CHARGE PUMP REGULATION

摘要

A regulated charge pump circuit and method of operation are described. A charge pump is configured to supply an output voltage to a load, and includes at least one charge pump stage, a charge pump driver arranged to drive the charge pump stages and a controllable current source connected between a supply voltage and the charge pump driver. An analog regulation loop includes a measurement circuit arranged to output an analog regulation signal indicative of a difference between a current value of the output voltage and a target value of the output voltage. A signal path is connected to the charge pump to supply the analog regulation signal to the controllable current source to operate the controllable current source to modulate the supply voltage that can be provided to the charge pump driver to regulate the output voltage.

主权项

1. A regulated charge pump circuit, comprising:
a charge pump configured to supply an output voltage to a load, the charge pump including at least one charge pump stage, a charge pump driver arranged to drive the at least one charge pump stage and a controllable current source connected between a supply voltage and the charge pump driver; and an analog regulation loop including a measurement circuit arranged to output an analog regulation signal indicative of a difference between a current value of the output voltage and a target value of the output voltage and a signal path connected to the charge pump to supply the analog regulation signal to the controllable current source and wherein the analog regulation signal operates the controllable current source to modulate the electrical power that the supply voltage can provide to the charge pump driver to regulate the output voltage.