CHARGE PUMP APPARATUS

摘要

The invention provides a charge pump apparatus including a clock signal generator, a clock freezing circuit, a charge pump circuit, and a feedback circuit. The clock signal generator generates a clock signal. The clock freezing circuit directly receives the clock signal and an enable signal. The clock freezing circuit decides whether to pass or latch a voltage level of the clock signal according to the enable signal to generate a controlled clock signal. The charge pump circuit directly receives the controlled clock signal and operates a charge pump operation on an input voltage to generate a pumping voltage.

主权项

1. A charge pump apparatus, comprising:
a clock signal generator, generating a clock signal; a clock freezing circuit, coupled to the clock signal generator, directly receiving the clock signal and an enable signal, and deciding whether to pass a voltage level of the clock signal or not according to the enable signal for generating a controlled clock signal; a charge pump circuit, coupled to the clock freezing circuit, directly receiving the controlled clock signal and operating a charge pump operation on an input voltage to generate a pumping voltage; and a feedback circuit, coupled to the charge pump circuit and the clock freezing circuit, wherein the feedback circuit compares the pumping voltage and a preset target voltage to generate the enable signal.