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Snubber circuit, control circuit, and information processing apparatus

A technology of an information processing device and a buffer circuit is applied in the fields of control circuits, information processing devices and buffer circuits, and can solve problems such as time increase

Inactive Publication Date: 2020-07-07
NIDEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, in this case, the time required for adjustment of the snubber circuit at the time of radiation noise measurement may increase

Method used

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  • Snubber circuit, control circuit, and information processing apparatus
  • Snubber circuit, control circuit, and information processing apparatus
  • Snubber circuit, control circuit, and information processing apparatus

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Embodiment approach

[0029] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in the embodiment, a conductor for transmitting an electric signal is referred to as a transmission path and described. The transmission path may be, for example, a conductor printed on a substrate, or may be a conductive wire formed as a linear conductor or the like.

[0030]

[0031] figure 1 It is a figure for demonstrating the outline|summary of the buffer circuit 1 of embodiment. The snubber circuit 1 is connected to the target switching element. The target switching element refers to a switching element to which the snubber circuit 1 is connected. The snubber circuit 1 suppresses noise caused by a surge voltage generated when a target switching element is switched.

[0032] The target switching element is, for example, a field effect transistor. In addition, the target switching element may be another switching element instead of a field effect t...

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PUM

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Abstract

The invention provides a snubber circuit, a control circuit, and an information processing apparatus. The snubber circuit is connected to a field effect transistor, and includes a first capacitor anda first resistor which has a variable resistance value.

Description

technical field [0001] The present invention relates to a buffer circuit, a control circuit and an information processing device. Background technique [0002] Research and development are underway on techniques for reducing noise in circuits including switching elements such as converter circuits and inverter circuits. [0003] In this regard, there is known a module that includes: a switching element that switches the energized state of a target transmission path; and a snubber circuit that suppresses noise ( Refer to Patent Document 1). [0004] prior art literature [0005] patent documents [0006] Patent Document 1: Japanese Patent Laid-Open No. 2015-207739 [0007] Here, the conventional snubber circuit cannot actively change the resistance value of the resistor included in the snubber circuit. Therefore, the snubber circuit may not be able to sufficiently suppress noise due to a surge voltage generated when a switching element included in the snubber circuit is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/34H02M1/44
CPCH02M1/34H02M1/44H02M1/0038H02M1/344H02M1/348
Inventor 池田秀寿
Owner NIDEC CORP