Method and system for controlling a charge pump
AssigneeNXP B.V.
InventorsSergio Masferrer, Maurits Mario Nicolaas Storms, Jukka Riihiaho
Life of this patent
Estimating the term…
Abstract
Embodiments of a method for controlling a charge pump and a control device for a charge pump are described. In one embodiment, a method for controlling a charge pump involves monitoring a power-on status of the charge pump, calculating a duty cycle of the charge pump within a time period based on the power-on status of the charge pump, and adjusting at least one of a clock frequency setting and a capacitance setting of the charge pump in based on the duty cycle of the charge pump. Other embodiments are also described.
Claims20
A method for controlling a charge pump, the method comprising:
- monitoring a power-on status of the charge pump;
- calculating a duty cycle of the charge pump within a time period based on the power-on status of the charge pump;
- and
- adjusting at least one of a clock frequency setting and a capacitance setting of the charge pump based on the duty cycle of the charge pump.
A control device for a charge pump, the control device comprising:
- a monitor module configured to monitor a power-on status of the charge pump;
- and
- a controller module configured to calculate a duty cycle of the charge pump within a time period based on the power-on status of the charge pump and to adjust at least one of a clock frequency setting and a capacitance setting of the charge pump based on the duty cycle of the charge pump.
A method for controlling a charge pump, the method comprising:
- obtaining a plurality of intensity levels of clock frequency settings and capacitance settings of the charge pump, wherein each intensity level comprises a unique combination of a frequency of a clock signal that is used to drive the charge pump and a total pumping capacitance of the charge pump;
- calculating a duty cycle of the charge pump within a time period based on a power-on status of the charge pump;
- if the duty cycle of the charge pump is smaller than at least one minimum threshold, changing an intensity level of a clock frequency setting and a capacitance setting of the charge pump to a different intensity level in the intensity levels with a lower frequency of the clock signal that is used to drive the charge pump or a smaller total pumping capacitance of the charge pump;
- if the duty cycle of the charge pump is larger than at least one maximum threshold, changing the intensity level of the clock frequency setting and the capacitance setting of the charge pump to a different intensity level in the intensity levels with a higher frequency of the clock signal that is used to drive the charge pump or a larger total pumping capacitance of the charge pump;
- and
- if the duty cycle of the charge pump is smaller than the at least one maximum threshold and larger than the at least one minimum threshold, keeping the intensity level of the clock frequency setting and the capacitance setting of the charge pump the same.
Dependencies are inferred from the claim text.