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
Strongly bound carbon nanotube arrays directly grown on substrates and methods for production thereof
Termite tubing preventative for non-wood materials
Synthesized interoperable communications
Charging current control method and charging system
Efficient implementation of hash algorithm on a processor
Network-based dynamic encoding
  Randomly Featured Patents
Programmable analog keys for a control device
Turbine blade tip shroud
Method and apparatus for monitoring resin crystallization and shrinkage during polymer molding
Soil heating with a rotating electromagnetic field
Distributed system for monitoring patient video, audio and medical parameter data
Solid-state laser device
Tablet computer
Device for fixing a suture thread to a surgical needle
Holding device
Source request arbitration