Charge Pump Calibration for Voltage Consistency

The patent applies preliminary action by measuring and characterizing charge pump parameters (such as pump strength and clock period requirements) during the fabrication process or initial operation, before the device is fully deployed. This allows weak charge pumps to be identified and compensated for in advance through calibration data storage and subsequent operation adjustments, ensuring consistent output voltage despite fabrication variations.

The patent applies parameter changes by dynamically adjusting the clock period of the charge pump based on measured characteristics. Weak charge pumps are operated at longer clock periods (lower frequencies) rather than increasing drive strength, which achieves the required output voltage while minimizing power consumption and noise. Strong charge pumps operate at shorter clock periods, optimizing overall device performance.

The patent applies parameter changes by optimizing the clock period for each charge pump based on its measured characteristics. Instead of using a fixed high frequency for all charge pumps, the system determines the minimum required clock frequency for each unit to achieve the target voltage, thereby reducing noise and power consumption while maintaining reliable voltage regulation.

The patent applies self-service by implementing automated measurement and calibration systems that characterize charge pump parameters during fabrication or initial operation. The system automatically determines optimal clock periods and pump strength parameters for each charge pump, stores this calibration data, and uses it during normal operation. This self-calibrating approach reduces manual intervention and makes the complexity manageable while achieving consistent output voltage across all charge pumps.