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
Determination and presentation of package pricing offers in response to customer interest in a product
Scalable packet processing systems and methods
Method for automatically estimating inertia in a mechanical system
Provision of downlink packet access services to user equipment in spread spectrum communication network
Plants and seeds of corn variety CV577261
Inhibition of HRP-3 using modified oligonucleotides
Bias voltage generating circuit and switching power supply thereof
  Randomly Featured Patents
Expansion of tobacco
Chest-mounted paint carrier
Turbine ring assembly for gas turbine
Threshold setting apparatus for adjustably setting a threshold for use in identifying serial data from a baseband signal
Optical device
Plug and play I2C slave
Two-way flow control valve
View-box container
Modular electrical connector box
Cylindrical vanity case