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
Probe for ultrasound diagnostic apparatus
Sericin cationic nanoparticles for application in products for hair and dyed hair
Nuclear fission reactor, a vented nuclear fission fuel module, methods therefor and a vented nuclear fission fuel module system
Semiconductor device
Interface circuit and interface system
Method for fabrication of a semiconductor device and structure
  Randomly Featured Patents
Nuclear steam generator sludge lance method and apparatus
Solar powered cooling apparatus for a vehicle brake system
System for creating linear lesions for the treatment of atrial fibrillation
Automatic brake shoe measuring apparatus for rolling stock
System for allocating the memory area of second data which value need not be preserved to another data of some of the processes
Ultrasonic surgical instrument
Electronic ballast with multimode lamp power control
Proportionally displaced coupled walking beams
Resonant nonlinear ultrasound spectroscopy
Nanoparticles and method for making the same