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Electronic resonant and isolated half-bridge zeta converters

A converter, electronic technology, applied in the direction of high-efficiency power electronic conversion, output power conversion devices, instruments, etc., can solve the problem of high leakage inductance of transformers

Active Publication Date: 2018-03-16
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, as described in "C.Selection of power switches and diode", the switches must have low capacitance, because otherwise zero-voltage switching of the switches may suffer losses, or the leakage inductance of the transformer should be high

Method used

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  • Electronic resonant and isolated half-bridge zeta converters
  • Electronic resonant and isolated half-bridge zeta converters
  • Electronic resonant and isolated half-bridge zeta converters

Examples

Experimental program
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Embodiment Construction

[0067] In the following description, numerous specific details are given to provide a thorough understanding of the embodiments. Embodiments can be practiced without one or more of the specific details, or with other methods, elements, materials, or the like. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the embodiments.

[0068] Throughout this specification, reference to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

[0069] Headings provided herein a...

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Abstract

An electronic half-bridge ZETA converter comprising: a transformer (T), wherein a half-bridge (S1, S2) is connected to the primary winding (T1) of the transformer (T), and capacitors (CA1, CA2) and diodes (DA1, DA2) is associated with the half-bridge switches (S1, S2). The ZETA converter is connected to the secondary winding (T2) of the transformer (T), the converter comprises a first inductance comprising the leakage inductance (LM) and the second inductance (L0) of the transformer (T). The converter includes a control unit (112) that drives the half-bridge switches. During a fourth time interval of the switching cycle, the first switch (S1) and the second switch (S2) are opened, so that the capacitor (CA2) associated with the second switch (S2) charges and is connected to The capacitor (CA1) associated with the first switch (S1) is discharged, thereby achieving zero voltage switching.

Description

technical field [0001] The present disclosure relates to electronic converters. [0002] The present disclosure was designed with a particular focus on improving the driving of half-bridge ZETA converters. Background technique [0003] An electronic converter comprising a light source such as at least one LED (Light Emitting Diode) or other solid state lighting device may supply a DC output. For example, such a current can be constant or also varied over time in order to set the brightness of the light emitted by the light source (so-called dimming function). [0004] figure 1 A possible lighting system is shown, comprising an electronic converter 10 and a lighting module 20 (comprising eg at least one LED L). [0005] For example, figure 2 An example of a lighting module 20 comprising, for example, a chain of LEDs (ie, a plurality of LEDs connected in series) is shown. For example, in figure 2 , shows four LEDs L 1 , L 2 , L 3 and L 4 . [0006] The electronic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H02M3/337H05B44/00
CPCH02M3/3376H05B45/382Y02B20/30Y02B70/10H05B45/39H02M1/0058H02M1/0009H02M1/08H02M1/4241H02M3/33546
Inventor 达尼埃莱·卢卡托
Owner OSRAM GMBH
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