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Resonant driving circuit

A drive circuit and resonance technology, applied in the field of resonant drive circuits, can solve the problems of high proportion of drive loss and low drive circuit, achieve low drive loss, realize recycling, and achieve the effect of single drive current waveform spectrum

Pending Publication Date: 2019-04-19
TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the switching frequency is low, the losses of the above two types of driving circuits account for a low proportion of the total loss of the converter. When the switching frequency increases to hundreds of kHz and MHz, the proportion of the driving loss is very high. Has become a key factor restricting the further improvement of converter power density

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Embodiment Construction

[0015] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples cited are only used to explain the present invention and are not used to limit the scope of the present invention.

[0016] Such as figure 1 Shown is a schematic diagram of a structural framework provided by an embodiment of a resonant drive circuit of the present invention. The circuit includes: a transformer T, a primary side circuit 1, a secondary side circuit 2, a first PWM input terminal 3, and a second PWM input terminal 4 , The primary circuit 1 includes: a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, a first NMOS transistor Q3, a second NMOS transistor Q4, a first PMOS tube Q1 and second PMOS tube Q2, where:

[0017] The first PWM input terminal 3 is respectively connected to the g terminal of the first PMOS transistor Q1 and the g terminal of the first NMOS transistor Q3. The s...

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Abstract

The invention discloses a resonant driving circuit, which relates to the field of power conversion. The resonant driving circuit a transformer, a primary side circuit, a secondary side circuit, a first PWM input end and a second PWM input end, wherein the primary side circuit comprises a first capacitor, a second capacitor, a third capacitor, a first diode, a first a diode, a first NMOS transistor, a second NMOS transistor, a first PMOS transistor, and a second PMOS transistor. The resonant driving circuit provided by the invention realizes cyclic utilization of driving energy, has the advantages of low driving loss, single spectrum of driving current waveforms and convenience for electromagnetic compatibility design, and is suitable for a MHz-level switching converter.

Description

Technical field [0001] The invention relates to the field of power conversion, in particular to a resonance drive circuit. Background technique [0002] With the advancement of device technology, field-controlled devices have been widely used in the field of power conversion. Correspondingly, a wide variety of drive circuits with voltage source properties have appeared. [0003] However, when the switching frequency is low, the losses of the above two types of drive circuits account for a relatively low proportion of the total loss of the converter. When the switching frequency is increased to hundreds of kHz and MHz or more, the drive loss accounts for a high proportion. It has become a key factor restricting the further increase of converter power density. Summary of the invention [0004] The technical problem to be solved by the present invention is to provide a resonance driving circuit in view of the shortcomings of the prior art. [0005] The technical solutions of the presen...

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Application Information

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IPC IPC(8): H02M1/08
CPCH02M1/08H02M1/0048Y02B70/10
Inventor 张保冰
Owner TECH & ENG CENT FOR SPACE UTILIZATION CHINESE ACAD OF SCI