Patents Assigned to Cypress Semiconductor Corporaation
  • Patent number: 7671664
    Abstract: A charge pump control circuit that four main parts: a clock control circuit; a clock switch and driver circuit; a pump stage; and a dynamic load control circuit. The clock control circuit has a dynamic load that is controlled by the dynamic load control circuit. When the charge pump control circuit is enabled, the dynamic capacitive load is applied which incorporates a delay allowing the high frequency clock to control the pump stage and quickly charge the output to the desired boosted voltage. This provides a very fast boosted output voltage during a startup condition. Once the desired output voltage is realized, the dynamic capacitive load is disabled and the low frequency clock takes over the operation. During each low frequency clock cycle, the high frequency clock is enabled for several cycles per cycle of the low frequency clock.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: March 2, 2010
    Assignee: Cypress Semiconductor Corporaation
    Inventor: Gary Moscaluk