Patent ID: 9219409
Filing Date: 2015-12-22
Classification: G11C,H02M,H03K

Abstract:
1. A charge pump regulator, comprising: a charge pump circuit having a clock input terminal receiving an oscillation signal and an output terminal generating an output signal; a voltage divider receiving the output signal and generating a first divided voltage and a second divided voltage; a mode determining circuit receiving the first divided voltage and the second divided voltage, and determining whether the charge pump regulator is in a pumping mode or a detecting mode according to the first divided voltage and the second divided voltage, wherein the mode determining circuit issues a first control signal, wherein a pumping enable signal is activated when the mode determining circuit is in the pumping mode, and a detecting enable signal is activated when the mode determining circuit is in the detecting mode; a frequency divider receiving the detecting enable signal and the first control signal, wherein when the detecting enable signal is activated, the frequency divider generates a detecting signal according to the first control signal, wherein a frequency of the first control signal is a multiple of a frequency of the detecting signal; and a selecting circuit receiving the detecting signal, a clock signal and the pumping enable signal, wherein when the pumping enable signal is activated, the clock signal is converted into the oscillation signal by the selecting circuit, wherein when the pumping enable signal is inactivated, the detecting signal is converted into the oscillation signal by the selecting circuit.