Charge Pump Voltage Regulation via Feedback Control

The patent implements a feedback control mechanism where the output voltage is continuously monitored and fed back to the regulating unit. The regulating unit adjusts the input voltage to the charge pump based on the feedback signal, ensuring that the output voltage remains stable despite variations in load current and switch-on resistance. This closed-loop feedback system resolves the contradiction by automatically compensating for voltage drops without requiring a complex pre-adjusted circuit structure.

The patent makes the input voltage dynamic rather than constant. The regulating unit continuously adjusts the input voltage to the charge pump based on real-time feedback about the output voltage and load conditions. This dynamic adjustment allows the system to adapt to varying load currents and switch-on resistances, maintaining optimal conversion efficiency without requiring a fixed complex circuit structure.

The patent combines the voltage regulation function directly into the charge pump circuit by integrating a regulating unit that is coupled to both the input and output of the charge pump. This merged structure eliminates the need for separate external voltage regulators or stabilization capacitors, as the regulating unit performs both input voltage adjustment and output voltage stabilization functions within a unified circuit architecture.

The regulating unit serves multiple functions simultaneously: it adjusts the input voltage to the charge pump, monitors the output voltage through feedback, and compensates for variations caused by load current and switch-on resistance. This multi-functional component replaces what would traditionally require multiple separate components (voltage regulator, stabilization capacitor, feedback circuitry), thereby improving output voltage stability without increasing device complexity.

The patent dynamically adjusts the input voltage to the charge pump rather than relying solely on increasing the switch rate. The regulating unit modifies the input voltage level in real-time based on feedback, which allows for finer control over the output voltage. This dynamic voltage adjustment is more efficient than increasing switch rate because it directly addresses the voltage drop issue without causing excessive voltage multiplication and subsequent efficiency loss.

The patent changes the input voltage parameter dynamically through the regulating unit rather than changing the switch rate parameter. By adjusting the input voltage level based on feedback about output voltage and load conditions, the system maintains the desired output voltage level while avoiding the efficiency penalties associated with high-frequency switching and excessive voltage multiplication.