Resources Contact Us Home
Multiple output charge pump

Image Number 11 for United States Patent #6636104.

A single mode buck/boost charge pump has multiple outputs and is adapted to power a plurality of separate loads, such as light emitting diodes, in a highly efficient manner. The multiple outputs have different voltages. The output current or voltage of at least one of the multiple outputs is regulated by a feedback circuit. The feedback circuit provides a control signal based on a comparison of a reference voltage with a feedback voltage. The feedback voltage is proportional to an output voltage when the charge pump is configured to regulate the output voltage. Alternately, the feedback voltage is a sense voltage across a sense resistor connected in series with a load when the charge pump is configured to regulate output current provided to the load.

  Recently Added Patents
Method for measuring and improving organization effectiveness
MiR 204, miR 211, their anti-miRs, and therapeutic uses of same
Liquid crystal display
Watch dial
Lighting fixture
Signal processing and tiered signal encoding
Onium salt-containing polymer
  Randomly Featured Patents
Detection of defects by thermographic analysis
Image reading apparatus for reading images formed by a light transmission
Animal feeder
Automatic call distribution system
Wire cut electrical discharge machining apparatus
Method and apparatus for improving planarity of chemical-mechanical planarization operations
Construction and gaming cubes
X-ray image detection apparatus
Baby and toddler sunglasses
Case for a smart phone