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 specifying control curve parameters for controlling climatic environmental conditions of climate-controlled enclosed spaces
Battery power management system and method
Bird deterrent
Communication terminal device, communication system, and communication control method
Audio signal clip detection
Video surveillance system employing video primitives
Data-conditioned encryption method
  Randomly Featured Patents
Recipient block and method for preparation thereof
Hydraulic distributor for assistance power motor with return to rest position
Shake and pour end closure with stay open lid
High dielectric ceramic composition for computer module
Heat-developable photographic materials
Calibration of temperature sensing circuitry in an electronic device
Wind suppression/replacement component for use with electronic systems
Micro-operation un-lamination
Faucet handle
Soybean variety XB28B10