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Electronic board for a voltage converter

A voltage, circuit board technology, applied in the field of manufacturing voltage converters, can solve problems such as damage to circuit board components

Pending Publication Date: 2022-05-10
VALEO SYST DE CONTROLE MOTEUR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to these harmonics, the presence of parasitic inductance in the connection between the decoupling capacitors can create current resonances which can damage components of the board

Method used

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  • Electronic board for a voltage converter
  • Electronic board for a voltage converter
  • Electronic board for a voltage converter

Examples

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Embodiment Construction

[0065] figure 1 The circuit carried by the circuit board 1 according to an exemplary embodiment of the present invention is shown. The circuit board 1 in this case forms part of a voltage converter, which in the example considered is a DC / DC voltage converter. For example, it is a 12V / 48V voltage converter, but the invention is not limited to such an example. In this case, the circuit board 1 is a printed circuit board.

[0066] In known manner, the voltage converter in this case comprises a first DC voltage input 4, a second DC voltage input 5 and a plurality of switching arms 6, so that the The voltage value is converted into another voltage value available at the second DC voltage input 5 and vice versa. The number of switching arms 6 is greater than or equal to three, in this case exactly equal to three.

[0067] In the example considered, each switching arm 6 comprises two controllable electronic switches 10 connected in series and defining a midpoint between them con...

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PUM

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Abstract

The invention relates to a circuit board (1) defining a plurality of switching arms (6) connected in parallel in order to convert a first voltage into a second voltage, at least one of the voltages being a DC voltage, comprising:-a plurality of controllable electronic switches (10) mounted in series in pairs on either side of a midpoint in order to produce switching arms connected in parallel,-a plurality of decoupling capacitors (11, 12) mounted in series in pairs on either side of the midpoint, the capacitors (11) are connected in parallel to each other and to the DC voltage, and two electrically conductive layers (16, 17, 18), in particular parallel to each other, one of the electrically conductive layers (16) being electrically at the highest potential of the DC voltage and the other of the electrically conductive layers (18) being at the lowest potential of the DC voltage, each decoupling capacitor (11, 12) having one terminal connected to one of the conductive layers (16) and the other terminal connected to the other of the conductive layers (18), the electronic switch (10) being arranged on the circuit board such that the pattern connecting all midpoints of the switch arms (6) defines a first polygon (P1) having a number of sides greater than or equal to 3, and each of the two electrically conductive layers (16, 17, 18) extends at least on a surface superimposed on the first polygon (P1).

Description

technical field [0001] The invention relates to a circuit board defining a plurality of switching arms, in particular for the manufacture of voltage converters. The voltage converter is, for example, a DC / DC voltage converter or an inverter / rectifier. Background technique [0002] Such switching arms are usually transistors. New transistor technologies based on gallium nitride (GaN) or silicon carbide (SiC) achieve higher performance than previous technologies in terms of switching speed, which allows operation at higher chopping frequencies. [0003] The switching arm is arranged to convert the DC voltage into another voltage, which may or may not be a DC voltage. A decoupling capacitor is connected in parallel with this DC voltage, which generates high frequency harmonics due to the aforementioned chopping frequency. Due to these harmonics, the presence of parasitic inductance in the connections between the decoupling capacitors can create current resonances that can da...

Claims

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Application Information

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IPC IPC(8): H05K7/14H02M3/158H02M1/00
CPCH05K7/1432H02M3/1584H02M1/00H05K7/14329H02M3/003H02M7/003
Inventor N.阿拉利E.塔伦
Owner VALEO SYST DE CONTROLE MOTEUR
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