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Power conversion method and power converter

A technology of power converter and output power, which is applied in the direction of output power conversion device, conversion of AC power input to DC power output, and conversion of DC power input to DC power output, etc., which can solve the problems of increased switching loss, etc.

Active Publication Date: 2017-04-26
INFINEON TECH AUSTRIA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These switching losses increase with switching frequency

Method used

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  • Power conversion method and power converter
  • Power conversion method and power converter
  • Power conversion method and power converter

Examples

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Embodiment Construction

[0024] In the detailed description below, the attached picture Make a citation. The attached picture form a part of this specification and by picture The manner shown shows specific examples in which the invention may be practiced. It is to be understood that the features of the various examples described herein may be combined with each other unless specifically stated otherwise.

[0025] figure 1 A power converter (Switch Mode Power Supply, SMPS) according to one example is shown. A power converter (which may also be referred to as a voltage converter) includes a power converter configured to receive an input voltage V IN and input current I IN input, and is configured to provide an output voltage of V OUT and output current I OUT Output. (exist figure 1 in dotted line picture shown) a load Z can be connected to the output to receive the output voltage V OUT and output current I OUT . According to one example, the power converter is configured to regulate the...

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PUM

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Abstract

A power converter and a method for operating a power converter are disclosed. In an embodiment the method for operating a power converter includes maintaining a first electronic switch switched off and an inductor demagnetized for a pause period before at least one of the plurality of drive cycles, pre-magnetizing the inductor connected in series with the first electronic switch, and discharging a parasitic capacitance of the first electronic switch using energy stored in the inductor by pre-magnetizing. The method further includes after discharging the parasitic capacitance, switching on for an on-period the first electronic switch.

Description

technical field [0001] The present disclosure relates to power converters and power conversion methods, and more particularly to operating power converters under light load conditions. Background technique [0002] Switch-mode power converters (switch-mode power supplies, SMPS) are widely used for power conversion in automotive, industrial or consumer electronics applications. A switch mode power converter includes at least one electronic switch and at least one inductor. The input power received by the power converter and thus the output power provided by the power converter can be controlled by switch mode operation of at least one electronic switch. The inductor acts as a snubber that magnetically stores energy received from the input of the power converter when the electronic switch is in the on state and forwards the stored energy to the output when the electronic switch is in the off state. [0003] The size of the inductor constitutes a significant portion of the ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156
CPCH02M3/156H02M1/0054H02M3/1588Y02B70/10H02M7/217
Inventor G·德伯伊
Owner INFINEON TECH AUSTRIA AG