Methods and systems for an automated design, fulfillment, deployment and operation platform for lighting installations
US-12135922-B2 · Nov 5, 2024 · US
Transformer-isolated LED lighting circuit with secondary-side dimming control
US8947016B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8947016-B2 |
| Application number | US-201213537301-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 29, 2012 |
| Priority date | Jul 30, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A transformer isolated LED lighting circuit supplies current from a secondary-side storage capacitor to one or more LED strings in conformity with one or more dimming values. The dimming values are communicated through the transformer by patterns or codes provided in pulses of a power converter circuit that charges the storage capacitor from the primary side of the transformer, or alternatively by a special modulated signal provided in addition to the switching pulses.
First claim
Opening claim text (preview).
What is claimed is: 1. An integrated circuit for supplying current to one or more light-emitting diodes (LEDs), comprising: an input circuit for coupling to a secondary winding of an external transformer that isolates the integrated circuit and the LEDs from a primary-side circuit that provides pulses through the transformer for supplying energy to the LEDs; a decoder coupled to the input circuit for decoding a dimming value encoded in a voltage waveform provided across the seco…
Assignees
Inventors
Classifications
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
- H05B45/10Primary
Electricity · mapped topic
- H05B33/0815Primary
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8947016B2 cover?
- A transformer isolated LED lighting circuit supplies current from a secondary-side storage capacitor to one or more LED strings in conformity with one or more dimming values. The dimming values are communicated through the transformer by patterns or codes provided in pulses of a power converter circuit that charges the storage capacitor from the primary side of the transformer, or alternatively…
- Who is the assignee on this patent?
- Melanson John L, King Eric, Cirrus Logic Inc
- What technology area does this patent fall under?
- Primary CPC classification H05B45/10. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 03 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).