公开(公告)号：US20240162814A1

公开(公告)日：2024-05-16

申请号：US18089580

申请日：2022-12-28

Applicant: RichWave Technology Corp.

Inventor： Hsien-Huang Tsai ,  Chih-Sheng Chen ,  Tien-Yun Peng

IPC: H02M3/07

CPC classification number: H02M3/071

Abstract: A switch device includes a driver circuit, a switch circuit and a level transition circuit. The driver circuit includes an input terminal for receiving an input signal, an output terminal for outputting an output signal, a first terminal coupled to a first reference terminal, and a second terminal coupled to a second reference terminal. The switch circuit includes a control terminal for receiving the output signal. The level transition circuit includes a first terminal for receiving the output signal, a second terminal coupled to a third reference terminal, and a third terminal for receiving the input signal. In a transition interval, the input signal is transitioned from a first input signal level to a second input signal level, the level transition circuit transitions the output signal from a first output signal level to a third output signal level between the first output signal level and a second output signal level.

公开(公告)号：US11609249B2

公开(公告)日：2023-03-21

申请号：US17138785

申请日：2020-12-30

Applicant: RichWave Technology Corp.

Inventor： Tien-Yun Peng ,  Hsien-Huang Tsai ,  Chih-Sheng Chen

IPC: G01R19/00 ,  H03K19/20

Abstract: A voltage state detector includes an input terminal, a voltage drop circuit, a pull-down circuit, a load circuit, a transistor, a pull-up circuit, a first output terminal, and a second output terminal. The voltage drop circuit is coupled to the input terminal. The pull-down circuit is coupled to the voltage drop circuit and a first reference terminal. The load circuit is coupled to a second reference terminal. The transistor has a first terminal coupled to the load circuit, a second terminal coupled to the first reference terminal, and a control terminal coupled to the voltage drop circuit. The pull-up circuit is coupled to the second reference terminal and the voltage drop circuit. The first output terminal is coupled to the first terminal of the transistor for outputting a first state determination signal. The second output terminal is coupled to the voltage drop circuit for outputting a second state determination signal.

公开(公告)号：US11258445B2

公开(公告)日：2022-02-22

申请号：US17010838

申请日：2020-09-03

Applicant: RichWave Technology Corp.

Inventor： Hsien-Huang Tsai ,  Chih-Sheng Chen

IPC: H03K17/687 ,  H03K17/10 ,  H03K19/0185 ,  G05F1/62 ,  H03K17/06 ,  G05F1/585 ,  G05F1/66

Abstract: A radio frequency apparatus and a voltage generating device thereof are provided. The voltage generating device includes a first switch and a second switch. A first terminal of the first switch receives a first voltage. A control terminal of the first switch receives a second voltage. A first terminal of the second switch receives the second voltage. A control terminal of the second switch receives the first voltage. A second terminal of the second switch and a second terminal of the first switch are coupled to an output node, wherein the output node outputs an output voltage related to at least one of the first voltage and the second voltage.

公开(公告)号：US20210119651A1

公开(公告)日：2021-04-22

申请号：US16997955

申请日：2020-08-20

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Hsien-Huang Tsai

IPC: H04B1/04 ,  H03F3/195 ,  H03F3/24

Abstract: A radio frequency device and a voltage generating device thereof are provided. The voltage generating device includes a first transistor, a second transistor, and a voltage dividing circuit. A first terminal of the first transistor receives a first voltage. A first terminal of the second transistor receives a second voltage. A first connection terminal and a second connection terminal of the voltage dividing circuit are respectively coupled to second terminals of the first transistor and the second transistor. The voltage dividing circuit generates a first divided voltage and a second divided voltage. The first divided voltage is used as an output voltage of the voltage generating device. The second divided voltage is output as a control voltage to a control terminal of the first transistor and a control terminal of the second transistor.

公开(公告)号：US20190199220A1

公开(公告)日：2019-06-27

申请号：US16290975

申请日：2019-03-04

Applicant: RichWave Technology Corp.

Inventor： Chih-Sheng Chen ,  Tien-Yun Peng ,  Hsien-Huang Tsai

IPC: H02M3/24 ,  H02M1/36 ,  H02M3/07 ,  H02M7/10

Abstract: A voltage generator includes an oscillator, a charge pump, a smoothing capacitor, and a driving controller. The oscillator has an output. The charge pump has an input and an output, and the input of the charge pump is coupled to the output of the oscillator. The smoothing capacitor is coupled to the output of the charge pump. The driving controller is coupled to the oscillator, and generates an enable signal to adjust an operation frequency of the oscillator. The voltage generator supplies a driving voltage to a switch for driving the switch via the smoothing capacitor. The driving controller generates the enable signal according to the driving voltage.