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
Crystalline form of zofenopril calcium
Channel marking for chip mark overflow and calibration errors
Pyridazine compounds for controlling invertebrate pests
Financial transaction cards
Polymer composites having highly dispersed carbon nanotubes
Attribute information providing system
Electrode and method for manufacturing the same
  Randomly Featured Patents
Benzoheterocyclic compounds
Method and device for producing a hollow body from solid round steel
Resin bonded grinding wheels with fillers
Flexible baseball cover with opening for the sweet spot
Electrical connector assembly having a force actuated releasing arrangement
Inductive coupler characteristic shape
Energy-efficient full-color liquid crystal display
Egg handling system
Wireless input apparatus
Apparatus and method for transmitting signal for elevator