Switch driver powering circuit

Patent metadata

Field	Value
Publication number	US-2020161963-A1
Application number	US-201916688862-A
Country	US
Kind code	A1
Filing date	Nov 19, 2019
Priority date	Nov 20, 2018
Publication date	May 21, 2020
Grant date	—

Abstract

An assembly for powering a first circuit, including at least one ferrite bead in series with a diode between a first terminal of application of a first voltage and a first terminal of said first circuit.

First claim

What is claimed is:

1 . An assembly for powering a first circuit, comprising at least one ferrite bead in series with a diode between a first terminal of application of a first voltage and a first terminal of said first circuit.

2 . The assembly of claim 1 , wherein the ferrite bead ensures a filtering function at frequencies greater than 10 MHz, preferably greater than 100 MHz.

3 . The assembly of claim 1 , wherein at least one capacitor couples said first terminal of the first circuit to a second terminal of the first circuit.

4 . The assembly of claim 1 , wherein the first voltage is delivered by a voltage source.

5 . The assembly of claim 1 , forming a bootstrap assembly.

6 . The assembly of claim 1 , further comprising a resistor in series with the ferrite bead and the diode.

7 . A circuit for delivering power supply voltages to a first circuit and to a second circuit, comprising:
a source of a voltage for powering the second circuit; at least one assembly of claim 1 for powering the first circuit.

8 . The circuit of claim 7 , wherein a second terminal of the voltage source is coupled, preferably connected, to a second terminal of the second circuit.

9 . The circuit of claim 8 , wherein the first circuit and the second circuit are respective drivers of a first switch and of a second switch in series, the second respective terminals of the first circuit and of the second circuit being coupled, preferably connected, to respective conduction terminals of the first switch and of the second switch.

10 . The circuit of claim 9 , wherein said ferrite bead is selected to have a resonance frequency of the same order of magnitude as the switching frequency of the first and second switches.

11 . The circuit of claim 7 , wherein the switches are voltage-controlled switches.

12 . The circuit of claim 11 , wherein the switches are N-channel MOS transistors assembled with a common source.

13 . A switch comprising:
a first switch and a second switch in series between a first terminal and a second terminal; a first driver of the first switch and a second driver of the second switch; at least one first source of a voltage for powering the second driver; and at least a first assembly of claim 1 .

14 . The switch of claim 13 , further comprising:
a second voltage source in series with the first voltage source, the second driver being powered by the two voltage sources in series; and a second assembly for powering a first circuit, between a terminal of the second voltage source and a terminal of the first driver, the second assembly having a least one ferrite bead in series with a diode between a first terminal of application of a first voltage and a first terminal of said first circuit.

15 . A current inverter comprising six switches of claim 13 , series-coupled in pairs of switches, the pairs of switches being in parallel between two input terminals of the inverter.

16 . A voltage inverter comprising switches of claim 13 .

Assignees

• Commissariat Energie Atomique

Inventors

• Lefevre Guillaume

Classifications

• H03K17/063 Primary

  in field-effect transistor switches · CPC title

• H02M1/088

  for the simultaneous control of series or parallel connected semiconductor devices · CPC title

• H03K17/6874

  in a symmetrical configuration · CPC title

• H02M7/5387

  in a bridge configuration · CPC title

• H02M2001/0006

  Electricity · mapped topic