Industry Patents
Patent: 7737643
LED Power Control Methods and Apparatus
(Click image for PDF of full patent)
| Patent Number: |
7737643 |
| Title: |
LED Power Control Methods and Apparatus |
| Abstract: |
Methods and apparatus for providing and controlling power to loads
including one or more LEDs. In one example, a controlled predetermined
power is provided to a load without requiring any feedback information
from the load (i.e., without monitoring a load voltage and/or load
current). In another example, a "feed-forward" power driver for an
LED-based light source combines the functionality of a DC-DC converter
and a light source controller, and is configured to control the intensity
of light generated by the light source based on modulating the average
power delivered to the light source in a given time period, without
monitoring and/or regulating the voltage or current provided to the light
source. In various examples, significantly streamlined circuits having
fewer components, higher overall power efficiencies, and smaller space
requirements are realized. Based on various power driver configurations,
lighting apparatus incorporating one or more power drivers for one or
more LED-based loads may be implemented, and multiple such lighting
apparatus may be coupled together to form a lighting network in which
operating power is efficiently provided throughout the network.
|
| Country of Issue: |
US |
| First Named Inventor: |
Lys |
| Assignee: |
Philips SSL |
| Continuation or Divisional of: |
7256554 |
| International Classification: |
H05B 37/02 |
| US Classification: |
315/291 |
| Issue Date: |
06-15-2010 |
| Filing Date: |
07-20-2007 |
| Application : |
11/780574 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7737643 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7737643 at Google Patents |
1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.
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