Lighting apparatus and luminaire
US-2016066388-A1 · Mar 3, 2016 · US
Switching converter
US9401649B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9401649-B2 |
| Application number | US-201514928374-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 30, 2015 |
| Priority date | Nov 4, 2014 |
| Publication date | Jul 26, 2016 |
| Grant date | Jul 26, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
When a current detection voltage V CS that corresponds to a voltage drop across a detection resistor R CS exceeds a first threshold value V ADIM , a current limit comparator asserts a reset pulse. A zero current detection circuit generates a set pulse configured as an instruction to turn on a switching transistor. A logic circuit generates an output pulse S 14 according to the reset pulse and the set pulse. When the current detection signal V CS exceeds a second threshold value V TH , a second comparator asserts a comparison signal. An abnormal state detection period is set to a first time period from a time point at which the switching transistor turns on. When the comparison signal is asserted in the abnormal state detection period, an abnormal state detection circuit judges that an abnormal state has occurred.
First claim
Opening claim text (preview).
What is claimed is: 1. A control circuit for a switching converter, the switching converter comprising: an output capacitor arranged between an input line and an output line; an inductor, a switching transistor, and a detection resistor arranged in series between the output line and a ground line; and a diode having a cathode connected to the input line and an anode connected to a connection node that connects the inductor and the switching transistor, and wherein the contro…
Assignees
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Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Physics · mapped topic
- H02M3/33515Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9401649B2 cover?
- When a current detection voltage V CS that corresponds to a voltage drop across a detection resistor R CS exceeds a first threshold value V ADIM , a current limit comparator asserts a reset pulse. A zero current detection circuit generates a set pulse configured as an instruction to turn on a switching transistor. A logic circuit generates an output pulse S 14 according to the reset pulse an…
- Who is the assignee on this patent?
- Rohm Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H02M3/33515. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 26 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).