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
Alterable account number
Quantifying the risks of applications for mobile devices
Demand based power allocation
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Cooling structure for electronic device
Dynamic load profiling in a power network
Knee guard
  Randomly Featured Patents
Vitamin tablet
Electronic torque spanner
Stable blood coagulation inhibitor-free factor vii preparation and method for preparing same
Battery connection topology
Large surface cathode arrangement of uniform consumption
Fireplace door
Fluorescent lamp
Golf ball with water immersion indicator
Apparatus for detecting small bubbles in a pressurized fluid stream
Apparatus for removing snow from motor vehicle roofs