Airoha Technology Corporation

Jui-Hung Wei

Han-Chi Chiu

Heng-Chih Lin

Chien-Kuang Lee

John-San Yang

Sheng-Fu Yu

En-Yang Lin

Ke-Deng Huang

A feedback control circuit of a pulse-frequency modulation (PFM) converter includes an on-time timer circuit and a detection circuit. The on-time timer circuit generates an on-time control signal for controlling an on-time duration of a switch circuit included in a power stage circuit of the PFM converter. The detection circuit controls the on-time timer circuit to adaptively adjust the on-time control signal according to a pulse interval between two successive inductor current pulses of the PFM converter.

Feedback control circuit of pulse-frequency modulation converter that adaptively adjusts on-time control signal and associated feedback control method

A feedback control circuit of a pulse-frequency modulation (PFM) converter includes a multiplexer circuit and a detection circuit. The multiplexer circuit is arranged to receive a plurality of candidate peak current values, and output one of the plurality of candidate peak current values as a target peak current value according to a selection control signal, wherein a peak current value of an inductor current pulse of the PFM converter is subject to the target peak current value. The detection circuit is arranged to adaptively adjust the selection control signal according to a pulse interval between two successive inductor current pulses of the PFM converter.

Feedback control circuit of pulse-frequency modulation converter that adaptively adjusts peak inductor current value according to pulse interval and associated feedback control method

The present invention relates to a control method of an RF switch module. The RF switch module comprises a control device and a switch device. The control device is electrically connected to the switch device, and the control device is able to provide a control voltage to the switch device, and turn on or turn off the switch device. Further, the control device determines frequency or voltage value of the control voltage provided to the switch device according to the power or frequency of an RF signal transmitted by the switch device.

Control method of RF switch module

Growing community of inventors

Hsinchu, Taiwan

Jui-Hung Wei