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
Display screen with transitional icon
Methods and system for displaying segmented images
Systems and methods for a signed magnitude adder in one's complement logic
Method and device for peer arrangement in single substream upload P2P overlay networks
Para-xylylene based microfilm elution devices
Probe for ultrasound diagnostic apparatus
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
  Randomly Featured Patents
Isolating ions in quadrupole ion traps for mass spectrometry
Ultrasound biopsy probe
Triazole derivatives as modulators of dopamine D3 receptors
Transparent sheet material
Support for vertically oriented capacitors during the formation of a semiconductor device
Gypsum wallboard and method of making same
Semiconductor device having a mesa structure for surface voltage breakdown
Scanning optical system
Foreign matter filter for fuel assembly in pressurized water reactor
Cooled secondary coils of electric automobile charging transformer