Signal transmission circuitry and snubber circuitry

Patent metadata

Field	Value
Publication number	US-12328116-B2
Application number	US-202318237835-A
Country	US
Kind code	B2
Filing date	Aug 24, 2023
Priority date	Mar 24, 2023
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A signal transmission circuitry is a circuitry that transmits a signal from a first system on a transmission side to a second system on a reception side. The first system includes an inductor, a first current source controlled by a first switch, a second current source connected in series with the first current source via the inductor and controlled by a second switch, a third switch connected in parallel with the first current source and controlling connection with a ground point, and a fourth switch connected in parallel with the second current source and controlling connection with the ground point.

First claim

The invention claimed is:

1. A signal transmission circuitry that is a circuitry that transmits a signal from a first system on a transmission side to a second system on a reception side, wherein
the first system includes:
an inductor;
a first current source controlled by a first switch;
a second current source connected in series with the first current source via the inductor and controlled by a second switch;
a third switch that is connected in parallel with the first current source and controls connection with a ground point; and
a fourth switch that is connected in parallel with the second current source and controls connection with the ground point.

2. The signal transmission circuitry according to claim 1 , wherein
the first switch and the third switch are turned on and off in synchronization with each other,
the second switch and the fourth switch are turned on and off in synchronization with each other, and
the first switch and the second switch are not turned on at the same timing.

3. The signal transmission circuitry according to claim 1 , wherein
the first system further includes:
a first filter circuit connected in parallel with the third switch between one end of the inductor and the ground point; and
a second filter circuit connected in parallel with the fourth switch between the other end of the inductor and the ground point.

4. The signal transmission circuitry according to claim 3 , wherein
the first filter circuit includes a first resistor and a first capacitor connected in series, and
the second filter circuit includes a second resistor and a second capacitor connected in series.

5. The signal transmission circuitry according to claim 1 , wherein
the first system further includes:
a third filter circuit partially connected in series with the third switch and partially connected in parallel with the third switch between one end of the inductor and the ground point; and
a fourth filter circuit partially connected in series with the fourth switch and partially connected in parallel with the fourth switch between the other end of the inductor and the ground point.

6. The signal transmission circuitry according to claim 5 , wherein
the third filter includes:
a third resistor connected in series with the third switch; and
a third capacitor connected in parallel with the third switch and connected in series with the third resistor, and

the fourth filter includes:
a fourth resistor connected in series with the fourth switch; and
a fourth capacitor connected in parallel with the fourth switch and connected in series with the fourth resistor.

7. A snubber circuitry that is a circuitry for controlling a current flowing through an inductor, the snubber circuitry comprising:
a first current source controlled by a first switch;
a second current source connected in series with the first current source via the inductor and controlled by a second switch;
a third switch that is connected in parallel with the first current source and controls connection with a ground point; and
a fourth switch that is connected in parallel with the second current source and controls connection with the ground point.

Assignees

• Toshiba Kk
• Toshiba Electronic Devices & Storage Corp

Inventors

• Dang Bowen
• Arai Makoto
• Ootaka Shoji
• Murasaki Takeshi
• Kitahara Takaya

Classifications

• H02M1/34

  Snubber circuits · CPC title

• H04B1/04

  Circuits · CPC title

• H03K17/691 Primary

  using transformer coupling · CPC title

• H04B1/0475 Primary

  with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title