Raydium Semiconductor Corporation

Dazzo Technology Corporation

Li-Chieh Chen

Chih-Jen Hung

Pei-Kai Tseng

Hsuan-Hao Chien

A charge pump circuit includes a first switch&#x2dc;a fourth switch, a capacitor, a current source, a first resistor, a second resistor, an amplifier, another current source, a current mirror, a skip detection circuit, a switch generation circuit and a control unit. A method includes: (a) starting the charge pump circuit; (b) operating the charge pump circuit in a first phase, wherein the first switch and second switch are conducted and the third switch and fourth switch are disconnected; (c) operating the charge pump circuit in a second phase, wherein the third switch and fourth switch are conducted and the first switch and second switch are disconnected; (d) determining whether a detected voltage in the skip detection circuit is higher than a threshold voltage; and (e) selectively performing step (b) or (c) again according to determination result of step (d).

Charge pump circuit and operating method thereof

A charge pump and operating method thereof are disclosed. The charge pump includes a first capacitor to a third capacitor and a first switch to a tenth switch. The charge pump is used to receive an input voltage and provide an output voltage to a load capacitor. When the charge pump is operated in a first mode, the charge pump controls the second capacitor failure, the output voltage and the input voltage have opposite electricity and the output voltage is (&#x2212;&#xbd;) times the input voltage. When the charge pump is operated in a second mode, the charge pump controls the second capacitor failure, the output voltage and the input voltage have opposite electricity and the output voltage is (&#x2212;&#x2154;) times the input voltage.

Growing community of inventors

Taipei, Taiwan

Li-Chieh Chen