High-frequency DC-DC convertor and resonant drive circuit thereof

A DC-DC and converter technology, applied in the field of switching power supply, can solve the problems of high on-state voltage drop and large rectification loss, and achieve the effect of reducing conduction loss and improving power density

Inactive Publication Date: 2015-12-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional rectifier circuit uses a power diode, because the on-state voltage drop of the...

Method used

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  • High-frequency DC-DC convertor and resonant drive circuit thereof
  • High-frequency DC-DC convertor and resonant drive circuit thereof
  • High-frequency DC-DC convertor and resonant drive circuit thereof

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Embodiment Construction

[0041] Embodiments of the present invention will be described in detail below, and the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, rather than to limit the present invention.

[0042] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or combinations thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or interveni...

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Abstract

The invention discloses a high-frequency DC-DC convertor and a resonant drive circuit thereof, and belongs to the technical field of power electronic devices, especially switch power sources. The convertor comprises an inversion module, an impedance matching module and a rectifier module which are sequentially connected; the inversion module comprises inductors and capacitors of which resonance occurs at the two-time switch frequency and other inductors and capacitors which all participate in resonance, a second harmonic trap is formed, switch pipe ZVS is achieved, and the switch pipe stress is reduced. The drive circuit comprises a phase-shift network, a phase inverter parallel drive stage and a resonance drive module; a synchronous rectification technology is achieved through RC phase-shift resonance drive, the conduction loss is reduced, and the drive circuit is suitable for a low-voltage output occasion.

Description

technical field [0001] The invention discloses a high-frequency DC-DC converter and a resonant driving circuit thereof, belonging to the technical field of power electronic devices, especially switching power supplies. Background technique [0002] The working frequency of the traditional PWMDC-DC converter is generally below MHz, and its volume, weight and dynamic response are all limited. To dramatically increase power density, integration, dynamic performance, and reliability, the industry is continually pushing for a dramatic increase in operating frequency. The increase in switching frequency directly reduces the energy storage requirements for power conversion devices, improves the transient response speed, and theoretically realizes the miniaturization and integration of passive components (capacitors and magnetic components), improving power density. At the same time, the introduction of new semiconductor devices and the continuous development of new magnetic materi...

Claims

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Application Information

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IPC IPC(8): H02M3/338
Inventor 金科王晶晶
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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