a power factor correction converter in an operation-stopped state of the power factor correction converter, so that the load state detecting c…
- Who is the assignee on this patent?
- Fuji Electric Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02M3/33507. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 10 2015 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).