Invention Grant
- Patent Title: Charge pump control circuit and method
- Patent Title (中): 电荷泵控制电路及方法
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Application No.: US11801543Application Date: 2007-05-10
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Publication No.: US07671664B1Publication Date: 2010-03-02
- Inventor: Gary Moscaluk
- Applicant: Gary Moscaluk
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporaation
- Current Assignee: Cypress Semiconductor Corporaation
- Current Assignee Address: US CA San Jose
- Main IPC: G05F1/10
- IPC: G05F1/10

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.
Information query
IPC分类: