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DC-to-DC Converter and Conversion Method in Discontinuous Conduction Mode

A DC converter, conduction technology, applied in the direction of conversion equipment without intermediate conversion to AC

Active Publication Date: 2019-03-22
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to propose a discontinuous conduction mode DC-to-DC converter and conversion method to improve current pumping capability and noise problems

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  • DC-to-DC Converter and Conversion Method in Discontinuous Conduction Mode
  • DC-to-DC Converter and Conversion Method in Discontinuous Conduction Mode
  • DC-to-DC Converter and Conversion Method in Discontinuous Conduction Mode

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Embodiment Construction

[0053]The technical terms in the following explanations refer to the customary terms in this technical field. If some terms are explained or defined in this specification, the explanations or definitions of these terms shall prevail in this specification. In addition, on the premise that implementation is possible, the meaning of the relative relationship between objects or steps described in this specification may include direct or indirect relationship. The so-called "indirect" refers to the existence of intermediate objects or physical spaces between objects. Or refers to the existence of intermediate steps or time intervals between steps. In addition, the following content is about the DC-to-DC converter and the conversion method, and the common technologies or principles in this field will not be described in detail if they do not involve the technical features of the present invention. Furthermore, the shapes, sizes, proportions, and steps of the components in the illust...

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Abstract

The invention discloses a DC-DC converter in a discontinuous conduction mode which can prevent an induction current from dropping to zero in an idle state. The DC-DC converter comprises a signal input end receiving a DC input signal, an output circuit outputting a DC output signal, an inductor for outputting an induction current in an energy storage state according to the DC input signal and outputting the induction current in an energy release state according to the DC input and output signals, a freewheel switch coupled to induction input and output ends and used to be turned on in the idle state according to an idle running control signal and to be not turned on in the energy storage state and the energy release state, a current detection circuit for detecting whether the induction current reaches a current threshold and generating a current detection signal, and a control circuit coupled to the output circuit, the freewheel switch and the current detection circuit and used to generate an idle running control signal according to the current detection signal.

Description

technical field [0001] The invention relates to a direct current to direct current converter and a conversion method, in particular to a discontinuous conduction mode direct current to direct current converter and a conversion method. Background technique [0002] DC-to-DC converters can be differentiated as boosters and bucks for power management applications. With proper design, the booster can operate in continuous conduction mode (Continuous Conduction Mode, CCM) or discontinuous conduction mode (Discontinuous Conduction Mode, DCM). The difference between the two modes lies in the waveform of the inductor current of the booster, and more To be precise, the booster in discontinuous conduction mode will operate in a no-load state where the inductor current is zero compared to the booster in continuous conduction mode. A booster in continuous conduction mode is usually used for a design with a small boost ratio (that is, the ratio of output voltage to input voltage) and a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/06
Inventor 王士伟
Owner REALTEK SEMICON CORP